Grass Valley AMX-3981 2014 - Manual (Page 78)

GUIDE TO INSTALLATION AND OPERATION
72 | AMX-3981
Digital only selection. If Mute (OFF) is selected, all outputs are muted for any type of input bitstreams; the Mute
mode disables the Dolby decoder.
The Input Selection determines the Dolby decoder input channel pair. See Audio Processing/AES Inputs for the
input selection from the audio card.
The Decoder Status section indicates the bitstream format detected at the decoder input. The possible values are:
Dolby E (16, 20 or 24 bits), Dolby Digital (16 or 32 bits, Channel 1, 2 or both), PCM. The detected Dolby format will
give access to the corresponding tab in the row beside the Control tab.
The Dolby Digital section at the bottom of the tab is available only if the input bitstream is Dolby Digital, and the
Detection Mode is Dolby Digital or Auto.
• Refer to ANNEX 5 at the end of this document: Dolby Digital Main Channel Output Functions.
The Stream Select parameter selects the stream number to be decoded when multiple Dolby Digital bitstreams are
embedded within a single channel pair.
The AES Channel Select parameter selects which AES3 channel is the source of the Dolby Digital decoder if the
Dolby Digital data is configured in Professional 16-bit format. If the selected channel does not contain a valid Dolby
Digital bitstream, the channel data will be passed to the decoder output as a PCM signal.
The Listening Mode parameter selects the main channel output listening mode. It is active only for a Dolby Digital
input signal.
• Full is the standard mode.
• Monitoring in 3 Stereo mode reproduces only the left, right and center channels, the surround channels are
muted.
• In Phantom mode, the center channel output is muted.
• The Stereo mode will output only on the left and right channels, and the Mono mode only on center channel.
• Refer to ANNEX 5 at the end of this document: Dolby Digital Main Channel Output Functions.
6.1.2 Dolby E tab
The Dolby E tab indicates status information for the selected Dolby E
bitstream.
The Dolby E Common Status section shows two values that are
common to all programs contained in the Dolby E bitstream: Program
Configuration and Frame Rate.
The Decoder to Proc Channel Assignment section gives the decoder
output mapping to the internal channels of the AMX-3981.
• The Main Output sub-section shows channel assignments
related to the Program Configuration.
The Prg 1 to Prg 8 sub-tabs indicate Metadata information associated
with each Dolby E program: Coding Mode, Bitstream Mode,
Dialnorm (dialog normalization) value, Line Mode Profile, RF Mode
Profile, Dolby Surround Mode, Surround EX Mode and Preferred
Stereo Downmix. The number of programs depends on the Program
Configuration.
Figure 6.2 Dolby E and Dolby Digital
decoder - Dolby E tab