Ashly mXa-1502 12-Channel 4-Zone DSP Mixer-Amplifier - Manual (Page 13)

Brick Wall Limiter Parameters:
Threshold
- The signal level at which the limiter
begins to apply gain reduction to the signal.
Threshold range is -20dBu to +20dBu.
Ratio - There is no ratio control, ratio is fixed at
infinite. No signal increase above threshold.
Attack Time - The rate in mS/dB that gain
reduction occurs after the signal level crosses
threshold.
Release Time - The rate in mS/dB that any
gain reduction stops after the signal level drops
below threshold.
Detector Type - The detector type is fixed at
peak detect for the brick wall limiter
Compressor
The compressor function allows for user-
adjustable threshold, ratio, attack time, release
time and detector type.
An attenuation bus assignment is provided
to allow multiple limiters to force their gain
reductions to track each other, ie for stereo
signals. For peak limiting with infinite ratio, use
the brick wall limiter function.
Parameters:
Threshold - The signal level at which the
compressor begins to apply gain reduction
to the signal. Threshold range is -20dBu to
+20dBu.
Ratio - The amount of gain reduction applied to
signal level above threshold. Range is 1.2:1 to
infinite.
Attack Time - The rate in mS/dB that gain
reduction occurs after the signal level crosses
threshold.
Release Time - The rate in mS/dB that any
gain reduction stops after the signal level drops
below threshold.
Attenuation Bus - All compressors assigned to
the same attenuation bus will apply the largest
amount of gain reduction from any one of the
assigned compressors. This is typically used for
tracking compression across stereo signals.
The brick wall limiter is a compressor with a fixed
infinite ratio. Use a brick wall limiter to prevent
signal from exceeding a designated peak level.
The limiter function allows for threshold, attack
time and release time adjustments.
For a more natural sounding gain reduction that
allows some signal above threshold, use the
compressor function.
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mXa-1502 • Operating Manual Ashly AquaControl™ Software