ISO 9295:1988 (ECMA-108)
Acoustics -- Measurement of high-frequency noise emitted by computer and business equipment
This standard has been revised by ISO 9295:2015.
Specifies four methods for the determination of sound power levels in the frequency range between 11,2 kHz and 22,4 kHz with the centre frequency of 16 kHz. The first three methods are based on the reverberation room technique, the fourth on a free field over a reflecting plane.