Dolby Laboratories Multichannel Audio Tool DP570 - Manual (Page 109)

Parameter Definitions
Dolby ® DP570 Multichannel Audio Tool User’s Manual 93
each program contains its own metadata. The default setting is 5.1+2. Table D‐3 shows all
the available configurations.
Program Description Text
This is a 32‐character ASCII text field that allows the metadata author to enter a description
of the audio program. For example, this field may contain the name of the program (Movie
Channel Promo), a description of the program source (Football Main Feed), or the program
language (Danish).
Dialogue Level
The Dialogue Level parameter is discussed in Dialogue Level on page 86.
Channel Mode
This parameter (also known as audio coding mode) indicates the active channels within the
encoded bitstream and affects both the encoder and consumer decoder. This parameter
instructs the encoder which inputs to use for this particular program; it tells the decoder
what channels are present in this program so the decoder can deliver the audio to the
correct speakers.
The setting is described as X/Y, where X is the number of front channels (Left, Center,
Right) and Y the number of rear or surround channels.
The availability of certain channel modes depends on the Dolby Digital encoder data rate
and whether the LFE channel is present. For example, you can’t have a mono stream with
an LFE channel (1.1) or a 3/2 stream at 96 kbps. Appropriate data rates are shown in the
definition of each setting.
Table D-3 Program Configuration Settings
Program Configurations
5.1+2 4 + 2
5.1+2 Ч 1 4 + 2 Ч 1
4 + 4 3 Ч 2
4 + 2 Ч 2 2 Ч 2 + 2 Ч 1
4 + 2 + 2 Ч 1 2 + 4 Ч 1
4 + 4 Ч 1 6 Ч 1
4 Ч 2 4
3 Ч 2 + 2 Ч 1 2 + 2
2 Ч 2 + 4 Ч 1 2 + 2 Ч 1
5.1+2 4 + 2
5.1+2 Ч 1 4 + 2 Ч 1
4 + 4 3 Ч 2
Note: The presence of the LFE channel is indicated by the LFE Channel parameter.