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TDA7412 数据表(PDF) 13 Page - STMicroelectronics |
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TDA7412 数据表(HTML) 13 Page - STMicroelectronics |
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13 / 56 page  13/56 TDA7412 1.4 Loudness There are four parameters programmable in the loudness stage: 1.4.1 Attenuation Figure 2 shows the attenuation as a function of frequency at fP = 400Hz Figure 2. Loudness Attenuation @ fP = 400Hz. 1.4.2 Peak Frequency Figure 3 shows the four possible peak-frequencies at 200, 400, 600 and 800HzFigure 3: Loudness Center fre- quencies @ Attn. = 15dB Figure 3. Loudness Center frequencies @ Attn. = 15dB. dB Hz -25.0 -20.0 -15.0 -10.0 -5.0 0.0 10.0 100.0 1.0K 10.0K dB Hz -20.0 -15.0 -10.0 -5.0 0.0 10.0 100.0 1.0K 10.0K |
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