TDA7460ND
Description of the audio processor part
4.2.1
Loudness
There are four parameters programmable in the loudness stage (see Figure 5., Figure 6.
and Figure 7.):
● Attenuation
● Center Frequency
● Loudness Q
Flat Mode: in this mode the loudness stage works as a 0 - 15 dB attenuator.
Figure 5. Loudness attenuation @ fc = 400 Hz (second order)
0.0
) -5.0
t(s -10.0
duc -15.0
ro -20.0
P 10.0
100.0
1.0K
10.0K
lete Figure 6. Loudness center frequency @ Attn. = 15 dB (second order)
o 0.0
bs -5.0
) - O -10.0
t(s-15.0
uc -20.0
d 10.0
100.0
1.0K
10.0K
Pro Figure 7. Loudness @ attn. = 15 dB, fc = 400 Hz
te (dB)
D98AU844
Obsole -5
-10
-15
-20
10
100
1,000
Hz
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