4aAA9. Effects of an audience and variable architectural features on the acoustics of Boettcher Concert Hall.

Session: Thursday Morning, June 19

Author: Gary Madaras
Location: Jaffe Holden Scarbrough Acoust., Inc., 114A Washington St., Norwalk, CT 06854
Author: John S. Bradley
Location: IRC, Natl. Res. Council, Ottawa K1A 0R6, Canada
Author: Christopher Jaffe
Location: Jaffe Holden Scarbrough Acoust., Inc., Norwalk, CT 06854


Acoustic parameters (including reverberation time, early decay time, relative sound level, early to late sound ratios, lateral energy fraction, and interaural cross correlation) have been measured in Boettcher Concert Hall. All parameters were measured using different settings of variable architectural features such as acoustic drapes, variable height overhead stage reflectors, and movable stage towers. The monaural parameters were also measured with and without an audience. The effects of the variable features on the acoustic parameters are assessed. The effects of the audience on some of the acoustic parameters have been estimated using standard calculation methods. Calculated differences are compared to those actually measured in the hall. [Work supported by the Concert Hall Research Group.]

ASA 133rd meeting - Penn State, June 1997