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9.5 Output processing
The processing available for each audio output channel is the following:
1
Volume, Mute, polarity inversion and delay
(up to 1 second, displayed in units of
time or distance) controls. Also included are 2 level meters ("pre-processing" and
"post-processing")
for
the
output
channel.
With SELECT, choose the signal source for each output channel, between NONE,
IN1, IN2, IN1+IN2 (mono mix from a stereo source) or GEN (internal signal
generator).
AMP GAIN allows you to set the gain of the amplifier that will work with the
ALMA24/ALMAcard device. This parameter is critical for the compressor/limiter to
process correctly the signal, in order not to exceed a certain level and/or to protect
the installation speaker systems.
2
CROSSOVER, or low-pass and high-pass filters
to define a frequency range to
work on amongst the entire audible spectrum. Available filter types are:
•
BYPASS (filter not activated)
•
BESSEL 12, 18, 24 or 48 dB/oct
•
BUTTERWORTH 6, 12, 18, 24 or 48 dB/oct
•
LINKWITZ-RILEY 12, 24 or 48 dB/octave
3
PARAMETRIC EQ
, or parametric equalization filters to enhance or attenuate
different frequency ranges of the signal. 8 filters of this type are available for each
output, and each one of them can have the following setting:
•
BYPASS (filter not activated)
•
Parametric EQ (controls for frequency, Q or filter width and gain or
attenuation of the affected band)
•
HIGH SHELF, 6 or 12 dB/octave
•
LOW SHELF, 6 or 12 dB/octave
