ACTIVE 97 Budapest, Hungary 1997 August 21-23 INTER-NOISE 97 Budapest, Hungary 1997 August 25-27

Invitation to the

Dear friends,

On behalf of the Board of Directors of International INCE, the sponsoring institutions: the European Acoustic Association, the Hungarian Academy of Sciences and various Hungarian governmental bodies, the Scientific Society for Optics, Acoustics, Motion Pictures and Theatre Technology as the hosting society, as well as all members of the organizing committees of

ACTIVE 97 and INTER-NOISE 97, we are delighted to extend you our warmest invitation to join the 26th INTER NOISE Congress and in the new series of meetings on active control which began in Blacksburg, Virginia, USA and Tokyo, Japan, and became ACTIVE 95 in New Port Beach, California, USA in 1995.

On the basis of the number and quality of abstracts submitted – more than 490 from 48 countries for INTER-NOISE 97 and more than 120 from 29 countries for ACTIVE 97 – the technical programs of the two conferences promise to contain valuable engineering and scientific information.

Although the number of papers to be presented point to rather intensive working days, all efforts are being made to ensure that delegates have opportunities to enjoy the social program that is being arranged.

Budapest is a city with an interesting history, a unique atmosphere, and an exciting future. The congress venue has a special place in the capital: it is located right on the bank of the Danube, which crosses Budapest dividing it into two parts, Buda and Pest. All of us who are involved in the organization very much are looking forward to acting as hosts to these important events. We hope that all participants, delegates and accompanying nondelegates, will find their stay useful and fun and enjoy the traditional Hungarian hospitality.

We are looking forward to seeing you all in Budapest.

András Illényi General Chairman of INTER-NOISE 97

Fülöp Augusztinovicz General Chairman of ACTIVE 97

GENERAL INFORMATION

ACTIVE 97, the 1997 International Symposium on Active Control of Sound and Vibration and INTER-NOISE 97, the 1997 International Congress on Noise Control Engineering, will both be held in Budapest, Hungary, 1997 August.

ACTIVE 97 will open in the morning on 1997 August 21, and close in the afternoon of August 23. There will be an INTER-NOISE 97 pre-congress reception in the exhibition area on Sunday evening, August 24.

The INTER-NOISE 97 congress will officially open in the morning of August 25 and close in the afternoon of August 27.

This article contains the following major sections:

The registration and hotel reservation forms are the same for both meetings. Delegates who plan to attend both ACTIVE 97 and INTER-NOISE 97 will pay a joint meeting registration fee which is less than the sum of the registration fees for each meeting.

Up-to-date information on the events can be found on the Internet at:

http://www.mmt.bme.hu/events/active97
http://www.mmt.bme.hu/events/inter-noise97

ACTIVE 97 TECHNICAL PROGRAM

The fifth of a series of symposia, devoted to the topic of active noise and vibration control, ACTIVE 97, will take place on 1997 August 21-23 at the School of Public Administration Budapest in conjunction with INTER-NOISE 97.

ACTIVE 97 has been designated a European Acoustics Association (EAA) Symposium as well as a symposium of the International Institute of Noise Control Engineering (I-INCE), and will be organized by the Scientific Society for Optics, Acoustics, Motion Pictures and Theatre Technology (OPAKFI) in cooperation with I-INCE.

More than 120 abstracts from authors in 29 countries have been accepted by the Technical Program Committee for presentation. The Symposium opens at 10.00 on August 21. The Conference Chairmen are Prof. Fülöp Augusztinovicz of the Technical University of Budapest and Dr. Joachim Scheuren of Müller-BBM, Munich. Six plenary lectures will be given, and three parallel sessions will be organized. The following invited plenary papers will be presented:

· Dr. M. Swinbanks: Active Control of Flexible Structures · Prof. T. Kobori: Structural Control of Buildings under Earthquakes and Strong Winds · Prof. M. Morari: Recent Developments in Control Theory – Impact on Active Control · Dr. C. Ross: Aircraft Cabin Noise Control · Dr. A. H. v. Flotow: Methods of Active Vibration Isolation · Prof. T. Fujita: Smart Structures for Active Vibration Control of Buildings

The contributed papers have been categorized in the sessions as follows:
Active vibration isolation
Active control of structural vibration
Active control of sound in ducts
Active control of sound in enclosures
Active control in vehicles
Transducers for active control
Sound reproduction and psychoacoustic assessment
Feedforward control
Feedback control
Active control of transmission through structures
Active control of outdoor sound propagation
Active control of fluid flow
Systems and hardware

ACTIVE 97 proceedings will consist of full length papers printed in hard-cover volume of DIN A4 format.

INTER-NOISE 97 TECHNICAL PROGRAM

More than 460 abstracts from authors in 48 country have been accepted for presentation in 8 parallel technical sections and poster sections at INTER-NOISE 97, the 1997 International Congress on Noise Control Engineering. INTER-NOISE 97 is the 26th in a series of international congresses on noise control engineering which began in 1972. INTER-NOISE 97 is sponsored by the International Institute of Noise Control Engineering and is being organized by the Scientific Society for Optics , Acoustics, Motion Pictures and Theatre Technology in cooperation with the Acoustical Commission of the Hungarian Academy of Sciences.

The theme of INTER-NOISE 97 is Help Quiet the World for a Higher Quality Life. Three distinguished lectures will address the theme of the congress. On August 25 at the opening plenary session: "Standards for a quieter world" by Bernard F. Berry (United Kingdom), on August 26 "Noise as a human stressor" by Michael Vallet (France) and on the third day of the congress "Calculating noise control by numerical methods – what we can do and what we cannot" by Fülöp Augusztinovicz (Hungary).

The technical program of INTER-NOISE 97 has been arranged by Dr. Frigyes Reis, the Congress Proceedings will be edited by Prof. Fülöp Augusztinovicz. Both Dr. Reis and Prof. Augusztinovicz are from the Technical University of Budapest.

In addition to the regular sessions of invited and contributed papers, 11 special sessions on a variety of topics on noise control engineering have been arranged for INTER-NOISE 97. The structured sessions have been organized by distinguished acousticians of the world as listed below:

· Vehicle noise – Ulf Sandberg (Sweden)
· Vibration and noise in dwelling, generated by traffic – Jacques Roland (France)
· Dependency of noise-induced health effects upon magnesium – Hartmunt Ising (Germany)
· Guidlines for designing survey on community reactions to noise – Ronald de Jong (The Netherlands)
· Building acoustics
· Outdoor sound propagation – Keith Attenborough (United Kingdom)
· Psychoacoustics and noise evaluation – Sonoko Kuwano (Japan), Hugo Fastl (Germany)
· Annoyance concepts in laboratory and field studies – Brigitte Schulte-Fortkamp (Germany), Peter Lercher (Austria)
· Assessment of noise impact in a multisource environment – Truls Gjestland (Norway)
· Binaural techniques and technologies – Jens Blauert (Germany)
· Measurement systems and analytical methods – Jan Leuridan (Belgium)

Panel discussions will be organized on some special subjects such as the Use of reciprocity in diagnostics and design, by István Vér (USA) and on the topics of some of the structured sessions.

