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TDA7719 数据表(PDF) 23 Page - STMicroelectronics |
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TDA7719 数据表(HTML) 23 Page - STMicroelectronics |
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23 / 45 page ![]() TDA7719 Description 23/45 4.8.2 Treble center frequency Figure 17 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz. Figure 17. Treble center frequencies @ gain = 14dB 4.9 Subwoofer Filter The subwoofer lowpass filter has Butterworth characteristics with programmable cut-off frequency (80 / 120 / 160Hz). The output phase can be selected between 0deg and 180deg. The input of subwoofer takes signal from bass filter output or output of input mux. Figure 18. Subwoofer control |
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