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The Institute of Acoustics
Journal of Sotmd and Vibration (1975) 38(4), i-iv
THE
INSTITUTE
OF
ACOUSTICS
All enquiries should be addressed to The Secretary, Institute of Acoustics, 47 Belgrave Square, London SWIX 8QX (Telephone: 01-235 6111).
1.
MEETINGS" PROGRAMME FOR
1975
25-27 March 1975, at the University of Nottingham, Annual General Meeting and Spring Meeting. Subjects: Noise sources, Physical and medical ultrasonics, Concert hall acoustics, Intelligibility of speech, Acoustic imaging. Details from Dr V. W. Rampton, Department of Physics, University of Nottingham, Nottingham NG7 2RD. May 1975, at Mottram Hall Hotel, Manchester, a meeting on "Measurement and evaluation of aircraft noise". Details from W. A. Allen, Bickerdike/Allen/Bramble, 16 New Road, London NW3 IJA. 22 May 1975, at Bedford College, a meeting on "Measurement of acoustic power". Details from Dr A. E. Brown. June 1975, at the Engineering Institution, London, a meeting on "Vibrations in the ground and in structures". Details from Dr H. G. Leventhall, Department of Physics, Chelsea College, Pulton Place, London SW6 5PR. 23-25 September 1975, at Bangor, a meeting on "Instrumentation in oceanography", in collaboration with IERE. Details from Dr B. K. Gazey, Department of Electronic and Electrical Engineering, University of Birmingham, P.O. Box 363, Birmingham B 15 2TT. Institute of Acoustics members to be permitted to register specifically for "acoustical" session only. September 1975, in London, a meeting on "Absorption ofsound and vibration", in collaboration with materials and testing group of the Institute of Physics and the Institution of Mechanical Engineers. November 1975, at the Institute of Sound and Vibration Research, University of South: ampton, a meeting on "Railway and tracked vehicle noise". Details from Dr F. J. Fahy, Institute of Sound and Vibration Research, University of Southampton, Southampton SO9 5NH. December 1975, Location to be decided, an "Educational Meeting" in collaboration with the Association for Science Education. Details from Dr R.W.B. Stephens, Department of Physics, Chelsea College, Pulton Place, London SW6 5PR.
2. SPECIALIST GROUP ON UNDERWATER ACOUSTICS
It is proposed to form an Underwater Acoustics Group within the Institute of Acoustics. The broad aim would be to provide a platform for the exchange and the dissemination of scientific and technical information in this still expanding area of acoustics activity. To this end, it would organise general and specialist symposia and discussion meetings on various topics ofinterest to its membership. A constitution governing such groups (including financial arrangements) is being considered by the Council of the Institute of Acoustics. It would be of great help to the organisers at this stage if those interested in becoming members of this group i
ii
THE INSTITUTE OF ACOUSTICS
would write to: Dr H. O. Berktay, Department of Electronic and Electrical Engineering, University of Birmingham, P.O. Box 363, Edgbaston, Birmingham B15 2TT. Comments, suggestions and recommendations would be most welcome. 3. 8th INTERNATIONALCONGRESSON ACOUSIICS (London, July 23-31, 1974): PRELIMINARY REPORT
The eighth in this series of international congresses was the largest to date, both in the number of participants and in the number of papers presented. The theme adopted for the Congress was the timely one of Environmental Acoustics. The Opening Address and five of the eleven invited lectures were on this theme. There were 1438 participants with 210 accompanying members from 47 countries (see Appendix i). 572 papers were presented during the Congress. The Opening Ceremony was held in the Royal Albert Hall and attended by approximately 2000 people. The Congress was opened by Mr Denis Howell, M.P., The Minister of State at the Department of the Environment. The Congress President, Professor E. J. Richards, and the President of the International Commission on Acoustics also spoke at the Ceremony. These speeches were followed by the Opening Address entitled "Public Aspects of Environmental Acoustics" which was given by Dr R. H. Bolt. It was felt to be particularly appropriate that Dr Bolt should give this address on the 21st anniversary of his appearance in a similar role as first President of the International Commission at the first Congress in the series. The remainder of the Congress sessions took place in the suite of lecture rooms in Imperial College. The invited lectures were given in the Great Hall at the start of each morning and afternoon session. The contributed papers were divided into nine parallel sessions. The allocation of these papers to scssions was done on the basis of a subject classification which the individual authors were asked to make from a comprehensive list of subject