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STA382BW 데이터시트(PDF) 35 Page - STMicroelectronics

부품명 STA382BW
상세설명  Sound Terminal® 2.1-channel high-efficiency digital audio system
PDF  172 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA382BW 데이터시트(HTML) 35 Page - STMicroelectronics

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STA382BW
Device overview
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4.3.7
Offset
The offset is a user-selectable gain or volume control. When using the STC it is advised to
use the offset to tune the output volume instead of the regular volume controls. The offset is
located before the attenuator block, ensuring that the output power limit (limiter threshold) is
never exceeded (Figure 12). On the other side, the traditional volume control is located after
the STC attenuator, thus a wrong setting of this control could nullify the STC effect.
Each sub-band has its own and independent offset. Its range is [0, +48] dB with a 0.25 dB
step (Table 12).
Figure 12.
Offset effect
4.3.8
Stereo link
The stereo link feature allows applying the same attenuation to the corresponding band of
each channel (i.e. band 0 left channel and band 0 right or band 1 left channel and band 1
right channel). This should help to prevent image shifting that could occur when individually
compressing each channel and causing a volume mismatch between left and right.
When the stereo link is active, the proper attenuation for each band is independently
computed, then the highest one for each band is applied (Figure 13).



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