Sony MHC-GZR8D Operating Instructions Manual page 100

"Dolby Digital Karaoke" format
(DVD VIDEO only)
The Dolby Digital format, which
reproduces surround sound using
5 channels, can also contain the
"Dolby Digital Karaoke" format
which is specialized for karaoke. In
the "Dolby Digital Karaoke" format
discs, guide melody and guide vocal
tracks are recorded in addition to the
accompaniment. You can select them
when Karaoke Mode is turned on.
Speaker output in normal Dolby
Digital format ( channel)
Front (L)
Surround (L)
100
GB
Center Front (R)
Surround (R)
Speaker output in "Dolby Digital
Karaoke" format
Accompaniment
Front (L) Center
Guide melody
Surround (L)
Guide vocal 1
You can select any of these.
You can check the audio information by

pressing AUDIO
playing a "Dolby Digital Karaoke" disc,
"" appears at the current audio format.
Example:
2/0: Recorded only with accompaniment.
3/0: Recorded with guide melody.
3/1: Recorded with guide melody and one guide vocal.
3/2: Recorded with guide melody and two guide vocals.
Accompaniment
Front (R)
Surround (R)
Guide vocal 2
(page 41). When