CONGRESS / SYMPOSIUM INFORMATION

General

Last year, Hungary celebrated the 1100th anniversary of its founding in the Carpatian basin. Among the almost 200 countries of the world, Hungary is one which, due to the geographic size and economic potential, cannot be considered a major power. Its place is in the heart of Europe, its role being a bridge between West and East. This geopolitical situation, extensive developing relations, and tourist attractions have aroused the interest in the Republic of Hungary. Hungary ranks among the top tourist destinations in Central and Eastern Europe; the country welcomes more than 20 million tourist each year. What makes Hungary attractive for foreign visitors? It is a mixture of different factors: our ancient culture; our particular climate, unique to the Carpatian Basin, which produces succulent fruits and vegetables of a quality unsurpassed in the world; our integration of various cultures and cuisines; Hungary, the „Queen of the Danube”, plus other historical cities. And then there is Lake Balaton, „the Hungarian Sea”; the famous „puszta”, the most westerly open steppe in Europe; the excellent opportunities for hunting, fishing and horseback riding; our folklore and traditions; our rich music culture, and abundance of thermal waters, one of our unrivaled resources. Budapest has long been famous not only as a splendid capital city but a splendid spa, with 123 springs yielding 50,000 cubic meters of thermal water daily for use in baths and thermal hotels for both therapy and recreation.

Another special attraction is the caves, many of which can be visited – for example the Szemlõhegy and the Pálvölgy caves. When you come to Hungary, your greatest experience will be meeting people who are easy-going and friendly; almost everyone in the tourist business speaks English and/or other foreign languages.

Budapest is the political, administrative, social, economic, scientific, and cultural centre of the country. The visitor finds the capital a vibrant, cosmopolitan metropolis with a colorful nightlife and shops of almost every description. The city is a harmony of fascinating contrasts: ruins bear witness to its 2,000-year past alongside modern buildings; there are organ concerts and operettas; religious services and casinos; luxurious meals with gypsy music, and fast food snacks; fairs and festivals; deluxe downtown hotels and accommodations provided in bucolic settings.

A few Budapest highlights: Buda Castle, featuring a magnificent Danube panorama, which is part of UNESCO's World Heritage registry and includes the Hungarian National Gallery, Matthias Church, and Fishermen's Bastion . Not to be missed are Gellért Hill ; Margaret Island ; the Chain Bridge ; the Parliament ; the Opera House ; Heros' Square , featuring the Millenium Memorial , the Museum of Fine Arts , the Palace of Exhibitions , and, directly behind the square, the City Park , where one can find Vajdahunyad Castle and Széchenyi Baths, welcoming about 150 large-scale congresses and conferences yearly.

Conference venues and social events

ACTIVE 97 will be held at School of Public Administration (Budapest XI. Ménesi út 5.) which is situated on the foothills of Gellért-Hill. The location is a quiet, green island within a stone's throw of the pulsating heart of Buda, the western part of the two parts of Budapest. The location is still within walking distance of most hotels and the venue of INTER-NOISE.

The two events, ACTIVE 97 and INTER-NOISE 97, begin on August 20 with an optional pre-congress program, a river cruise on the Danube. Dinner will be served and participants will be able to enjoy the fireworks on the occasion of St. Stephen's Day. (Participation may be limited).

On August 21 there will be a welcome drink at the venue of ACTIVE 97 (price included in the participation fee).

The symposium dinner (optional) will be held in a traditional Hungarian village environment, offered by the Open Air Museum at Szentendre, 20 km North from Budapest.

INTER-NOISE 97 will be held at the Technical University of Budapest – TUB – (Budapest XI. Mûegyetem rkp. 1-3.) which is situated on the banks of the Danube. The central building has a special historical atmosphere; it is an exciting environment because of the thousands of students who attend the University.

INTER-NOISE registration will begin at noon on August 24. Participants completing the registration till 16.00 are invited to a 2 hours sightseeing-tour, free of charge.

The exhibition will officially open at 18.30 on August 24.

The Opening Ceremony begins on August 25 09.30, and will be followed by the first distinguished lecture. The Welcome party will be held just after the afternoon sessions (price included in the participation fee).

The Congress Banquet (optional program) will take place in the evening of August 26 in one of the most attractive palaces of Budapest.

The Congress will conclude with a Closing Ceremony in the afternoon of August 27 in the main aula of the TUB (price included in the participation fee).

TRAVEL INFORMATION

Air transportation and car rental services

Budapest, the capital of Hungary, can be reached directly by air from about 20 countries. Budapest Ferihegy Airport is located about 15 kilometers from the centre of the city. Hotels and conference site can be reached in approximately 35 minutes by Airport Minibus (10.- DEM/pers), or taxi (approximately 30.- DEM). [DEM = German Marks].

Delta Airlines is the official carrier for ACTIVE 97 and INTER-NOISE 97. The airline is offering a 12% discount off Special Coach fares. To obtain this saving please contact Vista Air Travel at fax number +36-1-269-6031 or by telephone at +36-1-268-1117 or -1118. For the international travellers, a group of 10 pers. or more leaving from the same destination and on the same flight, can receive special group discounts. Vista Travel can also assist you with fares and schedules on any other airline of your c h oice as well as book your rental car needs.

Railway

The capital can be easily reached by train from East and West. The railway stations are in the city and they are connected to public transport network. From Vienna, the international express train, InterCity offers extremely comfortable travelling conditions.

Other possibilities

From the West one can arrive by car or by coach along the newly finished highway M1/E5. From Vienna one can make use of the regular and very fast shuttle service of a hydrofoil-ship (the one-way trip takes about 4 hours).

You can get additional information on traveling possibilities here.

Public transport in the city

The three Underground metro lines, trams and buses make up an extensive public transport network. Tickets must be purchased in advance at stations. Daily and weekly passes are also available.

WEATHER

The weather is pleasant in the end of August, the temperature normally is around 20-25 °C (68-77 F) during the day. However there is no guarantee that weather will cooperate. Attendees should bring a raincoat and/or a light jacket and pullover.

By clicking, you can view

CURRENCY INFORMATION

The unit of currency is the Forint (Ft. or HUF). We suggest that you do not change too much money before arriving in Budapest. All major currencies can be exchanged at a number of places such as the airport, railway stations, exchange offices, hotels or banks. The exchange rate is more advantageous in Budapest, especially in larger banks in the city centre, than in your home country. You can also pay by credit card at the hotels, in good restaurants, at pump stations and even at large supermarkets. Even though all major credit cards are welcome in Hungary, the most popular ones are EuroCheck, Visa or EuroCard/MasterCard.

REGISTRATION PROCEDURE

The registration fee for regular participants includes lunches and proceedings on paper. Only lunches are included for students. Extra copies of proceedings are available at the registration desk.

Please send your Symposium/Congress Registration Form with the payment to the following address:

OPAKFI
H-1027, Budapest
Fõ u. 68.
Hungary
Tel/fax: +36-1-201-8843 or +36-1-202-0452

Please send your Hotel Registration Form and Registration for Tours and Optional Programs with the payment to the following address:

Congress Ltd.
H-1026, Budapest
Szilágyi E. fs. 79.
Hungary
Tel: +36-1-212-0056; fax: +36-1-156-6581

PAYMENT FOR CONGRESS/SYMPOSIUM

You are asked to send your total payment as a bank transfer to the account of

or as a check drawn in favour of OPAKFI (H-1027 Budapest, Fõ u. 68, Hungary) with a note that you are attending ACTIVE 97, INTER-NOISE 97, or both meetings.

OPAKFI will confirm the receipt of your payment. Please note that all costs incurred in the collection of payment (bank charges, etc.) are to be paid by the participants!

PAYMENT FOR OPTIONAL PROGRAMS AND HOTEL DEPOSITS

You are asked to send your reservation (FORM. N. 1.) total payment (including VAT) as a check drawn in favour of Congress Ltd. or as a bank transfer to the account of

with a note indicating that you are attending ACTIVE 97, INTER-NOISE 97, or both meetings. Alternatively, payment may be made by credit card (VISA or AMEX).

