17
Table 3: 1CH MODE Second Stage Factory Presets
Parameter
Preset Value
Filter Size
512 taps
Prediction Span Delay
2 samples
Adapt Rate
32
Adapt Mode
Auto
Output
Residue
Algorithm
LMS
Crash Detect
Enabled
Next, the signal is 200Hz Highpass filtered, to remove any low frequency noises that may remain
after processing, and 3200Hz Lowpass filtered to remove high frequency hiss.
Finally, a 10dB AGC is applied to correct for near party / far party talkers, and to provide a good
output level for recording.
2CH MODE:
Notice that in
2CH
MODE, both the
LEFT (PRI)
and
RIGHT (REF)
inputs get fed into the processor.
The
LEFT (PRI)
input is the signal from which interfering audio is to be removed, usually originating
Figure 4: 2CH MODE Block Diagram
