Measurements of the noise produced by a small office machine

Abstract Measurements of the overall noise level, and of the noise produced by a small office machine in 1 3 octave bands from 100 to 12,500 Hz were made in the Liverpool University reverberation room. The noise produced on the A scale was also measured. From the measurements, the A scale level and the frequency spectrum of the noise expected in a typical 1000 ft3 room with a reverberation time of 1 2 sec were determined. The acoustic power of the machine was also calculated.