GUIDELINES FOR DETERMINATION OF AVERAGE SOUND POWER RADIATED BY DISCRETE-FREQUENCY SOURCES IN A REVERBERATION ROOM

Experimental results are reported on the determination of the sound power produced by a single discrete-frequency tone in a reverberant environment, contrary to the general recommendations in ANS Standard Sl. 2-1962. It is shown that such measurements can be made if the effect of the reverberant room on the measurements and on the source are understood and accounted for. Data are given relevant to both the microphone path length required for determining the average pressure in the room and the variations of sound-power output with source position in the room.