Linear Acoustic AERO.qc User Manual page 53

Audio quality controller with optional hd/sd-sdi and dolby decoding
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Linear Acoustic AERO.qc User Guide
Multiband Limiters
Performs multiband limiting of the signals coming from the multiband compressor.
Multiband EQ
This is the section where each of the processing bands is summed and where overall fre-
quency response can be tailored.
Final Stage
This final section of the processor is where the final look ahead peak limiter and bass soft
clipper are adjusted. The look ahead limiters are wideband, limited to 6dB of gain reduc-
tion, are extremely fast, and due to their look-ahead nature are virtually transparent even
at full gain reduction. Their purpose is to control peaks that make it through the multiband
section. Adjustable parameters are:
-Gating sets the point at which the multiband AGC release time is made ex-
tremely slow to prevent unnecessarily increasing background noise and allow
the AGC to return to unity gain.
• MB Freeze Thresh(old): 0dBFS to -90dBFS
-Freeze stops all multiband gain change (i.e. when the audio drops to silence),
and remains frozen at its current gain value until the threshold is exceeded.
• B1 - B5 Lim(it) Thresh(old): +12.00dB - 0.00dB
-The point above which limiting action takes place at an Infinity:1 ratio.
• B1 Soft Clip Thresh(old): +12.00dB - 0.00dB
-The point above which band one (low bass) is soft clipped. This helps main-
tain a "tight" bass sound.
• B1 - B5 Out(put) Mix: -12dB - + 12dB
-Sets the mix level for each band summing all bands back together. These con-
trols are prior to the final look ahead limiter and increasing gain may cause
more final limiting (possibly more than desired)
Presets & Processing Adjustment
49

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