Sony DAV-X1 (serv.man2) Service Manual ▷ View online
21
3. Technology of
Front surround system
22
3-1. Original DSP Technology
Original DSP Technology
– Special DSP, optimized for S-
FORCE PRO Front Surround
– More capacity used for virtual
(2.4times as much as DCS)
– Revolution in reproducing the
expansion of surround sound!!
FORCE PRO Front Surround
– More capacity used for virtual
(2.4times as much as DCS)
– Revolution in reproducing the
expansion of surround sound!!
Original DSP Technology
– Special DSP, optimized for S-
FORCE PRO Front Surround
– More capacity used for virtual
(2.4times as much as DCS)
– Revolution in reproducing the
expansion of surround sound!!
FORCE PRO Front Surround
– More capacity used for virtual
(2.4times as much as DCS)
– Revolution in reproducing the
expansion of surround sound!!
To achieve the best sound quality for the front surround system, there are three
more technologies.
more technologies.
The first technology is SONY original DSP technology.
To create the best virtual sound, the complex algorithm and capacity of DSP are
necessary.
S-FORCE PRO FRONT SYSTEM uses an advanced DSP which can support
such complex algorithm and more calculating capacity.
necessary.
S-FORCE PRO FRONT SYSTEM uses an advanced DSP which can support
such complex algorithm and more calculating capacity.
(2.4 or more times as much as DCS capacity)
By this DSP technology, more effective virtual surround sounds can be created.
23
Digital
Signal
Signal
Processor
(IC506)
S-FORCE PRO
FRONT
SURROUND
S-RAM
(IC507)
?
MB
SDI1
SDO1
SDO2
SDO3
Original
Multi channel
Digital data
Multi channel
Digital data
X601
13.9MHz
13.9MHz
FL, FR
SL, SR
C, SW
IC801
System
Controller
Mode setting
Control signal
Control signal
HCD-X1 Circuit operation
DSP IC for S-Force PRO Front Surround is IC506 in HCD-X1.
Depends on the mode setting control signal input from System controller (IC801),
DSP(IC506) operates each data processing of “S-Force PRO Front Surround”
with S-RAM(IC507).
The operation clock for data processing is input from X601.
DSP(IC506) operates each data processing of “S-Force PRO Front Surround”
with S-RAM(IC507).
The operation clock for data processing is input from X601.
The sound effect is applied to the original multi channel sound and output from
IC506 SDO1-SDO3 terminals.
IC506 SDO1-SDO3 terminals.
24
Digital
Signal
Signal
Processor
(IC506)
S-FORCE PRO
FRONT
SURROUND
S-RAM
(IC507)
?
MB
SDI1
SDO1
SDO2
SDO3
Original
Multi channel
Digital data
Multi channel
Digital data
X601
13.9MHz
13.9MHz
FL, FR
SL, SR
C, SW
IC801
System
Controller
Mode setting
Control signal
Control signal
HCD-X1 Circuit operation
Digital Signal
Processing
Processing
As the digital sound processing is done in IC506 and IC507, the failure of faulty
sound never happens basically.
If a failure happens in these ICs, the symptom will be “NO SOUND” or “Digital
noise output” basically.
sound never happens basically.
If a failure happens in these ICs, the symptom will be “NO SOUND” or “Digital
noise output” basically.
So, if the customer claims any variation or strange feeling of the sound, please
check the speaker setting or the mode setting for the sound source firstly.
Most of problems are due to these setting problem basically.
check the speaker setting or the mode setting for the sound source firstly.
Most of problems are due to these setting problem basically.
The speaker and mode setting are explained in Chapter 4.
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