TDA7417 Datasheet, PDF (18/34 Pages) STMicroelectronics – Car radio audio processor

Description of the audioprocessor
4.6.3
Quality Factors
Figure 11 shows the four possible quality factors 1, 1.25, 1.5 and 2.
Figure 11. Bass Quality factors @ Gain = 14dB, f_C = 80Hz
TDA7417
4.6.4
DC Mode
It is used for cut only for shelving filter. In this mode the DC-gain is increased by 4.4dB. In
addition the programmed center frequency and quality factor is decreased by 25% which
can be used to reach alternative center frequencies or quality factors. Figure 12 shows DC
mode.
Figure 12. Bass normal and DC Mode @ Gain = 14dB, f_c = 80Hz
Note: The center frequency, Q and DC-mode can be set fully independently.
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