headings. This worked quite well with few people having to change auditoria during sessions. The statistics of numbers of papers offered and presented are given in Appendix 2. These contributed sessions were presided over by 81 Chairmen. Provision was made for informal colloquia to take place throughout the Congress. Intending participants were invited to make arrangements with fellow workers in other countries to hold discussions on specific topics. Sixteen colloquia of 2{ hours duration were arranged in advance and a further eight were arranged spontaneously during the Congress. This innovation proved to be quite successful although it was anticipated that more would arise spontaneously (there was provision for a further 12). A programme of technical visits was arranged during the Congress. Eleven visits were offered and the average attendance was 23. The new publication procedure recommended by the Commission was adopted for the first time at this Congress. The invited papers were printed in full as has been the normal practice. The contributed papers, however, were each printed in the form of a single page resum6. It was interesting to see that many authors were able to includeenough information to give a good summary of their paper. In spite of criticism from some participants who had become familiar with the 4 page style of previous Congresses, the general impression was that the procedure was satisfactory but that it is essential to have the volumes available two months before the Congress. (This had been planned for the 8th ICA but unavoidable delays in printing led to the last minute cancellation of these plans.) An extensive social programme was planned in addition to the standard tours of London which are available to all tourists. A Ladies' Luncheon and tour of London on the first day, after the Opening Ceremony, was very successful. Receptions on the first night gave people an early opportunity to'greet old colleagues and to meet new ones. The highlight of the social programme was a concert held in Westminster Abbey. This ended with supper in Westminster School Hall. The Congress Banquet was held on the final evening.
iii
THE INSTITUTE OF ACOUSTICS
A large Technical Exhibition was open throughout the Congress. The major manufacturers of acoustic instrumentation throughout the world exhibited their products. The Exhibition with its.adjacent bar proved to be a popular meeting place during the Congress. Three symposia were held in conjunction with the Congress. These were well supported and allowed delegates to visit a different part of the country and to spend more time on a specific topic. The official satellite symposia were "Noise in Transportation", University of Southampton, 22-23 July (300 participants), "Microwave Acoustics", University of Lancaster, 1-2 August (73 participants) and "Underwater Acoustics", University of Birmingham, I-2 August (200 participants). In addition there was a well supported meeting on "Architectural Acoustics" at Edinburgh immediately after the Congress. The registration fee for the Congress was s which included s VAT and s for morning coffees and afternoon teas. A reduced fee of s was available for bona fide students. Gifts and services donated amounted to s and in addition travel grants amounting to s were provided by a charitable foundation. The final budget has not yet been completed but the indications are that the income will be approximately equal to the expenditure. Judging from the many comments made during the Congress, the majority of participants considered that it had been a very good Congress and they had enjoyed their stay in London. B. L. CLARKSON (Chairman, Organizing Committee)
Appendix 1 : 8 1CA 1974, registration statistics: number of participants from each country Argentina Australia Austria Belgium Brazil Bulgaria Canada Czechoslovakia Denmark Finland France East Germany West Germany Greece Hong Kong Hungary India lran Iraq Irish Republic Israel Italy Japan Accompanying members: 210.
3 12 9 23 2 5 23 18 45 3 9 84 5 195 2 1 11 5 3 1 2 5 37 67
Lebanon Libya Malawi Netherlands New Zealand Northern Ireland Nigeria Norway Philippines Poland Portugal Rumania Singapore South Africa Spain Sweden Switzerland Tunisia Turkey U.K. U.S.A. U.S.S.R. Yugoslavia Zaire
1 3 1 49 4 3 1 15 1 24 1 7 1 11 12 55 17 1 1 414 223 18 13 1
iv
TIlE INSTITUTE OF ACOUSTICS
Appendix 2:8 ICA 1974, statistics of papers Titles announced (reply to 2nd Circular) Net titles at closing date complying with specified procedure Number of typescripts received at final printing deadline (6 weeks after the announced deadline) Number of papers presented orally at the Congress
983 863 717 572
THE
INSTITUTE
OF
ACOUSTICS
All enquiries should be addressed to The Secretary, Institute of Acoustics, 47 Belgrave Square, London SWIX 8QX (Telephone: 01-235 6111).
