TDA7418 Datasheet, PDF (13/29 Pages) STMicroelectronics – 3 Band car audio procesor

TDA7418
Description of the audioprocessor
selected and an undesired mute would appear at the outputs. For such applications, it can
be switched in the AutoZero-Remain-Mode (Bit 6 of the subaddress-byte). If this bit is set to
high, the AutoZero will not be invoked and the old adjustment-value remains.
4.3
4.3.1
Loudness
There are four parameters programmable in the loudness stage:
Attenuation
Figure 4 shows the attenuation as a function of frequency at f_C = 400Hz
Figure 4. Loudness Attenuation @ f_C = 400Hz.
4.3.2
Peak frequency
Figure 5 shows the four possible peak-frequencies at 400, 800 and 2400Hz
Figure 5. Loudness Center frequencies @ Attn. = 15dB
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