Methods for determining the A-weighted sound power levels based on measurements in reverberant rooms or in free-field conditions over a reflecting plane, and A-weighted sound pressure levels at the operator or bystander positions.
BS 7135-1:1989
Original price was: $350.52.$175.00Current price is: $175.00.
Noise emitted by computer and business equipment-Method of measurement of airborne noise
BSI Group , 08/31/1989
Pages: 46
