Nevion DWC-HD-DMUX - Manual (Page 17)

DWC-HD-DMUX Rev. F
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3.18 Audio processing block
The output of each stereo signal from the audio cross point matrix may be manipulated in
the audio processing block (LL, RR, LR, RL !LR, L!R, (L+R)/2, MS).
The stereo signals may be output in one of the following ways:
- LR, Left / Right No change.
- RL, Right/ Left Channels are swapped.
- LL, Left/ Left Left channel is copied into the right channel.
- RR, Right/ Right Right channel is copied into the left channel.
- !LR, ØLeft/ Right The left channel is phase inverted.
- L!R, Left/ ØRight The right channel is phase inverted.
- MM, (Left + Right)/2 The left and right channels are summed.
- MS, MS/AB The left and right channels are converted from AB stereo
to MS stereo.
3.19 Audio embedder
The audio embedder can be enabled/disabled per group. When a group to be embedded is
disabled the audio inside that group is removed.
A 24-bit audio signal uses the Extended Audio Data Packet for the 4 least significant bits.
Not all equipment can handle Extended Audio Data Packets correctly, so the option exists
to truncate all audio data to 20 bits. This setting is common for all embedder channels.
The insertion of Audio Control Packages can also be switched on and off. This setting is
also common for all embedder channels.
For SD input (i.e. operation as a frame synchronizer) the audio embedder can also be
switched off all together. In this state all audio embedded on the input signal is left
unchanged.
3.20 Analog audio output
The level of the analog audio output can be adjusted in GYDA. The minimum step is 0.5dB
(input will be rounded to nearest 0.5dB) and the range is from -95.5dBu to 24dBu. It is also
possible to mute the output completely.