For the hotel reservation, please send your deposit payment including VAT to Congress Ltd. The additional nights you may pay directly at the hotel. You will receive a voucher confirming your deposit prepayment with the confirmation letter from Congress Lt d.

Please note that all costs incurred in the collection of payment (bank charges, etc) are to be paid by the participants!

* Because of the present financial situation in Europe the hotel rates and tours must be paid in German Marks. Of course, other foreign currencies will be accepted based on daily conversion rates published in the World's leading Economical newspapers.

Please note that in case of payments in currencies other than German Marks, a 15.- DEM conversion fee must be added to your payment.

HOTEL INFORMATION

Participants are kindly requested to fill out the form on page XX for all reservations. Reservations will be accepted only with payment of hotel deposit of one night's lodging. The special rates of hotels are offered only for registration prior to 1997 June 01.

Participants have choice of several hotels:

The Hotel Atrium Hyatt, five-star hotel is located downtown Budapest overlooking the Danube, and is within walking distance of the business, cultural and entertainment centre of the city, and 1.8 km from the conference site, and is on a tram line.

The Hotel Gellért, four-star hotel with special rates, is highly recommended for your stay as it is 5 minutes walking distance from the conference venue.

The Hotel Novotel, four-star hotel, which guests often praise as one of Central Europe's nicest Novotels is 2.4 km from conference site, and is on a tram line.

The Hotel Flamenco four-star hotel situated on the hilly Buda-side of Budapest, 1.2 km from the conference site, and is on a tram line.

More moderate accommodation can be booked in the Hotel Mercure, a three-star hotel (2.7 km on direct tram line) or the Ventura Hotel and the Hotel Griff two-star hotels about 2-3 km distant from the conference venue. At the Hotel Griff, some rooms can be booked as youth hotel rooms on lower price.

SPECIAL INFORMATION FOR EXHIBITORS

Exhibitors who have not yet arranged for a booth should fill out and fax to Congress Ltd. a Booth Reservation Form below to obtain further information about the exhibition and receive the Application and Agreement for Exhibit Space.

Contact:
Congress Ltd.
H-1026 Budapest
Szilágyi E. fs. 79.
Hungary
Phone: +36-1-212-0056, fax: +36-1-156-65-81
Costs for 1 m2; exhibit space USD 160 + 25% VAT
Minimal space is 2 m2;

BOOTH RESERVATION FORM:

We recommend that you confirm your registration and accommodations on an urgent basis as spaces to INTER-NOISE 97 Exhibition are limited.

OTHER PROGRAMS FOR ACTIVE 97 AND INTER-NOISE 97

Social Events

The series of the rich program of social events of ACTIVE and INTER-NOISE 97 begins with a 3-hour boat trip on the Danube on the national feast day, on August 20. 3-course dinner with drinks will be offered during the trip. Participants will enjoy the fireworks as part of the national celebrations on the occasion of St. Stephan's Day.

Price: 105.- DEM Participation may be limited.

The symposium dinner of ACTIVE 97 will be organized in the Hungarian Open Air Museum at Szentendre, 20 km North of Budapest in the picturesque Danube-band.

Beside enabling attendees to taste the specialties of the Hungarian kitchen and some good Hungarian wines, participants will also get acquainted with the rich traditions of the hosting country, its architecture, its way of living, culture, including handi work of local craftsmen, typical Hungarian dances and songs – all these in a true authentic manner, still in a living environment.

Casual wear is recommended. Travel by coach, dinner, drinks, soft drinks and folklore program are included.

Price : 65.- DEM

A 4-course luxury dinner with an evening performance (drinks, soft drinks coffee and transfer from TUB are included)

Price: 100.- DEM Participation may be limited

A three-hour long guided sight-seeing by coach in Budapest with short stops at the most important buildings and monuments.

Price: 35.- DEM

Accompanying Person's Program

Guided visit to the National Gallery and the Castle District of Buda, short stop in a confectionery (refreshments, café); travel by coach.

The evening Welcome Party on August 21 and the Closing Ceremony on August 23 are included.

Fee: see Registration Form

Cooking School with lunch in Buda Hills.

The evening Welcome Party on August 25 and the Closing Ceremony on August 27 are included.

Fee: see Registration Form

Optional excursions and tours

Minimum number of participants in the Optional Programs is 30 persons. Fees will be refunded if this minimal number is not reached.

* TUB: Technical University of Budapest

(technical visit included)

This tour brings guests to 4 x 440 MR nuclear power station at Paks on the bank of the river Danube. The Paks Power station is among the first ten in the reliability list of nuclear power stations in Europe and offers diagnostic monitoring solutions, data collection and evaluation. Following the technical visit, guests travel to the Lake Balaton. Visit the Tihany abbey and Balatonföldvár. First evening at the Lake Balaton.

On the second day, a visit to the Nagyvázsony castle leads visitors back to the middle-ages, and Herend Porcelain Manufacture gives the opportunity to see and purchase the world-famous handpainted china. Next stop is Sopron, a Hungarian town closest to the Western border famous for its vineyards and historical buildings.

After spending the second night of the tour in Sopron on the third day travel to Pannonhalma, part of World Heritage. Visit to the Benedictine Abbey, founded in 996. Lunch in the city. Return to Budapest by coach.

Travel by luxury coach, 2 nights accommodation, breakfasts, 3 lunches, 2 dinners, museum entrance tickets and guide services are included.

Price: 560.- DEM

Depart from TUB Main entrance at 09.00, returning at 17.00 on the third day

On tour starting at August 28 there will be a possibility, upon request, to end the tour at Schwechat (Vienna) airport at 12.00.

(technical visit included)

Visegrád – visit to the ruins of the former Royal Palace built in the 13th century. Visit to Szentendre a beautiful small town with old streets, houses and churches from the 18th century. Home-museum of famous Hungarian ceramist Margit Kovács. Have coffee and cake in a traditional Café, and an opportunity for shopping. Technical visit to the Noise and Vibration Laboratory of Building Science and Innovation Limited at Szentendre. Museum entrance tickets, English guide servi ce, travel by coach, coffee and cake are included.

Price: 65.- DEM

Depart from TUB Main entrance at 09.30, returning at 13.00

One-day tour to the biggest lake of Middle Europe. Visit to Balatonfüred – traditional Spa – close to Tihany Peninsula. Interior guided visit of the Abbey founded in 1051. Following the lunch in a traditional restaurant you cross the lake by ferry. On the Southern part of the Lake you visit Balatonföldvár. Wine testing and free program.

Price: 100.- DEM

Depart from TUB Main entrance at 09.00, returning at 19.00

Participants will drive to Kecskemét and have a guided walk in the city, visiting the Museum of Naive Painters. Then, attendees will have lunch in an attractive location Köncsögpuszta, where welcome drinks and horse show will greet our guests. A nice lunch will be served in a "Csárda" – typical Hungarian restaurant.

Price: 95.- DEM

Depart from TUB Main entrance at 09.00, returning at 16.00

Sightseeing in the historical, educational and religion city, visiting the Castle and the Cathedral of Eger. You will have the possibility to taste famous wines of Eger, enjoy the minaret from the 16th century when Turkish siege took place, and have a nice dinner with gypsy music in an old wine cellar.

Price: 90.- DEM

Depart from TUB Main entrance at 13.30, returning at 22.00

A journey following Dr. Békésy's footsteps in Budapest. You are invited to a discovery expedition, which aims at tracing the tracks and activity in Budapest of the famous Nobel-price physicist and acoustician of Hungarian descent. During the half day excursion, you will visit the centre of Hungarian Broadcasting Company and the Research Institute of the Hungarian Post. Finally, you will arrive at the Museum of Broadcasting and Television in Diósd (18 km from center of Budapest), where you will have an overview of his work based on the material transported from Honolulu, where Békésy spent his last years. You can also see some experimental equipment in the memorial room named after him. Coach travel, English guide, soft drinks are included.

