Sony STR-DG820 Operating Instructions Manual page 56

Selecting Auto Format Direct
(A.F.D.) mode
The Auto Format Direct (A.F.D.) mode allows
you to listen to higher fidelity sound and select
the decoding mode for listening to a 2 channel
stereo sound as multi channel sound.
2CH/
A.DIRECT
A.F.D.
AUTO CAL
DISPLAY
Press A.F.D. repeatedly to select
the sound field you want.
For details, see "Types of A.F.D. mode" (page
56).
Types of A.F.D. mode
A.F.D. mode
[Display]
A.F.D. Auto
[A.F.D. AUTO]
Enhanced surround mode
[E. SURROUND]
Multi Stereo
[MULTI ST.]
56
US
A.F.D. MOVIE MUSIC
NIGHT
INPUT
MODE SLEEP MODE
AMP
MENU
Multi channel
audio after
decoding
(Detecting
automatically)
(Depends on selected
enhanced surround
mode)
(Multi Stereo)
Effect
Presents the sound as it was recorded/encoded without adding
any surround effects. However, this receiver will generate a
low frequency signal for output to the subwoofer when there
is no LFE signals.
For details, see "Selecting enhanced surround mode" (page
57).
Outputs 2 channel left/right signals from all speakers.
However, sound may not be output from certain speakers
depending on the speaker settings.