1.
MEETINGS" PROGRAMME FOR
1975
25-27 March 1975, at the University of Nottingham, Annual General Meeting and Spring Meeting. Subjects: Noise sources, Physical and medical ultrasonics, Concert hall acoustics, Intelligibility of speech, Acoustic imaging. Details from Dr V. W. Rampton, Department of Physics, University of Nottingham, Nottingham NG7 2RD. May 1975, at Mottram Hall Hotel, Manchester, a meeting on "Measurement and evaluation of aircraft noise". Details from W. A. Allen, Bickerdike/Allen/Bramble, 16 New Road, London NW3 IJA. 22 May 1975, at Bedford College, a meeting on "Measurement of acoustic power". Details from Dr A. E. Brown. June 1975, at the Engineering Institution, London, a meeting on "Vibrations in the ground and in structures". Details from Dr H. G. Leventhall, Department of Physics, Chelsea College, Pulton Place, London SW6 5PR. 23-25 September 1975, at Bangor, a meeting on "Instrumentation in oceanography", in collaboration with IERE. Details from Dr B. K. Gazey, Department of Electronic and Electrical Engineering, University of Birmingham, P.O. Box 363, Birmingham B 15 2TT. Institute of Acoustics members to be permitted to register specifically for "acoustical" session only. September 1975, in London, a meeting on "Absorption ofsound and vibration", in collaboration with materials and testing group of the Institute of Physics and the Institution of Mechanical Engineers. November 1975, at the Institute of Sound and Vibration Research, University of South: ampton, a meeting on "Railway and tracked vehicle noise". Details from Dr F. J. Fahy, Institute of Sound and Vibration Research, University of Southampton, Southampton SO9 5NH. December 1975, Location to be decided, an "Educational Meeting" in collaboration with the Association for Science Education. Details from Dr R.W.B. Stephens, Department of Physics, Chelsea College, Pulton Place, London SW6 5PR.
2. SPECIALIST GROUP ON UNDERWATER ACOUSTICS
It is proposed to form an Underwater Acoustics Group within the Institute of Acoustics. The broad aim would be to provide a platform for the exchange and the dissemination of scientific and technical information in this still expanding area of acoustics activity. To this end, it would organise general and specialist symposia and discussion meetings on various topics ofinterest to its membership. A constitution governing such groups (including financial arrangements) is being considered by the Council of the Institute of Acoustics. It would be of great help to the organisers at this stage if those interested in becoming members of this group i
ii
THE INSTITUTE OF ACOUSTICS
would write to: Dr H. O. Berktay, Department of Electronic and Electrical Engineering, University of Birmingham, P.O. Box 363, Edgbaston, Birmingham B15 2TT. Comments, suggestions and recommendations would be most welcome. 3. 8th INTERNATIONALCONGRESSON ACOUSIICS (London, July 23-31, 1974): PRELIMINARY REPORT
The eighth in this series of international congresses was the largest to date, both in the number of participants and in the number of papers presented. The theme adopted for the Congress was the timely one of Environmental Acoustics. The Opening Address and five of the eleven invited lectures were on this theme. There were 1438 participants with 210 accompanying members from 47 countries (see Appendix i). 572 papers were presented during the Congress. The Opening Ceremony was held in the Royal Albert Hall and attended by approximately 2000 people. The Congress was opened by Mr Denis Howell, M.P., The Minister of State at the Department of the Environment. The Congress President, Professor E. J. Richards, and the President of the International Commission on Acoustics also spoke at the Ceremony. These speeches were followed by the Opening Address entitled "Public Aspects of Environmental Acoustics" which was given by Dr R. H. Bolt. It was felt to be particularly appropriate that Dr Bolt should give this address on the 21st anniversary of his appearance in a similar role as first President of the International Commission at the first Congress in the series. The remainder of the Congress sessions took place in the suite of lecture rooms in Imperial College. The invited lectures were given in the Great Hall at the start of each morning and afternoon session. The contributed papers were divided into nine parallel sessions. The allocation of these papers to scssions was done on the basis of a subject classification which the individual authors were asked to make from a comprehensive list of subject headings. This worked quite well with few people having to change