12
9.4 Input processing
The processing available for each audio input 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 input channel.
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
input, 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
•
HIGH PASS, 6 or 12 dB/octave
•
LOW PASS, 6 or 12 dB/octave
•
ALL PASS, 1st or 2nd order
4.
COMPRESSOR/LIMITER
, or dynamics processor of the input channel with signal-
peak detection. It has the following controls:
•
THRESHOLD
: activation threshold of the processor (dB)
