Acoustics. Measurement of high-frequency noise emitted by computer and business equipment.

Main informations

Collections

National standards and national normative documents

Publication date

February 1992

Number of pages

15 p.

Reference

NF EN 29295

ICS Codes

17.140.20 Noise emitted by machines and equipment

35.020 Information technology (IT) in general

35.260 Office machines

Classification index

S31-111

Print number

1 - 01/02/1992

International kinship

ISO 9295:1988

European kinship

EN 29295:1991

Standard replaced by (1)

NF EN ISO 9295

July 2015

Standard Current

Acoustics - Determination of high-frequency sound power levels emitted by machinery and equipment

ISO 9295:2015 specifies four methods for the determination of the sound power levels of high-frequency noise emitted by machinery and equipment in the frequency range covered by the octave band centred at 16 kHz, which includes frequencies between 11,2 kHz and 22,4 kHz. They are complementary to the methods described in ISO 3741 and ISO 3744. The first three methods are based on the reverberation test room technique. The fourth method makes use of a free field over a reflecting plane. The test conditions which prescribe the installation and operation of the equipment are those specified in ISO 3741 or ISO 3744 as applicable.

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