Dolby Laboratories DP569 - Manual (Page 72)

Model DP569 User’s Manual Metadata
A–14
Bitstream Mode
Setting
Definition
Assc. Commentary
©
This is typically a single-channel program intended to convey additional commentary
that can be optionally decoded along with the Main Audio Service. This service
differs from a Dialogue Service because it contains an optional, rather than a required,
dialogue channel. The C Service may also be a complete mix of all program channels,
comprising up to six channels.
Assc. Emergency
(E)
This is a single channel service that is given priority in reproduction. When the E
Service appears in the bitstream, it is given priority in the decoder and the Main
Service is muted.
Assc. Voice Over
(VO)
This is a single channel service intended to be decoded and mixed to the center
channel (requires special decoders).
Main Sv Karaoke
(K)
The bitstream is a special service for karaoke playback.
Line Mode Compression Profile
Line Mode is discussed in Section A.3.1.
RF Mode Compression Profile
RF Mode is discussed in Section A.3.2, Dynamic Range Control.
RF Overmodulation Protection
This parameter is designed to protect against overmodulation when a decoded Dolby
Digital bitstream is RF modulated. When enabled the Dolby Digital encoder includes
pre-emphasis in its calculations for RF Mode compression. The parameter has no
effect when decoding using Line Mode compression. Except in rare cases, this
parameter should be disabled.
RF Overmodulation Protection
Enable
Disable