Nevion FRS-HD-CHO - Manual (Page 28)

FRS-HD-CHO Rev. 9
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Channel L/R manipulation
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.
- nLR, ØLeft/ Right The left channel is phase inverted.
- LnR, 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.
The sum products (L+R/2 and MS) are reduced in level by 6 dB to avoid any possibility of
clipping.
Audio gain
Audio gain is a 16 bit value that can be set for each stereo pair going into the audio
processing block. The actual gain is the 16bit value/ 100dB. The gain range is set to [+96dB,
-96dB] with a gain step of 0.1dB.
Note that non-audio data is ignored and left unchanged by the gain function.
5.17 Audio embedder
Figure 25: Gyda view of the audio embedders
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 upper 4 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.