Price: 30.- DEM

An afternoon of sports in Buda Hills with choices of horse riding or travelling by coach (with horses) or golf match. A barbecue will be offered on the grill terrace of hotel next to the sports square.

Price: 70.- DEM

Depart from TUB Main entrance at 17.00, returning at 21.00

You can find a time schedule at the end of this section.

PRELIMINARY TECHNICAL PAPER LISTING ACTIVE 97

Active vibration isolation

3D model of off-axial synchronous elimination system · A multi-channel active vibration controller for machine isolation · Active control of mechanical systems vibration · Active vibration control in constructions with resilient mounts · Active vibration control of mounted distributed structures with a reduced set of actuators · Experimental study on active isolation floor system for micro-vibration

Active vibration control

A control of grey model systems with removed residuals for the vibration of rotor system · Active control of beam flexural vibrations excited by broadband disturbance signal using piezoceramic devices · Active control of curve squeal caused by trains · Active control of structural vibration and sound pressure associated with a ribbed plate under heavy fluid-loading · Active control of vibration intensity in a beam terminated by elastic impedance · Active damping as a filtration problem · Active modal control of a planar structure using distributed modal sensors · Active vibration control of structure by incorporating adaptive feedforward control · Comparing feedback vibration control and feedforward power-flow-based control strategies using a simple plate example · Eigenstructure Assignment by Piezoceramic actuators for typical aircraft elements · Experiences of active vibration control on typical aeronautical structures · Experimental assessment of the performance of MIP active control strategy · Microvibration control on a satellite truss structure · Modelling and control of coupled vibration of ligth-weight flexible robot · Piezo-ceramic sensor and actuator optimal location in modal control of complex flexible structure · The control of transmitted power in an active isolation system

Active control of sound in ducts

A genetic algorithm for active noise control in a duct · Active control of sound in ducts using self directional secondary sources · Active noise control in a duct by using the wave decomposition technique · An in-duct sensor array for the active control of sound radiated from flow ducts · Basic study of ANC in an acoustic wave-guide · Calculation of actively absorbing duct linings · Development of Active Acoustic Treatment – Phase 1; Basic Concept and Development of AAT-Cell · Development of active acoustic treatment – Phase 2; Duct test of AAT-sheet · Limitation of active sound control system due to structural/acoustic coupling · Optimisation of hybrid absorbers for use in noise absorbing ducts · Practical design criterion for industrial systems

Active control of sound in enclosures

A new generation of ANC Headset · A novel secondary source for a local active noise control system · A state-space formulation of coupled structure-acoustic vibrations for active-control simulations applied to a cavity enclosed by a sandwich cylinder · A time-frequency LMS algorithm for the remote microphone technique · Active control of transmitted sound in buildings · Active noise canceling in headsets: Limitations caused by non-minimum phase transfer function of the canceling sound source · Adaptive feedforward active noise reduction headset for low-frequency noise · Application of adaptive algorithms to active noise control in a corridor of a building · Constrained optimization of active noise control systems · Feedback control of sound in headrest · Feedback control of the first two resonances in a cavity · On the active cancellation of ship waves · State space feedback control of sound radiation using structural sensors and structural control inputs · The active control of human snoring · The ANCAS seat: Extension and industrial applications

Active control in vehicles

Active control of helicopter interior noise · Active noise control in the SAAB 340 and the Saab 2000 airliners · Compact active noise control units for automobile intake low frequency noise attenuation · Comparison of structural and acoustical active noise control performance of the Fokker 100 based on experimental simulation models · Implementation at an active noise control system in a van · Off-road vehicle cab active noise control system: looking for the best configuration · Prformance of a multiple versus a single reference MIMO ANC algorithm based on a Dornier 328 test data set · Two-degree-of freedom active noise control of road noise inside automobiles

Transducers for active control

A comparison of methods for optimising the number and location of sensors and actuators in an actively controlled vibro-acoustic system · An alternative source for high sound pressures and low frquencies · Design of a laterally radiating piezoelectric actuator to provide a high volume velocity · Electrorheological fluids as an electrically controllable medium and possible applications to underwater sound absorbers · Integrated smart actuator for underwater acoustic boundary control · Kernel of a projection operator in an hybrid acoustic and structural noise control · Measurement methods of electromechanical film loudspeakers · New directed stick radiator with ajustable directivity characteristic for directed active noise cancellation and directed sound reproducing · Nonlinearity compensation of direct radiator loudspeaker for the reduction of harmonic distortion · Number and placemnet optimization of actuators and sensors in piezoceramics-based active noise and vibration control systems by generic algorythms · Optimal location of piezoelectric actuators on a beam · Optimal location of PZT actuators for the PVDF based wavenumber sensing approach in active sound radiation control · Performance prediction of an active noise control system using an atrificial neural network · Piezopolymer sensors and actuators for airborne sound · Piezopolymer strain transducers · Stress intensification due to polarization switching in vibration of ferroelectric ceramics · Subsonic compressed-air sources for active noise control

Feedforward control

A new adaptation algorithm for active noise control in a duct · Adaptive algorithm for active control of harmonic signal with on-line error path modeling · Experimental investigations about the solidity of active noise control physical systems to primary field · Frequency-domain adaptation of feedforward and feedback controllers · Minimisation of the maximum error signal in an active control system – a practical approach · The effect of structured plant uncertainty on the design, stability and performance of multichannel feedforward controllers · Unified-error filtered-X LMS algorithm for one-line active noise control in time-varying environment · Active sound control in the presence of power limiting constraints · Adaptive feedforward control system improvement using multi-rate filtering · Adaptive noise control in ducts using delay-plus-filter structures · Convergence characteristics of active noise control sytems with delayed-x LMS algorithm · DSP Implementation of an adaptive robust H (oo) adaptive electronic muffler in the presence of acoustic feedback · Multi-channel robust adaptive active noise control based on stability-assured algorythms

Feedback control

A methodology for the design of feedback control systems for the active control of sound · Active control of enclosed sound fields with parametric uncertainty · Broadband MIMO feedback ANC in Ariane fairing · Optimal feedback control of a radiating plate under broadband acoustic loading · Periodic noise cancelation using resonator based control · Sensititvity to plant modelling uncertainties in optimal feedback control of broadband sound radiation from a rectangular baffled panel · The optional-summed algorithm for active noise control

Sound reproduction and psychoacoustic assessment

Acoustic fields generated by virtual source imaging systems · Loudness of signal harmonic components evaluated from different kind of noise · Subjective investigation of the new transaural system (Stereo dipole system) · The effects of reflections on the performance of virtual acoustic imaging systems

Active control of transmission through structures

Active control of broadband noise transmitted through a sandwich panel using piezoelectricelements · Active control of sound radiation from cylinders with piezoceramic actuators and structural acoustic sensing · Active control of sound transmission through a double panel using structural and acoustic sources · Active control of sound transmission through a double-panel partitiion using a distributed PVDF actuator · Adaptive disturbance cancelling control for sound transmission through plate by using collocated piezoelectric sensors and actuators · An experimental evaluation of partition segment configurations for the active control of sound transmission through discretized partitions · Feedback control of broadband sound radiation using a volume velocity sensor · Feedback control of noise transmission through double waa partitions · Mechanisms of active attenuation of noise transmission through double walls · Radiation modes and comparison of active control effects for transmitted sound power through a clamped plate · Simulation of an active vibration control procedure: comparison simulation/experiments

