This International Standard applies to computer and business equipment.
This International Standard specifies
— the method for determining the declared noise emission values;
— acoustical and product information to be given in tech-nical documents supplied to users by the manufacturer;
— the method for verifying the declared noise emission values given by the manufacturers.
The uniform methods in this International Standard use the noise data obtained in accordance with ISO 7779 and the pro-cedures specified in ISO 4871 and ISO 7574.
The basic declared noise emission values are the declared A-weighted sound power level, LwAd (a statistical maximum value corresponding to Lc in ISO 7574), and the declared A-weighted sound pressure level, LpAm (a mean value), at the operator or bystander positions.