Grass Valley LGK-3901 - Manual (Page 25)

GUIDE TO INSTALLATION AND OPERATION
LGK-3901/DSK-3901 | 19
4.5 Audio Processing
Audio processing requires the LGK-3901-OPT-AUD or DSK-3901-OPT-AUD audio option to be enabled.
The audio engine provides the following possible features:
• Input selection from embedded SDI or external AES
• AB mixing of multi-channel audio sources for cuts and variable rate fades
• Multi-channel voice-overs from embedded SDI or external AES inputs
• Easyplay clip storage and playout of two streams sharing eight audio channels (LGK-3901 only)
• Wide shuffles and per-channel control of gain level, trim, phase and mute
• Dynamic selection of audio preview points and metering
• Fade to silence and configurable audio delays
4.5.1 Route Manager
Audio routing is set up via the Configurator Tool by dragging audio blocks onto the Audio Route Manager view and
connecting up appropriate pins between input and output blocks.
In the simple example shown below the first 8 channels of two embedded SDI feeds are being AB mixed together. An
AES voice-over is then applied before audio is output to SDI PGM OUT. This example does not incorporate typical
control blocks for features such as input gain, input shuffling, fade to silence, output gain, preview and meter
multiplexing or meters.
Please see section 7.4 for more details of the various audio blocks which are available for LGK-3901/DSK-3901.