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STV8207 数据表(PDF) 32 Page - STMicroelectronics |
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STV8207 数据表(HTML) 32 Page - STMicroelectronics |
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32 / 149 page ![]() Dedicated Digital Signal Processor (DSP) STV82x7 32/149 4.6.4 Bass Management Configuration 3 The third configuration, shown in Figure 16, assumes that all speakers except the center are full range, then all bass information will be directed to and reproduced by the front left and front right and both surround speakers. In order to provide more flexibility to this configuration, a switch will offer an option which will produce a subwoofer channel by the LFE channel. When the Subwoofer Switch is OFF, the input channels will be attenuated by 8 dB. Configuration 3 is required in certain high-end products. Figure 16: Bass Management Configuration 3 (all switches indicate their reset state) C L R Ls Rs L C R Ls Rs SubW LFE -4dB -4.5dB + + + + -8dB -4dB -8dB -4dB -8dB -4dB -8dB -4dB -8dB -4dB -8dB + + +10dB +8dB +4dB +8dB +4dB +8dB +4dB +8dB +4dB +8dB +4dB Subwoofer ON Switch Subwoofer ON Switch Level Adjustment OFF Switch |
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