Provides the specification of preferred frequencies, band centre frequencies, and frequency labels which form a geometric series for acoustical measurements. These preferred frequencies should also be used as geometric centre frequencies for acoustic band measurements.
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AS 3584-1991
$39.00 $79.00
AS 3951.5-1991
$55.00 $111.00
AS 2192-1991
$29.00 $58.00
AS 2423-1991
$25.00 $50.00









