Input Processing - Ecler ALMAcard Manual De Instrucciones

5.4. 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)
•
RATIO: gain reduction of the processed (compressed) signal compared to the
incoming signal
•
ATTACK: time it takes the compressor to start compressing after the threshold has
been reached
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