Active control of outdoor sound propagation

Active barrier for road traffic noise suppressing · Active control of incoherent line sources · Active control of sound from a moving source · Increase of the noise barrier efficiency with an active noise control technique · Noise barrier using active noise control for electric power facilities: experimental study in the outdoors

Active control of fluid flow

Design of an active cancellation device for internal combustion engines · Experiments with distributed suction for automatic transition control

Systems and hardware

A dual channel active noise controller developed on a DSP starter kit · An adaptive algorithm for realize active noise control system by a fixed point processing type DSP · Conception of an active acoustic anechoic multicellular layer · Hybrid NOVACS – The new hybrid controller proposed by TechnoFirst · IDAC 5210 intelligent data acquisition system – an ideal tool for active noise control problems

PRELIMINARY TECHNICAL PAPER LISTING INTER-NOISE 97

0 – General

30 years experience in teaching engineering acoustics · Noise measurements in student's laboratory: An analyzer based on Brüel & Kjaer 2232 sound level meter · The role of science shops in acoustics (and) education

1 – Emission: noise sources

A characteristics of aeolian tone and broadband noise generated by a circular section bar at several angles to the flow · A design process for minimising cooling system noise levels in modular disk drive storage sub-systems · A new porous pavement with extended acoustical lifetime and useful even on low-speed roads · A study to reduce the interior noise of diesel railcar · Analysis of characteristics of noise generated from railway station "Kyiv-Passenger" · Characteristics of MRT train noise · Control of aerodynamic noise generated from two-dimensional models · Definition of driving standards and operating conditions for comparable sound recordings inside the car · Development of an acoustic enclosure for diesel engine · Development of queting techniques for wind tunnel · Diagnosis of vehicle interior noise by an experimental approach · Distribution of noise source generated from groove flow · Effects of switching angles on noise and vibrations in a switched reluctance motor · Exterior noise reduction of vehicles by passive measures on the power train · Influence of propagation path characteristics on aviation noise · Inter-relations between diesel engine combustion noise and exhaust emissions under varied running conditions Low flying military aircraft noise and human health – A tri-national study of the feasibility of epidemiological research · Low frequency rail noise... Modelling and applications · Making road traffic quieter – some proposals based on testing of 600 used motorcycles · Measurement of noise exposure on osprey nesting sites from low-flying military aircraft in Labrador · Methodologies for conducting large scale aircraft noise exposure field studies · Modelling aircraft directivity patterns at static and in flight conditions · Noise and Vibration of cleanroom fan filter units · Noise prediction of cattle bells · Noise reduction for friction saws · Noise reduction mechanism and optimized porosity ratio of porous elastic road surface · Noise reduction of cross flow fan · Omnidirectional volume velocity point sources; how can they be approximated? · On the acoustical emissions and immissions of iron and steel industry · Prediction methods for designing of operational procedures for aircraft noise abatement around the airports · Prediction of the radiation of aircraft turbofan broadband noise · Proportion of the structure/air borne sound power of a large scull-cap press Reduction of control valve noise by means of model tests · Research of generation of noise of diesel engine components · Road noise in cars: from perceptive evaluation to car modification · SAE Cooperative Research Program – Sound level urban driving cycle · Separation of piston-slap noise from engine noise · Some features of noise control of circular-saw machine tools · State of the art in tyre/road noise modelling · The contribution of heavy vehicles to road traffic noise · The countermeasure for aircraft noise in Taiwan area · The world's most silent board Machines · Tire dimensional influences on tire/road noise · Towards generic design criteria for vehicle door shut exterior noise quality · Typical noise emission values for cars and trucks · Varying contact stiffness induced rolling noise · Vehicle pass-by noise control at Porsche · Vibro-acoustic measurements of an inverter driven induction motor

2 – Physical phenonema

A DRBEM model for sound refraction by a jet flow · An analytical method for outdoor noise propagation · An experimental study of the grazing flow effect on the acoustic behaviour of a branched Helmholtz resonator · Analytical calculation of sound rays with respect to a given temperature stratification · Array processing for the analysis of outdoor sound · Aspects of drill rod and tool noise generation in rock drilling and impact hammering · Calculation of room acoustical parameters using the phonon transition theory after a "Markov process" · Calculation of the acoustic radiation of an industrial structure with simplifications based on physical observations · Computation and experiments for the flow-tone generation in an axisymmetric whistle · Experimental investigation on the determination of the sound transmission through heat exchanger · Ground effect experiments for the prediction of road traffic noise · Impedance profile identification from impulsive transmission response · Influence of a laminar flow on an acoustical imaging system based on a beamforming technique · Localized modes in hydroelastic systems · Natural ambient background sound near the Waddensea · Numerical modelling of noise in some urban conditions · On the acoustic performance of low-profile pedestrian restraints · One theoretical analysis on aeroacoustic sounds from surface irregularities · Propagation in ducts with coupled resonators on the walls · Railroad locomotive warning horn characteristics and sound propagation model · Rough surface ground effect · SASER (Acoustic laser) · Scattering matrix measurements of circular diaphragm with superimposed stationary flow · Some statistical analysis of noise reduction by long range propagation over sea · Spatio-frequential optical measurement of acoustic sources in a turbulent flame · The EQUIP project: Methodology and a computer tool for low noise design · The influence of atmospheric channel of the sound propagation on the noise control problems · The insertion loss of screens under the influence of wind The sound field above an externally-reacting ground · Trapped modes in a channel filled with liquid caused by submerged structures · Variational formulation using integral equations to solve the problem of sound propagation above an absorbing plane

3 – Noise control elements

A boundary element formalism for the study of noise barriers · A method of supporting the designing of passive noise control media by means of computer tools · A new noise reduced construction for exhaust of powerful internal combustion engines · Acoustic impedance for absorbent structures used in passive mufflers Acoustic modelling of porous road asphalt · Infuence of disorder · ACTA: The second generation of active aeraulic muffler · Active control of sound transmission through a discretized double wall partition composed of adjoining acoustically actuated segments · Active double-glazing window · Active multichannel muffler for the ventilation system of subway in Paris · Active Noise Cancellation in MRI Scanners · Active noise control by means of virtual error microphone system · Aerodynamic and aeroacoustic behaviours of a flap in incidence used for the active control of pulsed flows and associated noise · An active noise control system for controlling humming noise generated by a transformer · An experimental study on noise emmission level for four types of vertical drainage pipe system in apart building · Analysis of multi-branch flow ducts · Anisotropic elasticity model for acoustic foams · Cabin noise control in the Saab 2000 airliner · Conception of "multimedia computer guide" for the needs of support of designing passive noise control media · Determination of repeatability and reproducibility values for the airborne sound insulation of walls: an european Inter-Laboratory test · Dynamic measurement of mechanical anisotropic properties of polyurethane foams for the Biot model · Effect of honeycomb sandwich panel for duct noise reduction at low frequency · Effects of an active noise control system on the perception of car interior noise · Experimental determination of the muffler's acoustic parameters in operating conditions with the 3-transducer intensity technique · Experimental study on a new composite muffler with sound absorbing materials covered by microperforated panels · High frequency attenuation in ventilating ducts · Hydraulic excavators – a systematic approach of noise control · Implementation of in-duct active control · Increase of the noise barrier efficiency with an active noise control technique · Influence of the methods of mounting of spatial absorbers in reverberation room on sound absorption coefficient · Local noise protection windows programm – results, organisation, experiences · Low frequency behaviour of double glazings in laboratories · Measures of noise reduction on steel railway bridges · Mechanically driven anti-noise generator to reduce the low-frequency pure tone caused by a vibrating-screen · Modification of flow – structure interaction in the boundary layer on the laminar aitfoil as an effect of external and internal acoustic excitation · Noise reduction in centrifugal fans : comparative study by use of resonators and by loudspeaker source · Numerical modelling of railway noise barriers · On subjective grading of impact sound on light weight floor structures · On the space-time local active control · Organizing and using selected types of databases for the needs of computer aided designing of passive noise control media · Performance analysis of LMS and RLS algorithms for active noise control of vehicle engine booming noise · Self tuning control for sound transmission through double panel by using piezoelectric actuators · Some features of small acoustical shields application in special constructive machines · Sound absorption characteristics of periodic resonance absorbers · Sound insulation of an acoustic louvre · Sound reduction of low railway barriers · Sound Transmission and radiation of a double glazed window · Specific designs of noise barriers for trains: Part I: Theoretical study of forms and materials · Study on perforated-plug muffler · Study on the reduction of Karman-vortex induced sound using a quiet flow wind tunnel · Subjective evaluation of the effects for active noise control · The array measurement technique applied to high speed train noise barrires: first results · The effectiveness of shallow cuttings in controlling traffic noise · The estimation of the potential muffling effects in the silencer with absorbing material with moving skeleton · The real-time active control system for attenuating the engine noise in a car · The sensitivity of sound insulation to partition location – case of heavyweight partitions · To design against road traffic noise in housing development, a Hong-Kong experience · Traverse waves in perforated tube muffler · Use of rectifying meshes for active control in an air flow duct

