Crystal Vision
Using the front control panel
SYNNER-E 3G User Manual R1.2
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10/09/2012
allowing seamless changes in audio delay. On non-resampled channels (resample not enabled)
samples will be passed unchanged through the signal path: if the delay has to change, single
audio samples will be dropped or repeated as required. This control has no effect on channels
containing Dolby E.
Stereo to Mono conversion
For the purposes of this discussion it is assumed that all inputs are stereo pairs and that each
half of the stereo pair is on a consecutive input i.e. input 1 and input 2 are a stereo pair, input 3
and input 4 are a stereo pair, etc.
The action of converting a stereo pair to a mono output is simply a summing process followed
by a gain correction. The gain correction is necessary because when the two components of a
stereo signal are summed, a 6dB increase in output level will result; this will then need to be
corrected to maintain unity gain.
The action of selection will cause that channel to output the mono sum of itself and its
associated channel. The associated channel output will still output its unaltered programme.
Either channel of a pair can be selected for stereo to mono conversion.
Example: Selecting channel 1 for mono conversion will result in channel 1 outputting the
converted mono sum of channels 1 and 2. Channel 2 will remain outputting the original
channel 2 programme. Similarly deselecting channel 1 and selecting channel 2 will cause
channel 2 to output the converted mono programme and channel 1 the original channel 1
programme.
Note:
When transporting Dolby E, to ensure integrity of the audio any Dolby E stream must be
treated as a stereo pair and no audio processing such as mute, mono and gain is applied.
Invert and mute
Each of the 32 audio input channels can be individually inverted or muted by selecting mute
and invert in the de-embedder invert, AES invert, de-embedder mute and AES mute menus.
Note:
When routing Dolby E, to ensure integrity of the audio any Dolby E stream must be
treated as a stereo pair and no audio processing such as mute, mono and gain is applied.
Routing matrix
At the heart of SYNNER-E 3G is the twin 32 input/16 output routing matrix. This will allow
any of the up to 32 possible inputs, 16 embedded channels and up to eight stereo AES audio
inputs to be routed to any of the 16 outputs for embedding or up to eight stereo AES outputs.
The AES channels can be configured as either inputs or outputs from the AES SETUP menu
giving a total of eight stereo channels of mixed I/O.
Note:
All routing matrix changes are live so care should be taken when re-routing as all changes
in routing will appear on the output of the routing matrix instantaneously.
Tracking audio delay speed
This sets the time the audio delay takes to track fast or abrupt changes in video delay, when
video tracking is on. The faster the rate of change, the quicker the audio delay will match
changes in video delay so minimising lip sync errors, but at the expense of a matching change
of musical pitch.
Refer to the Introduction chapter for more help with TAD speed settings for different
applications.
