Playback method
(reference page)
Dolby Digital
output terminals
Media
66
ENGLISH
Additional Information Additional Information
ENGLISH
r Dolby Headphone
• This is a three-dimensional sound technology
developed jointly by Dolby Laboratories and Lake
Technology Ltd. of Australia for achieving surround
sound using regular headphones.
•Previously, when using headphones all the sounds
resonated inside the head and it was uncomfortable
to listen with headphones for long periods of time.
Dolby Headphone simulates speaker playback in a
room and places the sound at the front or the sides,
outside the head, to achieve a powerful sound like
the sound of movie or home theaters. This
technology is mainly for multichannel audio/video
equipment with Dolby Digital or Dolby Pro Logic
Surround decoding functions and works with a high
performance digital signal processing (DSP) chip.
•Dolby Headphone is effective not only for
multichannel sources but also for stereo programs.
• On the AVC-A11XV, it is possible to output signals
encoded in the Dolby Headphone mode from the
recording output terminal and record them on a
separate recorder.
[2] DTS Digital Surround
DTS Digital 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.
There are also music CDs recorded in DTS. These
CDs include 5.1-channel surround signals (compared
to two channels on current CDs). They do not include
picture data, but they offer surround playback on CD
players that are equipped with digital outputs (PCM
type digital output required).
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.
CD
DVD
Optical or coaxial
digital output
(same as for PCM)
2
Optical or coaxial
digital output
(same as for PCM)
3
Set the input mode
to “AUTO” or
“DTS”
( page 21).
Never set the mode
to “ANALOG” or
“PCM”.
1
Set the input mode
to “AUTO” or
“DTS”
( page 21).
[3] DTS-ES Extended Surround™
DTS-ES Extended Surround is a new multi-channel
digital signal format developed by Digital Theater
Systems Inc. While offering high compatibility with
the conventional DTS Digital Surround format, DTS-ES
Extended Surround greatly improves the 360-degree
surround impression and space expression thanks to
further expanded surround signals. This format has
been used professionally in movie theaters since
1999.
In addition to the 5.1 surround channels (FL, FR, C,
SL, SR and LFE), DTS-ES Extended Surround also
offers the SB (Surround Back, sometimes also
referred to as “surround center”) channel for
surround playback with a total of 6.1 channels. DTS-
ES Extended Surround includes two signal formats
with different surround signal recording methods, as
described below.
2 DTS-ES™ Discrete 6.1
DTS-ES Discrete 6.1 is the newest recording format.
With it, all 6.1 channels (including the SB channel) are
recorded independently using a digital discrete
system. The main feature of this format is that
because the SL, SR and SB channels are fully
independent, the sound can be designed with total
freedom and it is possible to achieve a sense that the
acoustic images are moving about freely among the
background sounds surrounding the listener from 360
degrees.
Though maximum performance is achieved when
sound tracks recorded with this system are played
using a DTS-ES decoder, when played with a
conventional DTS decoder the SB channel signals are
automatically down-mixed to the SL and SR channels,
so none of the signal components are lost.
2 DTS-ES™ Matrix 6.1
With this format, the additional SB channel signals
undergo matrix encoding and are input to the SL and
SR channels beforehand. Upon playback they are
decoded to the SL, SR and SB channels. The
performance of the encoder used at the time of
recording can be fully matched using a high precision
digital matrix decoder developed by DTS, thereby
achieving surround sound more faithful to the
producer’s sound design aims than with conventional
5.1- or 6.1-channel systems.
In addition, the bitstream format is 100% compatible
with conventional DTS signals, so the effect of the
Matrix 6.1 format can be achieved even with 5.1-
channel signal sources. Of course it is also possible to
play DTS-ES Matrix 6.1 encoded sources with a DTS
5.1-channel decoder.
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 holds true when playing CDs or LDs
on a DVD player or LD/DVD compatible player.
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 the AVC-A11XV, 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 the AVC-
A11XV ( page 26) lights before turning up
the master volume.
3A DVD player with DTS-compatible digital output
is required to play DTS DVDs. A DTS Digital
Output logo is featured on the front panel of
compatible DVD players. Recent DENON DVD
player models feature DTS-compatible digital
output – consult the player’s owner’s manual for
information on configuring the digital output for
DTS playback of DTS-encoded DVDs.
MANUFACTURED UNDER LICENSE FROM
DIGITAL THEATER SYSTEMS, INC.
U.S. PAT. NO’S. 5,451,942; 5,956,674; 5,974,380;
5,978,762; 6,226,616; 6,487,535 AND OTHER U.S.
AND WORLD–WIDE PATENTS ISSUED AND
PENDING.
“DTS”, “DTS–ES”, “Neo:6”, AND “DTS 96/24”
ARE TRADEMARKS OF DIGITAL THEATER
SYSTEMS, INC. © 1996, 2003 DIGITAL THEATER
SYSTEMS, INC. ALL RIGHTS RESERVED.
To Next Page
Loading...
