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DOLBY TrueHD
Dolby TrueHD is a lossless encoding technology developed for high-
denition optical discs in the upcoming era. Dolby TrueHD delivers
tantalizing sound that is bit-for-bit identical to the studio master, unlocking
the true high-denition entertainment experience on high-denition
optical discs in the next generation. When coupled with high-denition
video, Dolby TrueHD oers an unprecedented home theater experience
with stunning sound and high-denition picture.
It supports bit rates of up to 18 Mbps and records up to 8 full-range channels
individually with 24-bit/96 kHz audio. It also features extensive metadata
including dialogue normalization and dynamic range control. Supported by
High-Denition Media Interface (HDMI), a single-cable digital connection
is possible for high-denition audio and video. HD DVD and Blu-ray Disc
standards currently limit their maximum number of audio channels to eight,
whereas Dolby Digital Plus and Dolby TrueHD support more than eight audio
channels. Note that the T 748 only supports 7.1 channel.
DOLBY DIGITAL EX
Using a Matrix decoder, this method creates the back channel (sometimes
also called the surround center”) by means of signals on the left and
right surround channels recorded in Dolby Digital 5.1, reproduction being
provided in Surround 6.1. This method should be selected with sources
bearing the “Dolby Digital (double-D symbol)-EX” symbol, recorded in Dolby
Digital Surround EX.
With this additional channel you will experience improved dynamics and
a better sensation of movement within the sound eld. If media sources
recorded in Dolby Digital EX are decoded with a Digital EX decoder,
the format is detected automatically, and the Dolby Digital EX mode is
selected. However, some media sources recorded in Dolby Digital EX can be
detected as simple Dolby Digital media sources. In this case Dolby Digital
EX should be selected manually.
NOTE
Please refer to the section “Listening Mode” at the Main Menu
discussions for a description of Pro Logic, PLIIx Movie, PLIIx Music and
Stereo Downmix modes.
DTS
The Digital Theater System Digital Surround (simply called DTS) is a multi-
channel digital signal format that can process higher data rates than with
Dolby Digital. Although both Dolby Digital and DTS are 5.1 channel media
formats, discs bearing the “DTS” symbol are thought to provide better sound
quality due to the lower audio compression required. It also oers a broader
dynamic, producing magnicent sound quality.
A DTS audio input can be congured relative to its format as follows
Stereo: If the detected audio is of Dolby stereo format, you can default
it to one of the following settings - Stereo, PLIIx Movie, PLIIx Music, PLIIx
Game, Neo:6 Cinema or Neo:6 Music.
Surround: If the detected audio is of DTS Surround format, you can
default it to one of the following settings - Stereo, PLIIx Movie, PLIIx
Music, Neo:6 Cinema, Neo:6 Music or None.
None: If “None” is selected, the DTS signal will be defaulted to the
“Stereo or “Surround” settings set forth at the “PCM” option. See
discussion below about ‘PCM’.
NOTE
Please refer to the section “Listening Mode” at the Main Menu
discussions for a description of Stereo Downmix and DTS NEO:6
surround modes.
PCM
PCM (Pulse Code Modulation) is the digital representation of a standard
audio signal converted with little or no compression. If “None is selected
for any of the Dolby or DTS settings, this “PCM” section will default the audio
signal as follows
Stereo: The detected stereo audio format will be congured into one
of the following options - PLIIx Movie, PLIIx Music, PLIIx Game, Neo:6
Cinema, Neo:6 Music EARS or Enhanced Stereo.
Surround: The detected surround audio format will be congured into
one of the following options - PLIIx Movie, PLIIx Music, Neo:6 Cinema,
Stereo or None.
ANALOG
If the audio input is an analog signal, the following are the surround modes
the input can be defaulted - Pro Logic, PLIIx Movie, PLIIx Music, NEO: 6
Cinema, NEO: 6 Music, EARS, Enhanced Stereo, Analog Bypass and None.
NOTE
All these Listening Modes for Dolby Digital, DTS, PCM and Analog
can be directly changed by pressing the “Listening Mode” button on
the front panel or through the “Listening Mode” option at the Main
Menu window. The chosen audio format will be reected back to the
appropriate setting at the “Listening Mode Setup.
DOLBY SETUP
Under this menu, the Dolby Digital’s Dynamic Range Control can be
adjusted as well as the settings for Dolby Digital Pro Logic IIx Music.
Dyn Range Ctrl: You can select the eective dynamic range (subjective
range from soft to loud) for playback of Dolby Digital soundtracks. For
fully cinematic eect, always select “100”, the default. Settings of 75,
50 and 25% progressively reduce dynamic range, making soft sounds
comparatively louder while limiting the peak loudness of loud ones.
The 25 setting will yield the least dynamic range and is best for late-
night sessions or other times when you wish to retain maximum dialog
intelligibility while minimizing overall volume levels.
Dolby Pro Logic IIx Music: Please refer to the same description of
“PLIIx Music under the ADJUSTING LISTENING MODES” segment of the
“OPERATION - USING THE T 748 - MAIN MENU”.
OPERATION
USING THE T 748  SETUP MENU
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ENGLISHPORTUGUÊS FRANÇAISESPAÑOLITALIANODEUTSCHNEDERLANDSSVENSKAРУССКИЙ
23


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