sta381bws STMicroelectronics, sta381bws Datasheet - Page 27

• Manufacturer Part Number: sta381bws
• Description: Sound Terminal 2.1-channel High-efficiency Digital Audio System Sound Terminal 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

STA381BWS
●
Figure 6.
●
Figure 7.
R
L
2.0 output with B
divide the channel into two sub-bands, then each sub-band is independently processed
by a DRC block. The two bands are then re-composed and fed to the following
processing blocks. The crossover frequency is user-selectable. This configuration and
features ensure the backward compatibility with the previous Sound Terminal
products. For further information please refer to
2.1 output with STCompressor
of-the-art multi-band dynamic, range compressor, called STCompressor
using this configuration, up to 10 biquad filters are available for dedicated processing.
Please refer to the
feature.
L
R
Processing path, second part: 2.0 output with B
Processing path, second part: 2.1 output configuration with
STCompressor
Mix Coefficients
User-Defined
C1Mx1
C1Mx2
C2Mx1
C2Mx2
C3Mx1
C3Mx2
2
+
+
+
Mix Coefficients
DRC
User-Defined
Section 4.3: STCompressorTM
C1Mx1
C1Mx2
C2Mx1
C2Mx2
C3Mx1
C3Mx2
+
+
+
(Figure
Determined by XO Setting
TM
Crossover Frequency
Doc ID 018937 Rev 2
Determined by XO Setting
(User Defined If
Crossover Frequency
Hi-pass XO
Hi-pass XO
(User Defined If
XO=0000)
Low-pass XO
B
B
Hi-pass XO
Hi-pass XO
Channel ½
--------------
Channel ½
--------------
Channel 3
--------------
Biquad #8
Biquad #8
Biquad #8
XO=0000)
2
filter
2
filter
DRC
DRC
Filter
Filter
filter
TM
6): the mixer and the eighth biquadratic filter are used to
(Figure
-
- +
+
STCompressor
STCompressor
7): the STA381BWS embeds the latest, state-
Channel 3
Channel 1
Channel 2
Channel 3
Volume
Volume
Volume
Volume
Chapter 6.11.1: Dual-band
Volume
Volume
Volume
Limiter
Limiter
Limiter
And
And
And
for further information about this
DRC 2
DRC 1
DRC 1
DRC 2
2
DC Cut
DC Cut
DC Cut
Filter
Filter
DRC
+
+
Filter
DC Cut
DC Cut
Filter
Filter
Device overview
Post Scale
Post Scale
Post Scale
TM
Post Scale
Post Scale
. When
DRC.
®
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