TDA7418 Datasheet, PDF (16/29 Pages) STMicroelectronics – 3 Band car audio procesor

Description of the audioprocessor
TDA7418
4.6.2
Center frequency
Figure 10 shows the four possible center frequencies 60, 80, 100 and 200Hz.
Figure 10. Bass center Frequencies @ Gain = 15dB, Q = 1
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
4.6.4
DC mode
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. Bass normal and DC Mode @ Gain = 14dB, f_C = 80Hz
1. The center frequency, Q and DC-mode can be set fully independently.
16/29