SR EN ISO 7779:2011

Acoustics -- Measurement of airborne noise emitted by information technology and telecommunications equipment

ISO 7779:2010 specifies procedures for measuring and reporting the noise emission of information technology and telecommunications equipment. The basic emission quantity is the A-weighted sound power level which may be used for comparing equipment of the same type but from different manufacturers, or for comparing different equipment. Three basic noise emission standards for determination of the sound power levels are specified in ISO 7779:2010 in order to avoid undue restriction on existing facilities and experience. ISO 3741 specifies comparison measurements in a reverberation test room; ISO 3744 and ISO 3745 specify measurements in an essentially free field over a reflecting plane. Any one of these three basic noise emission standards can be selected and used exclusively in accordance with ISO 7779:2010 when determining sound power levels of a machine. The A-weighted sound power level is supplemented by the A-weighted emission sound pressure level determined at the operator position(s) or the bystander positions, based on basic noise emission standard ISO 11201. This sound

56.29

Status : Withdrawn
Approval date : 3/31/2011
Withdrawal date : 5/31/2019
Number of pages : 72
ICS : 17.140.20 Noise emitted by machines and equipment,35.020 Information technology (IT) in general
Technical Committee : 274 - Human protection against noise and mechanical vibration

Relations with other standards: