ASA 125th Meeting Ottawa 1993 May

1aAA7. Statistical relations among architectural features and objective acoustical measurements of concert halls.

Gary W. Siebein

Wei-hwa Chiang

Gary S. Madaras

Harold W. Doddington

Wilhelm K. Schwab

Architecture Technol. Res. Ctr., Univ. of Florida, 231 ARCH, Gainesville, FL 32611-2004

John S. Bradley

Natl. Res. Council, Ottawa, ON K1A 0R6, Canada

A. C. Gade

Danish Tech. Univ., Lyngby, DK 28000, Denmark

A statistical analysis of architectural features and detailed objective acoustical measurements made in eight concert halls and several multi-use rooms in their concert configuration will be presented. A method for evaluating the architectural features of rooms that affect their acoustical properties was developed. Architectural features of interest include both room average values and more-detailed subdivisions of surfaces including shape, volume, height, width, and sound absorption properties of materials. Regression modeling was performed for individual source--receiver paths as well as for entire rooms. Measurements data from all three teams were used in the models to assess the sensitivity of the models to expect variations in measurements. The results were compared to the previous work of Barron, Gade, and Hook among others. [Work supported by the National Science Foundation and Concert Hall Research Group.]