Junger Audio C8612 - Dolby® D/D+/AAC encoder - Manual (Page 16)

digital audio
modular
processing system
C8000
Dolby Digital / Digtal plus / Pulse (AAC) encoder
C8612
16/20
Dolby Digital plus
The encoded bit stream can be interpreted as independent
Bitstream Parameters if the signals do not belong to the same source. But they could also
be dependent, if two encoders are used to form a 7.1 stream.
Stream Type [independent, dependent]
Substream ID [0 … 7]
Stream Multiplexing [off (dual PID), on (single PID)]
Audio Description
Mixing Metadata Enable [off, on]
One may enable the decoder to perform the so called receiver mix.
In this case the encoder of the associated sub stream provides the
decoder with respective metadata.
External Program [MUTE, -50 … 0 … 12]
Scale Factor [dB] Here you define the level of the main program for the receiver mix.
Auto Mixing Set of parameters used by the decoder to control the auto mix.
The C8612 supports the ducking mode. I.e. you can set the
parameters for the ducking circuit at the receiver end.
Auto Voice Over Mode [off, on]
You may turn the auto mixing off and on here.
Trigger Level [dBFS] [0 … -95]
The ducking circuit measures the level of the voice over input
signal. Here you define the detection level, that will trigger the
ducker.
Trigger Delay Time [ms] [0 … 4992]
The time it takes from the moment the ducker is triggered to the
moment the ducker begins to reduce the external program level
(the main audio program].
Trigger Hold Time [ms] [0 … 4992]
The time that must elapse until the ducker starts to increase the
external program level after the voice over signal falls below the
trigger level.
Duck Attack Time [ms] [0 … 4992]
The time it will take to fade out the external program from nominal
level to the value set by "External Program Scale Factor".
Duck Release Time [ms] [0 … 4992]
The time it will take to fade in the external program from its duck
level to the nominal level.
Look Ahead Time [ms] [0 … 85]
The time the trigger circuit is able to look "ahead" to decide if the
voice over channel becomes active.
Mono Panning [deg] [0.0 … 358,5]
If the voice over signal is sent in either 1/0 or 1+1 channel mode,
the decoder may perform a mono panning of the voice signal to
place it somewhere in the surround field.