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ENGLISH
(2) Dolby Pro Logic II
• Dolby Pro Logic II is a new multi-channel playback format developed by Dolby Laboratories using feedback logic steering
technology and offering improvements over conventional Dolby Pro Logic circuits.
• Dolby Pro Logic II can be used to decode not only sources recorded in Dolby Surround ( ) but also regular stereo sources
into five channels (front left, front right, center, surround left and surround right) to achieve surround sound.
• Whereas with conventional Dolby Pro Logic the surround channel playback frequency band was limited, Dolby Pro Logic II
offers a wider band range (20 Hz to 20 kHz or greater). In addition, the surround channels were monaural (the surround left
and right channels were the same) with previous Dolby Pro Logic, but Dolby Pro Logic II they are played as stereo signals.
•
Various parameters can be set according to the type of source and the contents, so it is possible to achieve optimum decoding
(see page 23).
Sources recorded in Dolby Surround
These are sources in which three or more channels of surround have been recorded as two channels of signals using Dolby
Surround encoding technology.
Dolby Surround is used for the sound tracks of movies recorded on DVDs, LDs and video cassettes to be played on stereo
VCRs, as well as for the stereo broadcast signals of FM radio, TV, satellite broadcasts and cable TV.
Decoding these signals with Dolby Pro Logic makes it possible to achieve multi-channel surround playback. The signals can
also be played on ordinary stereo equipment, in which case they provide normal stereo sound.
There are two types of DVD Dolby surround recording signals.
q 2-channel PCM stereo signals
w 2-channel Dolby Digital signals
Regardless of the signal being played, when the 2-channel decode mode is set to the “Pro Logic II” mode in the “AUTO
DECODE” mode, the surround mode is automatically set to “Dolby Pro Logic II”.
2 Sources recorded in Dolby Surround are indicated with the logo mark shown below.
Dolby Surround support mark:
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories.
DTS Digital Surround
Digital Theater Surround (also called simply DTS) is a multi-channel digital signal format developed by Digital Theater Systems.
DTS offers the same “5.1” playback channels as Dolby Digital (front left, front right and center, surround left and surround right) as
well as the stereo 2-channel mode. The signals for the different channels are fully independent, eliminating the risk of deterioration
of sound quality due to interference between signals, crosstalk, etc.
DTS features a relatively higher bit rate as compared to Dolby Digital (1234 kbps for CDs and LDs, 1536 kbps for DVDs) so it
operates with a relatively low compression rate. Because of this the amount of data is great, and when DTS playback is used in
movie theaters, a separate CD-ROM synchronized with the film is played.
With LDs and DVDs, there is of course no need for an extra disc; the pictures and sound can be recorded simultaneously on the
same disc, so the discs can be handled in the same way as discs with other formats.
Other media include CDs recorded in DTS. These are the same discs as conventional CDs (recorded in 2 channels) but include 5.1
channel surround signals. They do not include images, but they do permit surround playback on the ADV-1000 and on CD
players.DTS surround track playback offers the same intricate, grand sound as in a movie theater, right in your own listening room.
2 DTS compatible media and playback methods
Marks indicating DTS compatibility: and .
The following are general examples. Also refer to the player’s operating instructions.
Media
CD
LD (VDP)
DVD
DTS Digital output jacks
Optical or coaxial digital output
(same as for PCM) 2
Optical or coaxial digital output
(same as for PCM) 2
Optical or coaxial digital output
(same as for PCM) 3
Playback method (reference page)
Set the input mode to “AUTO” or “DTS” (page 19).
Never set the mode to “ANALOG” or “PCM”. 1
Set the input mode to “AUTO” or “DTS” (page 19).
Never set the mode to “ANALOG” or “PCM”. 1
Set the input mode to “AUTO” or “DTS” (page 19).
1 DTS signals are recorded in the same way on CDs and LDs as PCM signals. Because of this, the un-decoded DTS signals
are output as random “hissy” noise from the CD or LD player’s analog outputs. If this noise is played with the amplifier
set at a very high volume, it may possibly cause damage to the speakers. To avoid this, be sure to switch the input mode
to “AUTO” or “DTS” before playing CDs or LDs recorded in DTS. Also, never switch the input mode to “ANALOG” or
“PCM” during playback. The same is true when playing CDs and LDs recorded in DTS on the ADV-1000 or on LD/DVD
compatible players. With DVDs, the DTS signals are recorded with a special recording method so there is no problem.
For DVDs, the DTS signals are recorded in a special way so this problem does not occur.
2 The signals provided at the digital outputs of a CD or LD player may undergo some sort of internal signal processing
(output level adjustment, sampling frequency conversion, etc.). In this case the DTS-encoded signals may be processed
erroneously, in which case they cannot be decoded by this unit, or may only produce noise. Before playing DTS signals
for the first time, turn down the master volume to a low level, start playing the DTS disc, then check whether the DTS
indicator on this unit (see page 19) lights before turning up the master volume.
3 To play in DTS Digital Surround on the ADV-1000, set “DVD setting change” — “Audio setting” — “Digital output” to
“Normal” in the setup. (The factory default is “Normal”.)
“DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc.