Technical data

17
BASICS – Audio Filter
Audio Filter
The audio lter is placed behind the compressor in order to avoid unwanted inuences on the
detection circuit of the dynamic section.
If the EQ gain controller is turned hard right, the signal rates above the selected center frequency
will be boosted by 3 dB and the part below the center frequency will be cut by 5 dB [Fig. A]. Turn-
ing the controller hard left reverses the eect: Below the center frequency there is a boost and
above it there is a cut [Fig. B].
The EQ frequency controller comprehends an array from 20 Hz - 2 kHz which can be shifted to 200
Hz - 20 kHz by pushing the x10 button.
In linked M/S mode as explained above it is possible to make dierent settings with the audio
lters in the M and the S band. Again, the results can be listened to separately by using the com-
pressed switches for each channel. However, in stereo mode, both audio lters should be set to
the same values in order to avoid unwanted shifts in the stereo spectrum.
Note: Depending on the settings of the audio lters it might be necessary to adapt the volume
with the gain controllers.
Soft Clip
Gain Reduction
M/S Mode Active Channel Link
Mix
Gain
EQ Freq
Hz
SC Gain
dB
SC Freq
EQ Gain
Auto Fast
Feed Forward
On
Auto Fast
x10
On
Transformer
Direct
Compressed
On
Thresh Attack Release Ratio
Soft Clip
Mix
Gain
EQ Freq
SC Gain
dB
EQ Gain
Auto Fast
Feed Forward
On
Auto Fast
x10
On
Transformer
Direct
Compressed
On
Thresh
Attack
ms
Release
ms
Ratio
1:X
Soft Clip
SC Freq
Center Frequency
+
Gain
-
A
Left
Input
Compressor
Audio
Filter
Left
Output
Right
Input
Compressor
Sidechain
Audio
Filter
Right
Output
M/S Encoder
S
M
Gain
Stage
L
R
M/S Decoder
Gain
Stage
Center Frequency
+
Gain
-
B