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TDA7720B Arkusz danych(PDF) 17 Page - STMicroelectronics

Numer części TDA7720B
Szczegółowy opis  3 band car audio processor
PDF  42 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7720B Arkusz danych(HTML) 17 Page - STMicroelectronics

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TDA7720B
Description of audioprocessor
4.5
Volume
When the volume-level is changed audible clicks could appear at the output. The root cause
of those clicks could either be a DC-offset before the volume-stage or the sudden change of
the envelope of the audio signal. With the soft-step-feature both kinds of clicks could be
reduced to a minimum and are no more audible. The blend-time from one step to the next is
programmable as 5 ms or 10 ms. The soft-step control is described in detail in Section 4.1.1.
4.6
Bass
There are four parameters programmable in the bass stage.
4.6.1
Bass attenuation
Figure 7 shows the attenuation as a function of frequency at a center frequency of 80 Hz.
Figure 7. Bass control @ fc = 80 Hz, Q = 1



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