Description of the audioprocessor

TDA7417

18/34

4.6.3

Quality Factors

Figure 11 shows the four possible quality factors 1, 1.25, 1.5 and 2.

Figure 11.

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.

Note: The center frequency, Q and DC-mode can be set fully independently.