4 – Vibration and shock

A boundary element program for the study of vibration propagation in the ground · A layered soils model to study the vibration a behaviour of embedded plates · A new calculating method of structure-borne noise control in vehicle cab · A simple measuring method for blocked translation and angular transfer stiffness of vibration isolation elements · A study on specification of vibration criteria for vibration sensitive equipment · About the behaviour of periodic lattices of plates; analylical and experimental approaches · Acoustic fatigue of box-type aircraft structures: some experimental research · Acoustic radiation on shell mode resonances of the reciprocating compressor · Active control of beam flexural vibrations excited by broadband disturbance signal using piezoceramic devices · Alerting British industry to the techniques and benefits of controlling risks from hand-arm vibration at work · An effect of seat vibration on sleepiness of the subject under exposure of interior noise of small diesel truck · An example of prediction of structure-born sound from large vibrating source and its application · Application of a calculation model for low noise design of steel railway bridges · Application of fractional derivative models for predicting damping materials · Application of structural intensty measurement for estimating sea parameters · Application of the Wavelet transform for structural intensity measurements · Assessment of construction-related ground-vibration impacts on historic structures · Case studies for the decrease of vehicle interior noise · Chain saws applied in the forestry · Characterisation of aerodynamic and acoustic excitation sources of a TGV Duplex · Determination of surface mobility of an infinite plate for a circular contact area with uniform force excitation by an experimental method · Development of a high damping rubber material and its application to a shock vibration · Dynamic response of buildings to groundborne vibration from transit trains · Evaluation of structural intensity in assembled structures by modal approach · Experimental study on the characteristics of whole-body vibration exposed from automotive seats · Force and moment induced structure-borne sound power by machines on floors · Forced response of a sandwich plate with a flexible core decribed by a biot-model · High frequency vibration in structures: comparison of SEA, Energy conduction, ray tracing models · Identification of dominant sound sources in a vehicle · Identification of vibration transmission through belt-pulley systems by using the structural intensity method · Intensity measurements on beams: a comparison of different formulations · Measurement of structural coupling between walls with a window aperture · Noise reduction of two large stamping machines in a large industrial hall · Piezoceramic transducer for mechanical shocks utilised in optoelectronics systems · Piston machine pipelines vibration attenuation using compact low-frequency pulsations damper · Power flow for 2-dimensional structure and its relation to structure-borne sound · Propagation of vibration generated from building equipment in the apartment building · Quality criteria for manufacturers of household machinary with respect to structure-borne sound transmission in dwellings · Reduction of structure-borne noise emissions from above-ground railway lines by means of ballast mats – analytical model and measurements · Roughness growth on railway wheels due to braking · Single and multi plane automatic balancing rotors · Some contributions regarding the vibrations damping of the car elevators walls Sound transmission loss via wall ties · Static stiffness and vibration damping of sandwich beams containing rubber and fiber-reinforced plastic layers · Structure-borne sound of a fluid-flow machine · Substructuring technique: Improvement by means of singular value decomposition (SVD) · Surface excitation: a theoretical and experimental study of strip excitation on a line-stiffened plane · The effect of a viscously damped dynamic absorber on a complex vibration system · The effect of junction eccentricity on the vibrational energy transmission at plate/beam junctions · The pseudo-forces method for characterizing the source-strength for structure-borne sound · The treatment for squeal noise on railway wheels with rings · Time-domain estimation of vibrational wave amplitudes and intensity using digital techniques · Transmission of sound through finite double windows · Vibration analysis of finite length cylindrical shells with different boundary conditions · Vibration control of circular plate · Vibration propagation in coupled plate structures

5 – Immission: physical Aspects of environmental noise

A comparison between the noise surveys carried out in two spanish cities (Valencia and Pamplona) · A comprehensive view of the environmental noise pollution in the Hungarian town Gyõr in the last ten years · An investigation of sound insulation measurements on wooden joist floors in the field by multivariate data analysis – Part 1. Impact sound insulation · Assessment of airborne and impact noise from neighbours · Development of the cities and the acoustical environment of the urban areas · How to locate noise sources by performing intensimetric measurements · Implementation of noise sanitation programs with large industries; Principles and practice based on experience with sugar refineries · Improvement of sound reduction index Rw of a door by 5 dB · Laboratory experiment on the impression of river flow sounds · Limiting the noise impact of back-up alarms near construction sites · Low noise levels in ships are compatible with high speed? The experience on fast ferries · Measurement of low frequency sound in rooms – A detailed comparison of methods · New approach to environmental noise problems due to new industrial zones · New Czech technologies of two different products for room and building acoustics · Noise and vibration in buildings situated near the underground and tram lines and highways: investigation and control · Noise control in a domestic vacuum cleaner · Noise maps of cities and rating of noise abatement concepts · Noise reduction of a building yard in urban area: a case study · Numerical simulation of airborne sound transmission at low frequencies: the influence of the room and the partition parameters · Preparing the "Passive noise control program along roads" in Hungary · Problems of traffic noise in Budapest · Propesties of urban traffic noise · Researches, results and propositions concerning the noise and vibrations poluation produced by the road traffic · Saturated foam damping · Ship diesel-generator set sound-isolating system · Study on environmental noise monitoring technique in Bangkok Metropolitan Area, Thailand · The effect of traffic organizing arrangements on noise immission – a case study · The influence of loading on the characteristics of the elastic layer of the floating floor · Towards standardise social noise surveys: The Italian contribution · Tram induced vibrations apply as secondary structure borne noises in the near environment of tracks · Vibration reduction index Kij for junctions of building elements with cavities

