STA333BW datasheet(47/64 Pages) STMICROELECTRONICS

tên linh kiện	STA333BW

Giải thích chi tiết về linh kiện	2.1-channel high-efficiency digital audio system

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STA333BW

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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

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

STA333BW bảng dữ liệu(PDF) 47 Page - STMicroelectronics