Software Formats Illustrated - Sony STR-DE845 Training Manual

Figure 3-1 illustrates the typical devices connected to the various receiver inputs and what software formats are
compatible with each input.
NOTE: The audio from the Tuner antenna section is also an input to the digital board. It is processed the same
as any of the other analog inputs in order to apply the desired sound field effects. The input signals to the tuner
are off the air (FM and AM) signals. There is also an analog Video 3 Input on the front panel of the receiver that
can accommodate another VCR.

Software Formats Illustrated

Dolby Surround Prologic
Left
Right
Four
Channel
Center
Signals
Surround
Note: From a live performance
or recording
Figure 3-2 illustrates the encoding and decoding of a Dolby Surround Prologic format. Note that this format can
be encoded on the software medium (DVD disk, VHS tape etc.) in a digital data stream or analog signal. The
original four channels are encoded into two channels (Left Total and Right Total). At the decoder, the two-
channel signal is decoded back to the original four channel surround signals (Left, Right, Center and Surround).
Also note that the surround signal in the Prologic format in fed to both rear speakers, so both speakers receive
equal signals. There is a slight delay in time as compared to the front speakers.
Dolby Digital (AC-3), and DTS
Left
Center
Right
Left
5.1
Surround
Channel
Right
Signals
Surround
Low
Freq.
Effect
Note: From a live performance
or recording
Software Medium
LT
Dolby
Surround
ProLogic RT
Encoder
DOLBY SURROUND PROLOGIC
Software Medium
Digital
Dolby
Data
Digital
Stream
or
DTS
Encoder
DOLBY DIGITAL & DTS
Laser Disk
DVD Disk
LT
CD
VHS Tape
RT
Cassette Tape
Cable
Satellite TV
Regular Tv
FIGURE 3-2
Digital
Laser Disk
Data
DVD
Stream
Cable
Satellite TV
Regular TV
FIGURE 3-3
12
3. Digital Board Inputs
Dolby
Surround
ProLogic
Decoder
Dolby
Digital
or
DTS
LFE
Decoder
S
L
C
R
S
RS
L
C
LS
R