STV8247_06 Datasheet, PDF (32/156 Pages) STMicroelectronics – Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

Dedicated Digital Signal Processor (DSP)
STV82x7
4.6.2 Bass Management Configuration 1
Configuration 1, shown in Figure 15, assumes that all five speakers are not full range and that all of
the bass information will be redirected to and reproduced by a single subwoofer. This configuration
is intended for use with 5 satellite speakers.
To prevent signal overload, the five main channels are attenuated by 15 dB, while the LFE channel
is attenuated by 5 dB to maintain the proper mixing ratio.
Figure 15: Bass Management Configuration 1 (with Pro Logic switch indicating its reset state)
L
L
R
R
C
Ls
Rs
LFE
Pro Logic
OFF Switch
-5 dB
-15 dB
+
C
Ls
Rs
SubW
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