Sony STR-ZA810ES Manual page 82

You can also select [Sound Field] in the [Audio Settings] menu.
[74] Enjoying Video and Sound
Selectable sound fields and their effects
Sound field
2ch Stereo
2CH/MULTI
Multi Ch Stereo
Direct
A.F.D. (Auto
Format
Decoding)
Dolby Surround
MOVIE
Enjoying sound effects
Display
Effects of the sound field
panel
Plays back 2-channel audio signals without
adding any surround effect. Monaural and
multi-channel audio signals are output after
being converted into a 2-channel signal.
This sound field is best suited for playing
2CH
back audio signals as they are from two
STEREO
front speakers only, without adding any
virtual surround effect.
The sound is output from the front left/right
speakers only. There is no sound from the
subwoofer.
Outputs sound from all connected
speakers.
When 2-channel or monaural audio signals
are input, the receiver outputs sound from
all speakers without adding any surround
MULTI ST.
effect.
When multi-channel audio signals are
input, sound may not be output from certain
speakers depending on the speaker
settings or playback content.
Plays back all audio signals without adding
DIRECT
any surround effect.
Decodes and plays back audio signals
A.F.D. using the optimal processing method
according to the audio signal input.
Dolby Surround upmixer expands
traditional audio content for playback
through multi-channel speaker
configuration, including height speakers.
This makes it possible to reproduce height
information for sound images even when
DOLBY
playing back conventional movie or audio
SURR
content, providing a more realistic sense of
immersion than ever before.
This upmixer is a new and enhanced
replacement for the Dolby Pro Logic II
technology.
Neural:X is a new upmixer technology