Sound power radiated by sources in difhse field

摘要

Sound power radiated by sources at low frequency notoriously depends on source position. Wesampled the sound field of a rectangular room at 18 microphone and 4 source positions. Averagepower spectra were extrapolated from the reverberant field, taking into account the frequencydependent reverberation times. They reveal fluctuations that depend on source position and extendfar above Schroeder frequency.