20 Audio Measurements
Weighting Curves
The French CCIR 468–4 is universally adopted for measurements of noise in audio systems. It is shown in Figure 113. The ‘unweighted’ response curve is needed to avoid the effects of inaudible components which may be present. The A-weighting curve using similar scales is shown in Figure 114 for comparison. The tables give precise values and tolerances.
Figure 113 CCIR 468–4 noise weighting curves
Figure 114 A weighting curve (IEC179)
The use of Special dB Suffices in Audio Engineering
Note: A suffix ...
Get Sound Engineer's Pocket Book, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
