Description of the audioprocessor TDA7418
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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.
