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STA333BW Fiches technique(PDF) 47 Page - STMicroelectronics |
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STA333BW Fiches technique(HTML) 47 Page - STMicroelectronics |
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47 / 64 page ![]() STA333BW Register description 47/64 The release of limiter, when the gain is again increased, is dependent on a RMS-detect algorithm. The output of the volume/limiter block is passed through a RMS filter. The output of this filter is compared to the release threshold, determined by the Release Threshold register. When the RMS filter output falls below the release threshold, the gain is again increased at a rate dependent upon the Release Rate register. The gain can never be increased past it's set value and therefore the release only occurs if the limiter has already reduced the gain. The release threshold value can be used to set what is effectively a minimum dynamic range, this is helpful as over-limiting can reduce the dynamic range to virtually zero and cause program material to sound “lifeless”. In AC mode, the attack and release thresholds are set relative to full-scale. In DRC mode, the attack threshold is set relative to the maximum volume setting of the channels mapped to that limiter and the release threshold is set relative to the maximum volume setting plus the attack threshold. Figure 18. Basic limiter and volume flow diagram |
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