ASA 125th Meeting Ottawa 1993 May

2aAA4. Recent experiences with binaural measurement techniques in the evaluation of concert hall acoustics.

J. Christopher Jaffe

Mahlon D. Burkhard

Sonic Perceptions, 28 Knight St., Norwalk, CT 06851

Paul H. Scarbrough

Jaffe Holden Scarbrough Acoustics, 114A Washington St., Norwalk, CT 06854

Binaural recording, measurement, and analysis techniques have been significantly improved over the past decade. The coupling of modern binaural recording heads with advanced computer-based signal processing and analysis equipment offers acoustical designers a valuable tool for use in both subjective and objective evaluation of concert hall acoustics. The authors will describe recent experiences in the use of binaural technology for such evaluations, focusing on specific examples of how the technology can be used to improve our understanding of the acoustical environment of these spaces. The specific halls that were studied include a 2300-seat multiple-use auditorium built in the late 1960's, an existing theatre that was converted into a 1900-seat symphony concert hall in the mid-1980's, and a 2700-seat symphony concert hall reconstructed in the mid-1970's.