Automatic Level Control (Alc) - RCF MZ 8060 User Manual

EXAMPLE
The first zone button (A ZONE) of all BM 3003 paging microphones is assigned to the
MASTER A output only.
The second zone button (B ZONE) of all BM 3003 paging microphones is assigned to the
MASTER B output only.
The third zone button (C ZONE) of all BM 3003 paging microphones is assigned to the
MASTER C, D and SLAVE A outputs.

AUTOMATIC LEVEL CONTROL (ALC)

This function automatically adjusts the level of one or more audio outputs according to
the detected ambient noise.
If the SLAVE unit is present, two ALC will be available: the first for MASTER unit audio
outputs (with ALC enabled) only, the second for the SLAVE unit audio outputs (with ALC
AUTOMATIC LEVEL CONTROL (ALC)
enabled) only. This selection needs to be made in advance by clicking either MASTER or
SLAVE on the far right of the main window.
If ALC is enabled, the audio input no.8 (of the selected unit) is reserved for the
microphone used as noise detector and its red ALC indication lights up (below the signal
level bar).
Note: set the input 8 to MIC (INPUTS SETUP).
When the ambient noise (detected by the microphone linked to the input 8) is above the
threshold, only audio outputs (of the same unit, MASTER or SLAVE) with ALC enabled are
processed.
Click ALC in the main window.
THRESHOLD: adjusts the ambient noise level threshold above which the ALC operates.
GAIN / ATTEN: sets either the maximum (if positive) or the minimum (if negative)
guaranteed level of audio outputs with ALC enabled.
Attack: adjusts the ALC attack time.
Release: adjusts the ALC release time.
Ratio: gain / attenuation ratio relative to each single decibel of detected noise
above the threshold. For example, if the threshold is set to –40 dB and the ambient
noise is 5 dB higher (–35 dB), a RATIO value 1.00:1 will entail either a 5 dB gain
(if the GAIN / ATTEN fader is positive) or a 5 dB attenuation (if the GAIN / ATTEN
fader is negative), a RATIO value 2.00:1 will entail a 10 dB gain / attenuation, etc...
In any case, the maximum gain or attenuation will never exceed the limit level set
by the GAIN / ATTEN fader.
Enable: toggles the ALC (keep it on when using).
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