Title :
Active power minimization of a sound source in a reverberant space
Author :
Tohyam, Mikio ; Suzuki, Akim ; Sugiyama, Kiyoshi
Author_Institution :
Human Interface Lab., NTT, Tokyo, Japan
Abstract :
Sound power output from a source can be reduced in a closed space by using secondary sources. The minimum power response (MPR) from sound sources is analyzed based on the modal theory. It is shown that the MPR can be approximately described using the modal overlap properties. The power reduction is confirmed experimentally for a pure tone source in a large reverberation room. The corner method for sensor location is also discussed
Keywords :
acoustic radiators; acoustic signal processing; architectural acoustics; reverberation; acoustic signal processing; active sound control; corner method; minimum power response; modal theory; reverberant space; reverberation room; room acoustics; secondary sources; sensor location; sound source; Acoustic sensors; Frequency; Humans; Laboratories; Linear predictive coding; Minimization methods; Position measurement; Resonance; Reverberation; Wave functions;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266860
