Kenwood KRF-V8090D Instruction Manual page 33

Ambience effects
Dolby Digital
The Dolby Digital surround format lets you enjoy up to 5.1
channels of digital surround sound from Dolby Digital program
sources (such as Laserdisc or DVD software marked
Compared with previous Dolby surround, Dolby Digital provides
even better sound quality, greater spatial accuracy, and improved
dynamic range.
Dolby Digital EX
Dolby Digital EX is an extension of Dolby Digital technology, Dolby
Digital EX creates six full-bandwidth output channels from 6.1-
channel sources. This is done using a matrix decoder that derives
three surround channels from the two in the original recording.
This is achieved by using three different surround signals, sur-
round left, surround right, and surround back, each driving its own
array of speakers. Think of it as adding a center channel for the rear
speakers, which give more diffuse and natural surround effect,
even if you wanted the ability to completely encircle the audience
with sound, positioning sound effects exactly where they would
be heard in real life. For best results, Dolby Digital EX should be
used with movie soundtracks recorded with Dolby Digital Sur-
round EX which contain a digital flag that will automatically
activate this feature. However, for titles released prior to late
2001, this feature has to be activated manually.
Although Dolby Digital soundtracks incorporate a separate low
frequency channel, connecting a subwoofer will also improve
deep bass performance in the other surround modes.
The indication "LFE" appears in the display when a signal is being
input for this channel.
Dolby Pro Logic II x and Dolby Pro Logic II
Dolby Pro Logic II was designed specifically to provide a new
sense of spatiality, directionality and articulation of sounds from
Dolby Surround encoded sources (such as video and Laserdisc
software marked
gent, built-in feedback logic design, a matrix surround decoding
and the decoding of stereo, full bandwidth surround outputs.
Dolby Pro Logic IIx enhanced Dolby Pro Logic II's features.
It creates 6.1 channel and 7.1 channel surround sound from stereo
or 5.1 channel signals. This feature provides you an astonishing
ambience effect which makes you feel you are surrounded by
natural sound. Especially 7.1 channel surround sound can produce
real back sound from Surround Back speakers.
The Pro Logic IIx modes programmed into this model are "Movie",
"Music" and "Game". The Pro Logic II modes programmed into
this model are "Movie", "Music", "Game" and "Pro Logic". The
"Movie" mode has preset characteristics to produce a calibrated,
high-level surround sound playback while the "Music" mode has
user-adjustable characteristics to offer the three optional controls,
like "Dimension", "Center Width" and "Panorama" modes to
allow optimization of the soundfields as desired. The "Dimen-
sion" control allows the user to gradually adjust the soundfield
either towards the front or towards the rear; the "Center Width"
control allows various adjustment of the left-center-right speak-
ers' balance; the "Panorama" mode extends the front stereo
image to include the surround speakers for an exciting "wrap-
around" effect with side wall imaging.
The "Game" mode provides surrounded and exciting sound when
you enjoy game or TV. Especially in Pro Logic IIx "Game" mode,
base sound not only from Front and Center but also from Surround
channel is added to Subwoofer. This provides ever more dynamic
surround effects.
). This is achieved with an intelli-
Dolby Virtual Speaker
The Dolby Virtual Speaker features a virtual surround sound field.
This implements an effect as if there are multiple speakers in the
).
listening room.
Dolby Headphone
When headphones are used in music listening, the audio of the left
(or right) channel reaches only the left (or right) ear so the listener
cannot feel the presence of acoustic images on the front.
The Dolby Headphone simulates a virtual room and include its
acoustic characteristics in the left and right headphone signals. As
a result, the listener can hear the same components as in speaker
listening through the left and right years and therefore feel as if the
sound source is located on the front of the listener.
Because of the same processing in "Pro Logic II Movie mode with
Dolby Headphone" and "Pro Logic II Game mode with Dolby
Headphone", their respective effectiveness is the same.
Note
LFE = Low Frequency Effects. This channel delivers separate
non-directional bass signals to the subwoofer for more dynamic
deep bass sound effects.
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