Nevion FSR-HD - Manual (Page 16)

FRS-HD Rev. G
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3.15 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, RL, !LR, L!R, (L+R)/2, MS) This is controlled with
the GYDA controller.
The stereo signals may be output in one of the following ways:
- LR, Left / Right No change.
- LL, Left/ Left Left channel is copied into the right channel.
- RR, Right/ Right Right channel is copied into the left channel.
- RL, Right/ Left Channels are swapped.
- !LR, ØLeft/ Right The left channel is phase inverted.
- L!R, Left/ ØRight The right channel is phase inverted.
- (L + R)/2 The left and right channels are summed.
- MS The left and right channels are converted from AB
stereo to MS stereo.
The sum products ((L+R)/2 and MS) are reduced in level by 6 dB to avoid any possibility
of clipping.
3.16 Audio embedder
The audio embedder can be enabled per group in GYDA. When a group is disabled the
audio inside that group is removed.
When in SD mode, a 24bit sound signal can be changed to 20bit through GYDA control.
This removes the 4 least significant bits of the signal. The audio control package is left
unchanged as the bit range is still present.
The audio control package can also be switched on and off in SD mode through GYDA
control.
The audio embedder can be switched off all together. In this state the audio embedded
on the input signal is left unchanged.
3.17 Analog audio output
The level of the analog audio output can be adjusted in GYDA. The minimum step is
0.5dB and the range is from -95.5dBu to 24dBu. It is also possible to mute the output
totally.