6 – Immission: effects of noise

A cross-cultural study on subjective reaction to the neighbouring noise · A new approach for modelling range effects in the evaluation of equal loudness level contours · A practical guide for designing questionnaires on community response to noise · A study of noise problem of a manufacturing plant · An approach of multivariate analysis for the development of an annoyance index for heavy diesel engine sounds · An overview of health effects and noise – the way forward · Annoyance caused by sounds of military tracked vehicles, for indoor and outdoor conditions · Annoyance evoked by combined patterns of irregular intermittent noise · Annoyance is a necessary but not a sufficient measure of community reaction to noise Annoyance of speech sound in steady noise – Effect of meaningfulness in speech and background noise – · Assessment and relevance of methods for calculating onset rate of low altitude flight noise · Assessment of noise impact in a multisource environment · Aural and circulatory effects of magnesium supplementation in noise-exposed workers: results of an one year field study · Chronic and acute noise effects on children · Chronic noise stress causes intracellular Ca/Mg shifts with detrimental effects on circulation and blood pressure · Cognitive and perceptual style in sound evaluation: Historical development and current situation · Community reactions to railway traffic – effects of counter measures against noise and vibration · Comparison of community response to road traffic noise between detached and apartment houses residents: a survey in Sapporo, Japan · Conceptual, methodological and dose-response problems related to annoyance and disturbance · Continuous evaluation of noise in laboratory situations · Continuous loudness scaling of trffic noise in outdoor settings and under laboratory conditions · Description of person-noise environment relation from a viewpoint of cognitive psychology · Detection of the ambulance siren while driving · Effects of noise pollution in a school in Rio de Janeiro: a case study · Effects of noise pollution on transition of recidental sinto offices in Istambul · Effects of noise reduction after rail grinding on annoyance · Effects of noise shaping filters · Empirical issues concerning annoyance models for combined community noises · Evaluation of the indoor sound of a modern car and high speed train by means of psychoacoustic parameters · Evolution of the athmospheric sound quality in Gandia town, Spain · From flow resistance to speech intelligibility · Human perception of environmental noise in acute and chronic exposure conditions · Influence of vision on audition in an urban context · Interaction between noise-induced stress and magnesium losses and its longterm health effects Investigation of subsonic oscillations influence on aircraft personnel working under nervous-psychophysiological overloads · Loudness and sharpness relations in perceived annoyance · Loudness of noise-tone complexes: Comparative effects of dichotic and diotic listening · LowNoise-Technology in contrast to conventional noise prevention · Minimizing aircraft noise exposure at the new Oslo Airport - Gardermoen · New methodology regarding environmental impact assessment for traffic noise in Portugal · Noise as a human stressor · Noise assesment methology in multi-source environments · Noise reduction effects of low-noise pavement and noise barrier · On the accuracy of loudness analysis sysytems · On the difference in the evolution of judgements depending on either retrospective or actual noise annoyance measurement · On the influence of stimulus duration on psychophysical judgement of environmental noises taken in the laboratory · Overall annoyance ratings in a multisource environment · Parallel processing of auditory and visual information in brain: Measurement and analysis of evoked potentials · Peoples choice of words for describing noise reactions · Perceived annoyance as a function of number of noise events and maximum noise level · Pitfalls to avoid in noise reaction survey planning · Prophylactic and therapeutic effects of magnesium on acoustic trauma: animal studies · Protection against noise induced hearing loss by oral magnesium intake · Reliability and validity of four measures of noise sensitivity · Research strategies for investigating the effects of aircraft noise on human health: the results of a tri-national feasibility assessment study · Resolving differences in room noise criteria – a status report · Significance of the variation of annoyance relationships based on the field and laboratory studies · Sound characterization of urban environment · Sound pressure level distributions in 10 Warsaw discotheques and TTS2 in attendants and performers · Speech characteristics in high noisy environments · Survey on sound environment of the capital of Oman · Synergetic noises in residential areas under annoyance evaluation. An interdisciplinary concept · The concept of annoyance and its inherent limitations: An epidemiologic appraisal · The distribution of biologically active infrasound zones in the space of premises · The effect of room acoustics on the intelligibility of speech in school classrooms · The effects of ambient noise: evidence from a secondary analysis of 20 social surveys · The experiment on loudness in field and laboratory – an examination of the applicability of Laeq to mixed sound sources · The influence of oral magnesium administration on TTS in humans · The management of light aircraft and microlight noise at military airfields · The new ANSI method for assessing combined noise environments; comparison with other standards and methods · The quantification of effects of noise in the ergonomic examinations · Valuing transportation noise annoyance: overview of the methods, the results and their applications

