TDA7416_11 Datasheet, PDF (20/37 Pages) STMicroelectronics – Car radio signal processor

Description of the audio processor part
TDA7416
4.7.5
DC-mode of equalizer band 1 (62/100 Hz)
In this mode, the DC-gain 4dB when set to 15dB boost.
Figure 13. EQ band1, normal- and DC-mode @ boost = 15 dB, f_Center = 62 Hz





D"








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1. The center frequency, Q, DC-mode and boost/cut can be set fully independently for each filter.
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4.8
Subwoofer application
Figure 14. Subwoofer application with low-pass @ 80/120/160Hz and high-pass @
90/135/180Hz



D"





+
(Z
+
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Both filters, the low-pass as well as the high-pass filter, have butterworth characteristic so
that their cut-off frequencies are not equal but shifted by the factor 1.125 to get a flat
frequency response.
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Doc ID 9837 Rev 2