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The AVR-890 is equipped with a digital signal processing circuit that
lets you play program sources in the surround mode to achieve the
same sense of presence as in a movie theater.
Dolby Digital
Dolby Digital is a multichannel digital signal format developed by Dolby
Laboratories.
A total of 5.1-channels are played: 3 front channels (“FL” , “FR” and
“C”), 2 surround channels (“SL” and “SR”) and the “LFE” channel for
low frequencies.
Because of this, there is no crosstalk between channels and a realistic
sound field with a “three-dimensional” feeling (sense of distance,
movement and positioning) is achieved.
A real, overpowering sense of presence is achieved when playing
movie sources in AV rooms as well.
Dolby Digital Plus
Dolby Digital Plus is an improved Dolby Digital signal format that is
compatible with up to 7.1-channels of discrete digital sound and also
improves sound quality thanks to extra data bit rate performance. It
is upwardly compatible with conventional Dolby Digital, so it offers
greater flexibility in response to the source signal and the conditions
of the playback equipment.
Dolby TrueHD
Dolby TrueHD is a high definition audio technology developed by Dolby
Laboratories, using lossless coding technology to faithfully reproduce
the sound of the studio master.
This format is compatible with a maximum sampling frequency of 96
kHz and up to 7.1-channels, so it is used for applications particularly
prioritizing sound quality.
Dolby Pro Logic
g
x
Dolby Pro Logic
g
x is a further improved version of the Dolby Pro Logic
g
matrix decoding technology.
Audio signals recorded in 2-channels are decoded to achieve a natural
sound with up to 7.1-channels.
There are 3 modes: “Music” suited for playing music, “Cinema”
suited for playing movies, and “Game” which is optimized for playing
games.
Dolby Pro Logic
g
Dolby Pro Logic
g
is a matrix decoding technology developed by Dolby
Laboratories.
Regular music such as that on CDs is encoded into 5-channels to
achieve an excellent surround effect.
The surround channel signals are converted into stereo and full band
signals (with a frequency response of 20 Hz to 20 kHz or greater)
to create a “three-dimensional” sound image offering a rich sense of
presence for all stereo sources.
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks of
Dolby Laboratories.
Dolby Digital EX
Dolby Digital EX is a 6.1-channel surround format proposed by Dolby
Laboratories that allows users to enjoy in their homes the “DOLBY
DIGITAL SURROUND EX” audio format jointly developed by Dolby
Laboratories and Lucas Films.
The 6.1 channels of sound, including surround back channels, provide
improved sound positioning and expression of space.
Surround
Dolby Surround
Dolby Pro Logic
g
z
Dolby Pro Logic
g
z introduces a new dimension to Home Entertainment
through the addition of a pair of front height channels. Compatible with
stereo, 5.1 and 7.1 content, Dolby Pro Logic
g
z provides enhanced
spaciousness, depth and dimension to movies, concert video and
videogame playback while maintaining the full integrity of the source
mix.
Dolby Pro Logic
g
z identifies and decodes spatial cues that occur
naturally in all content, directing this information to the front height
channels, complementing the performance of left and right surround
sound speakers. Content that is encoded with Dolby Pro Logic
g
z height channel information can be even more revealing, with
perceptually discrete height channel information bringing an exciting
new dimension to home entertainment. Dolby Pro Logic
g
z, with
front height channels is also an ideal alternative for households that
cannot support the placement of back surround speakers of a typical
7.1 channel system but may have bookshelf space available to support
the addition of height speakers.
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