Sony HT-BE1 Primary Operating Instructions Manual page 18

Features of each sound field mode
Sound field mode
AUTO FORMAT
DECODE
DOLBY PRO LOGIC
MOVIE
(DOLBY PRO
LOGICII MOVIE)
MUSIC
(DOLBY PRO
LOGICII MUSIC)
GB
18
Recommended cases
To listen to the original sound
of the program.
When set to "DOLBY PRO
LOGIC," the receiver performs
Pro Logic decoding.
This setting is ideal for movies
encoded in Dolby Surround.
This setting is ideal for normal
stereo sources, such as CDs.
Effect
Automatically detects the type of audio signal
being input (Dolby Digital, DTS, Dolby Pro
Logic, or standard 2 channel stereo) and performs
the proper decoding if necessary. This mode
presents the sound as it was recorded/encoded,
without adding any effects.
Sources recorded in 2 channels are decoded in 4
channels.
This mode reproduces sound in 5.1 channel when
watching pictures encoded in Dolby Surround.
The stereo source is reproduced in 5.1 channel
appropriately.