參數(shù)資料
型號: TDA7417TR
廠商: 意法半導(dǎo)體
英文描述: Car radio audio processor
中文描述: 汽車收音機音頻處理器
文件頁數(shù): 15/34頁
文件大小: 347K
代理商: TDA7417TR
TDA7417
Description of the audioprocessor
15/34
4.3.3
Low & high frequency boost
Figure 6
shows the different Loudness shapes in low & high frequency boost.
Figure 6.
Loudness Attenuation, f
c
=2.4kHz
4.3.4
Flat Mode
In flat mode the loudness stage works as a 0dB to -15dB attenuator.
4.4
SoftMute
The digitally controlled Softmute stage allows muting/demuting the signal with a I2C-bus
programmable slope. The mute process can be activated by the I
2
C-bus. This slope is
realized in a special S-shaped curve to mute slow in the critical regions (see
Figure 7
).
Figure 7.
Softmute-Timing
Note:
Please notice that a started Mute-action is always terminated and could not be interrupted
by a change of the mute -signal
SOFT MUTE
+SIGNAL
REF
-SIGNAL
Time
AC00061
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