Dolby Setup; Dts Setup; Dts Surround Modes - NAD M15 HD Owner's Manual

OPERATION
USING THE M15 HD – SETUP MENU

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 effective dynamic range
(subjective range from soft to loud) for playback of Dolby Digital
soundtracks. For fully cinematic effect, 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.
For Dolby TrueHD sources, set the Dynamic Range Control to "Auto".
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 M15 HD - MAIN MENU' .

DTS SETUP

Under this menu, the Dynamic Range Control of DTS Digital Surround can
be adjusted as well as the settings for DTS Neo: 6 Music.
Dyn Range Ctrl : This is the same configurable Dynamic Range Control
feature as described above at Dolby Setup, the only difference being
the soundtrack is now in DTS format.
DTS Neo: 6 Music : Please refer to the same description of 'NEO
6: Music' under the 'ADJUSTING LISTENING MODES' segment of the
'OPERATION - USING THE M15 HD - MAIN MENU' .
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DTS SURROUND MODES

The following are further descriptions about the DTS surround modes.
DTS-HD MASTER AUDIO
DTS-HD Master Audio is a technology that delivers master audio sources
recorded in a professional studio to listeners without any loss of data,
preserving audio quality. DTS-HD Master Audio adopts variable data
transfer rates, facilitating data transfer to the maximum rate of 24.5 Mbps
in the Blu-ray disc format, 18.0 Mbps in the HD-DVD format, which by
far exceeds that of a standard DVD. These high data transfer rates enable
lossless transmission of 96 kHz/24-bit 7.1-channel audio sources without
deteriorating the quality of the original sound. DTS-HD Master Audio is an
irreplaceable technology that can reproduce sound faithfully as intended
by the creator of music or movies.
DTS - ES EXTENDED SURROUND ™ (DTS ES)
This is a new multi-channel digital format which greatly improves the 360°
spatial sensation of the Surround impression thanks to the greater space
expansion of the surround signals, providing high compatibility with the
conventional DTS format.
In addition to the 5.1 channels, the expanded DTS-ES Surround also
offers the back surround (also sometimes called the "surround centre")
in reproduction, providing a total of 6.1 channels. The expanded DTS-ES
Surround includes two formats, with two different methods of surround
signal recording, as follows:
DTS-ES™ DISCRETE 6.1
Since the signals of the 6.1 Surround channels (including the back channel)
are completely independent, it is possible to achieve the sensation that the
acoustic image is moving about freely among the background sounds, 360
degrees surrounding the listener.
Although maximum quality is achieved with sound tracks recorded using
this system and reproduced using the DTS-ES decoder, when played with
a conventional DTS decoder, the back surround channel is automatically
downmixed in the surround right and surround left channels of the
surround system, in such a way that none of the signal components are
lost.