auditoria during sessions. The statistics of numbers of papers offered and presented are given in Appendix 2. These contributed sessions were presided over by 81 Chairmen. Provision was made for informal colloquia to take place throughout the Congress. Intending participants were invited to make arrangements with fellow workers in other countries to hold discussions on specific topics. Sixteen colloquia of 2{ hours duration were arranged in advance and a further eight were arranged spontaneously during the Congress. This innovation proved to be quite successful although it was anticipated that more would arise spontaneously (there was provision for a further 12). A programme of technical visits was arranged during the Congress. Eleven visits were offered and the average attendance was 23. The new publication procedure recommended by the Commission was adopted for the first time at this Congress. The invited papers were printed in full as has been the normal practice. The contributed papers, however, were each printed in the form of a single page resum6. It was interesting to see that many authors were able to includeenough information to give a good summary of their paper. In spite of criticism from some participants who had become familiar with the 4 page style of previous Congresses, the general impression was that the procedure was satisfactory but that it is essential to have the volumes available two months before the Congress. (This had been planned for the 8th ICA but unavoidable delays in printing led to the last minute cancellation of these plans.) An extensive social programme was planned in addition to the standard tours of London which are available to all tourists. A Ladies' Luncheon and tour of London on the first day, after the Opening Ceremony, was very successful. Receptions on the first night gave people an early opportunity to'greet old colleagues and to meet new ones. The highlight of the social programme was a concert held in Westminster Abbey. This ended with supper in Westminster School Hall. The Congress Banquet was held on the final evening.
iii
THE INSTITUTE OF ACOUSTICS
A large Technical Exhibition was open throughout the Congress. The major manufacturers of acoustic instrumentation throughout the world exhibited their products. The Exhibition with its.adjacent bar proved to be a popular meeting place during the Congress. Three symposia were held in conjunction with the Congress. These were well supported and allowed delegates to visit a different part of the country and to spend more time on a specific topic. The official satellite symposia were "Noise in Transportation", University of Southampton, 22-23 July (300 participants), "Microwave Acoustics", University of Lancaster, 1-2 August (73 participants) and "Underwater Acoustics", University of Birmingham, I-2 August (200 participants). In addition there was a well supported meeting on "Architectural Acoustics" at Edinburgh immediately after the Congress. The registration fee for the Congress was s which included s VAT and s for morning coffees and afternoon teas. A reduced fee of s was available for bona fide students. Gifts and services donated amounted to s and in addition travel grants amounting to s were provided by a charitable foundation. The final budget has not yet been completed but the indications are that the income will be approximately equal to the expenditure. Judging from the many comments made during the Congress, the majority of participants considered that it had been a very good Congress and they had enjoyed their stay in London. B. L. CLARKSON (Chairman, Organizing Committee)
Appendix 1 : 8 1CA 1974, registration statistics: number of participants from each country Argentina Australia Austria Belgium Brazil Bulgaria Canada Czechoslovakia Denmark Finland France East Germany West Germany Greece Hong Kong Hungary India lran Iraq Irish Republic Israel Italy Japan Accompanying members: 210.
3 12 9 23 2 5 23 18 45 3 9 84 5 195 2 1 11 5 3 1 2 5 37 67
Lebanon Libya Malawi Netherlands New Zealand Northern Ireland Nigeria Norway Philippines Poland Portugal Rumania Singapore South Africa Spain Sweden Switzerland Tunisia Turkey U.K. U.S.A. U.S.S.R. Yugoslavia Zaire
1 3 1 49 4 3 1 15 1 24 1 7 1 11 12 55 17 1 1 414 223 18 13 1
iv
TIlE INSTITUTE OF ACOUSTICS
Appendix 2:8 ICA 1974, statistics of papers Titles announced (reply to 2nd Circular) Net titles at closing date complying with specified procedure Number of typescripts received at final printing deadline (6 weeks after the announced deadline) Number of papers presented orally at the Congress
983 863 717 572