Operating Manual - nX, nXe, and nXp 150W/75W Power Amplifiers
24
Pluggable DSP Block Descriptions
1) Dynamics Controls
Limiter
The limiter is a compressor with a fixed infinite ratio. Use a limiter
to absolutely prevent signal from exceeding a designated peak level.
The limiter function allows for threshold, attack time and release time
adjustments. It also offers link group assignment for linking to another
channel's limiter, so that action on one channel affects all linked chan
-
nels. For a more natural sounding gain reduction that allows some
signal above threshold, use the compressor function.
Parameters:
Threshold
-
The signal level at which the limiter begins to apply gain
reduction to the signal. Threshold range is -20dBu to +20dBu.
Ratio
-
The amount of gain reduction applied to signal above threshold.
Fixed at infinite, there is 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.
Link Group
- Group to which all parameters are assigned, for simul
-
taneous adjustment to multiple limiters
Show Meter On Graph Checkbox
- Overlays the input/output level meters on the limiter graphical display.
Detector Type
- Fixed at peak detect for the limiter.
Compressor
The compressor function allows for user-adjustable threshold, ratio,
attack time, release time and detector type. The compressor also offers
link group assignment for linking to another channel's compressor, so
that action on one channel affects all linked channels. 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 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.
