Auditory demonstrations

A.J.M. Houtsma, Th.D. Rossing, W.M. Wagemakers

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In 1978, a set of auditory demonstration tapes was released by the Laboratory of Psychophysics of Harvard University. These demonstrations had been prepared by a team led by Prof. David M. Green and were sponsored by a grant from the National Science Foundation. The tape set, which contained 20 recorded demonstrations on psychoacoustics plus an explanatory booklet, became so popular that all copies were quickly distributed and tape sets were no longer available. In 1984, the Acoustical Society of America's Committee on Education in Acoustics requested T.D. Rossing and W.D. Ward to look into the feasibility of re-issuing the "Harvard tapes". A decision was made to update the demonstration material and to issue it on a high-quality sound reproduction medium. The Institute for Perception Research (!PO) in Eindhoven was engaged to produce the audio material. Both the Eindhoven University of Technology and the Philips Company, the joint sponsors of IPO, made manpower available for the project. Philips Polygram and Philips & Dupont Optical Co. (PDO) agreed to handle the digital tape mastering and the production of a Compact Disc. Northern Illinois University supported the project through a grant for improvement of undergraduate education. The Acoustical Society of America agreed to provide further financial backing for the project. Many people in the United States and Europe have contributed to the realization of this project. A preliminary scenario by T.D. Rossing was developed through frequent discussions with A.J.M. Houtsma and W.M. Wagenaars, who composed and synthesized the audio material with 16-bit digital techniques. Th. de Jong of IPO provided invaluable techical assistance. The narration by Prof. Ira J. Hirsh was recorded at the Cerntral Institute for the Deaf in Saint Louis. Speech samples in Demonstrations 4 and 35 were provided by, respectively, J. 't Hart and Dr. Sanford Fidel!. The instrumental scales of Demonstration 30 were played by bassoonist B. van den Brink of the Brabant Orchestra. The text booklet ("libretto") was written by T .D. Rossing and A.J .M. Houtsma. A trial version of the demonstrations was field-tested and critically reviewed by D.E. Hall, W.M. Hartmann and W.D. Ward, which led to substantial improvements. Special thanks go to the IPO director H. Bouma, to G. van Hoeyen of Philips Polygram, and to A. Rehnberg and G..J.A. Vogelaar of PDO for their enthusiastic administrative and technical support. The 39 demonstrations on this compact disc have been put on separate tracks. Each demonstration can easily be found by cueing the CD player to the desired number. On CD players which allow indexing, parts of demonstrations can be reached individually. Demonstrations in Sections I through VI have been designed for typical classroom use. The demonstrations of Section VII must be heard through headphones to obtain the desired effects.
Original languageEnglish
Place of PublicationEindhoven
PublisherTechnische Universiteit Eindhoven, Institute for Perception Research
Media of outputCD
Publication statusPublished - 1987

Bibliographical note

Demonstraties op CD (1126-061)


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