7 – Analysis

A comparison of methods for estimating exhaust or air inlet sound pressure spectra for IC-engines with speed variations · A global revision of the literature on the experimental measurement of mechanical damping · A hybrid technique for combining boundary finite elements method with uniform theory of diffraction in acoustical problems · A new design tool for optimization of viscothermal damping in double wall structures · A new method for measurement of sound insulation · A new technique for the measurement of the properties of multi-layer sound insulation materials · A new variational formulation of 3-D acoustic radiation in non-uniform flow medium · A novel method for the prediction of structure-borne and air-borne vibration in closed built-up plate structures · A numerical study of general aviation noise abatement procedures.Correlatons between energy costs and environmental benefits · A proposal for audiometric cabins evaluation · A study of measured road traffic noise levels and levels calculated by the Nordic calculation method · A wave approach to the SEA of a non-uniformly coupled two-plate system · Accuracy of loudness percentile versus measurement time · Accuracy of sound power level determination by the scanning intensity measurement · Acoustic holography: A necessary tool for noise source identification · Acoustical mobility for vibroacoustic prediction · Acoustical simulation and modelling of automotive tires · Aerofoil stall visualisation through acoustic imaging · Aircraft noise modeling: Maintaining accuracy at low noise levels · ALFA-Measurements outdoor · Algorithm of separation cardiac and lung noises · An evaluation method of sound insulation characteristics of a plate using small area test material and transfer function analysis · An experimental verification of the applicability of the least squares approach to an inverse problem in acoustics · An investigation of sound insulation measurements by multivariate data analysis – Part 2. Airborne sound insulation · An investigation on sound emission from a high-speed moving source · Analysis of acoustic pressure pulsation in pipes · Analysis of dynamic force between teeth wall in scroll compressors by elastic contact modelling · Analysis of short reverberation time measurements using several methods · Analytical methods for separating the signals from noisy data · Better binaural recordings using the real human head · Binaural "hybrid" model for simulation of noise shares in the interior of vehicles · Binaural technology: a technology with a view · BIPM – A method for the analysis of high frequency vibrations · Calculation model for airborne sound insulation of windows in the light of the results of research · Calculation of impulse response in 3-D sound field with absorptive boundary by the finite difference method · Calibration and evaluation of a moment actuator · Calibration of sound quality recordings · Calibration, primary-secondary-field · Classification of hourly Laeq patterns of urban noise · Combined FEM/BEM technique for linear acoustic radiation problems with applications to arbitary shell in fluid medium · Combustion engines: airborne versus structure-borne noise · Computer aided noise prediction of diesel engine power plant · Computer memory reduction by introducing cubic boundary element in sound field simulation · Decoding the source information by dichotic hearing · Dependence of accuracy of reverberation time measurement on input filters · Design and use of array microphones · Design, Theory and validation of low mass 6-DOF transducer using translational accelerometers · Detection of rattling sources in a gearbox by correlation technique · Detection of tonal components with a model of spektral and virtual pitch based on the Fourier-Time-Transformation (FTT) · Discussion of total loss factor measurement method for building elements · Dynamic stiffness and reduction of impact sound pressure level: A method of measurement coupled with a prediction · Effect of resilient layer on flanking transmissions of light masonry walls · Effects of time variances using MLS techniques in building acoustics for measuring sound insulation and reverberation time · Estimation of multiple reflectors ultrasonics echos in structure · Estimation of road traffic emission using Lmax measurements (relation Leq – Lmax) · Estimation of signal correlation and system analysis functions using ARVX and subspace models · Estimation of the frequency characteristics of a moving noise source · European Round Robin on low frequency sound insulation – numerical simulations of selected laboratories · Experimental statistical energy analysis: The indirect determination of operational input powers from energy measurements · Experimental verification of the waterhouse correction · Exterior noise from in-vehicle audio entertainment systems and effects on pass-by sound levels · Finite element analysis of vibration levels in layered soils adjacent to proposed transit tunnel alignments · Finite element approach for sound fields in rooms in the presence of limp membranes · Friction Identification of a sight stabilization system and its application for control performance improvement · Guidelines for the application of the MLS technique in building acoustics and in outdoor measurements · High sensitivity measurement microphons using laser welding · How accureate does an impedance model represent porous acoustic insulation? A validation study using a new wave based prediction technique · Identification of noise propagation path efficiency by coherence function measurements · Improved analysis of noise emitted by reciprocating machinery · Improved SEA modelling of vehicle body structures · Indices of the acoustic assessment of industrial halls · Indirect force spectra identification by FRF matrix inversion: A reliable approach based on error propagation models · Induced vibrations within buildings by train operations in tunnels · Influence of the power to the harmonics level in magnetostrictive component of the transformer noise · Influence of variations of primary data on the automatic recognition of aircraft noise events by acoustical instruments · Interactive database conversion and automation of the radar-based airport noise modeling process · Low frequency sound transmission measurements and numerical simulations: a comparative study MADRAS, an intelligent assistant for noise recognition · Mapped wave envelope method for investigation of the acoustic radiation properties of the termination of ducts · Marine medium-speed diesel engine noise identification by using hologgraphy reconstruction from intensity in situ measurements · Measurement of extremely low sound pressure levels · Measurement of noise from sound sources placed close to the ears · Measurement of oblique-incidence sound absorption coefficient using sound intensity · Measurement of turbulent generated noise in ducts · Measuring loudness on a hand-held sound level meter in real time · Measuring small volume by the acoustical pressure difference technique · Method for measuring and predicting vibrations from railway traffic · Minimization of statistical and deterministic errors in nearfield acoustic source identification · Modal properities of rectangular plates with viscoelastic restraints uniformly distributed along the edges · Modal shapes reconstruction method for large domains (structure and acoustic) · Model source of noise propagated by centrifugal machines · Modeling the noise field in sensor array processing · Modelling and simulation of a disturbed vibroacoustic signal in helical gears · Modelling of a machine as a system with multiple sources of noise and vibration · Modelling Sea-crane noise with SEA: how low can you go ? · Multivariate analysis of FFT-based 3D intensity measurements · Nearfield acoustic holography for mapping directivity of compact noise sources · New canadian noise exposure program · New multi-analyzer system for acoustic measurements · New system for building acoustic measurements · Night-time traffic assumptions for road noise impact predictions · Noise power using total energy density measurements · Noise prediction at the international airport of Thessaloniki "Macedonia" by the application of original and revised INM models · Noise radiation of resilient train wheels · Noise reduction of precision visual equipment using numerical model in consideration of transfer paths · Numerical investigation of the power injection method: Part 1. · Numerical investigation of the power injection method: Part 2. · Numerical investigation on sound waves in train tunnels · Numerical modeling of the vibroacoustic behavior of multilayer structures with poroelastic materials · On the influence of the subsystem mass or volume in experimental statistical energy analysis · On the quality of artificial head recording systems · On the use of real head recordings in product sound design · Online confidence limits of sound level percentiles and quality controlled short term separation of environmental noise components · Optimal control of duffing oscillator under parametric and external excitations · Order selective vibration analysis for diagnosis and quality control of gear boxes · Practical aspects for acoustical holography · Prediction equations of outdoor acoustic noise in some towns of Madrid · Prediction of a plasma wind tunnel test chamber sound emission · Prediction of impact sound on light weight floor structures · Prediction system of noise propagation in and around buildings with flanking paths · Problems of noise control in vehicles · Propagation models for the calculation of traffic noise · Psycho-acoustical characters of relevance for annoyance and perception of wind turbine noise · Quality control of machines using psychoacoustical values Refinement of aircraft noise modeling through integration of monitoring and modeling · Scale model study on elastical coupling · SEA-ANN approach for high frequency analysis applied on helicopter-like box structure · Simulation of the acoustic field radiated by an ultrasonic transducer · Simulation of transient sounds in a room using transmission-line matrix models · Solving of the inverse source problem through a Tikhonov regularization method for an acoustic source with arbitrarily shaped surfaces · Sound field analysis by using three-dimensional complex sound intensity method · Sound intensity measurements used for vacuum cleaner noise control · Sound quality estimation using neural networks · Sound quality features of the reciprocating compressor · Sound-vibration link analysis in a fuselage acoustic cavity for active control (ASAC) specification · Source identification nd prediction of Shinkansen noise by sound intensity · SPARSE microphone array for identification of sound sources on moving and non-moving objects · Spectrum of squared input force, input power, energy density and the complex modulation transfer function · Structural and acoustic modeling of an electodynamic loudspeaker · Study and characterisation of the ultrasonic probe · Subjective evaluation of speech intelligibility for normal-hearing persons and for persons with simulated minimal degrees of hearing loss · Subjective test results – their dependence of play back level · Suppression of turbulent flow noise for the in-duct measurements · The accuracy of airport noise monitoring systems · The analysis of vibration performance for a complex vibration isolation system by means of combining impedance network method with four-pole parameter technique · The attenuation of noise of an electric power plant: an active noise control technique · The detection of defaults near the interface by ultrasonic echography · The effects of cavity resonance on the mixing of rectangular jets · The influence of the spectral distribution of sequential reductions of noise in building and urban acoustics · The MLS measurement mode using in ship acoustic · The prediction of reverberation time by ray-tracing in enclosed spaces using a reduced time resolution · The seasonal nature of urban noise: a case of study · The seperation of background noise in railroad noise monitoring · The use of a-symmetry and non-uniformity in design of acoustic silencers · Traffic noise level measurements in a toll plaza environment · Traffic noise prediction in Barcelona with neural networks · Truck exterior noise emission breakdown; source strength identification and contribution analysis in normal operation · Ultrasound system of measuring the absorption of the ultrasounds in solids · Use of structureborne noise calculation to develop low noise gearbox of the passenger car · Vagueness and uncertainty in community noise annoyance modelling · Validation of simple techniques for predicting radiation of structure in nearfield · Validation of the modal expansion methodology applied to noise radiation prediction · Variation of contact stiffness as a sources of wheel/rail noise and vibration · Variation of noise along a road surface · Vibration signal analysis and control force estimation of a high-speed train · Vibrations and noise in dwellings generated by traffic · Vibro-acoustic analysis of airframe through dynamic substructuring · Wave analysis of the T-beam

8 – Requirements

A new legislation against noise pollution · Alternative proposal for the evaluation of the non-uniformity field indicator F4, described in the ISO 9614-1 · Can methods for describing multi source environments be used to unify standards? · Does Australian environmental legislation and its administration adequately protect the community against transport noise? · Equal sensations caused by vertical and horizontal whole-body vibrations · Excessive sound – Some public health concerns · Final results of a national round robin test determining the sound powerlevel of machines/equipment · Noise safety information survey of hand-held power tools · Optimisation of sources for field measurements in buildings · Overview of noise management in the Western Australian Mining Industry · Role of regional governments under the new basic environment law in Japan · Standards for a quieter world · Surface mining and related operations: Noise impacts in rural areas, including effects of local, state and federal regulations · Testing of the CEN survey method for building acoustic measurements in Germany · The standardization gap and the machinery noise declaration · The zoning of impact noise and land-use around the airports in Poland and Ukraine

This page is maintained by Ákos Dömötör.

Last modification: 13 February 1997.