digital audio
modular
processing system
C8000
4/8/16 channels DSP with SDI & system-bus I/O
C8492(B)
page
19/30
DSP 1B – 4 x 2 mode
The C8492 offers the feature to use pairs of channels in a fail over mode. I.e. if the audio signal fails in
the first audio pair, the processor may switch over to the adjacent (e.g. 1/2 >> 3/4) pair automatically.
The functions of the circuits Failover A – Failover B are similar.
The switch over will be performed by a cross fade.
Failover A
Mode
[Primary / Secondary / AUTO]
Selection between both inputs and the auto mode.
Dual Mono
[OFF / AUTO]
If the fail over input is fed by a dual mono signal, the circuit may
automatically copy the opposite one if one fails.
Fail Threshold (dBFS) [-60 … -40]
Trigger threshold for the fail detector.
Fail Wait (s)
[1.5 … 10.0]
Time from detection of an audio loss to the moment of switch over.
Fail Return (s)
[0.0 … 10.0]
Time from the detection of an audio until switch back.
Side Chain Filter
[ON / OFF]
A high pass filter (300 Hz) and a low pass filter (3000 Hz) are applied
to the detector side chain (not the audio path) to prevent hum and
noise from blocking fail over switching.
