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TDA7404D 数据表(PDF) 20 Page - STMicroelectronics |
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TDA7404D 数据表(HTML) 20 Page - STMicroelectronics |
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20 / 35 page ![]() Description of functionality TDA7404 20/35 4.8 Treble There are two parameters programmable in the treble stage: 4.8.1 Attenuation Figure 14 shows the attenuation as a function of frequency at a center frequency of 17.5 kHz. Figure 14. Treble control @ fC = 17.5kHz 4.8.2 Center frequency Figure 15 shows the four possible center frequencies 10 k, 12.5 k, 15 k and 17.5 kHz. Figure 15. Treble center frequencies @ Gain = 15 dB -2 0 -1 5 -1 0 -5 0 5 10 15 20 10 100 1K 10K -5 0 5 10 15 20 10 100 1K 10K |
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