•Dolby Surround
Dolby Surround uses a 4 channel analog recording system
to reproduce realistic and dynamic sound effects: 2 main left and right channels (stereo), a center channel for
dialog (monaural), and a rear channel for special sound
effects (monaural). The rear channel reproduces sound
within a narrow frequency range.
Dolby Surround is widely used with nearly all video tapes
and laser discs, and in many TV and cable broadcasts as well. The Dolby Pro Logic decoder built into this unit
employs a digital signal processing system that
automatically stabilizes the volume on each channel to enhance moving sound effects and directionality.
•Oolby Digital
Dolby Digital is a digital surround sound system that
gives you completely independent
stereo channels, Dolby Digital provides 5
channels. With an additional channel especially for bass
effects, called LFE (low frequency effect), the system has a total of 5.1 channels (LFE is counted as 0.1 channel).
By using
accurate moving sound effects and surround sound
environment are possible than with Dolby Surround. The
wide dynamic range (from maximum to minimum
volume) reproduced by the 5
precise sound orientation generated using digital sound
processing provide listeners with previously unheard of
excitement and realism.
With this unit, any sound environment from monaural up
to a
Dolby Digital EX creates 6
channels from
2 in the original recording. For the best results, Dolby Digital EX should be used with movie sound tracks recorded with Dolby Digital Surround EX. With this
additional channel, you can experience more dynamic and
realistic moving sound especially with scenes with "fly-
over" and
•Dolby Pro Logic 11
Dolby Pro Logic II is an improved technique used to decode vast numbers of existing Dolby Surround
softwares. This new technology enables a discrete 5-
channel playback with 2 main left and right channels, 1 center channel, and 2 rear left and right channels (instead
of only 1 rear channel for conventional Pro Logic
technology). A music mode is also available for
•DTS (Digital Theater Systems)
Digital Surround
DTS digital surround was developed to replace the analog
soundtracks of movies with a
track, and is now rapidly gaining popularity in movie theaters around the world. Digital Theater Systems Inc.
has developed a home theater system so that you can enjoy the depth of sound and natural spatial
representation of DTS digital surround in your home.
This system produces practically
sound (technically, a left, right and center channels, 2 rear channels, plus an LFE 0.1 channel as a subwoofer, for a total of 5.1 channels).
The unit incorporates
enables
center channel to existing
•LFE 0.1 channel
This channel is for the reproduction of low bass signals. The frequency range for this channel is 20 Hz to 120 Hz. This channel is counted as 0.1 because it only enforces a
low frequency range compared to the
reproduced by the other 5 channels in a Dolby Digital or DTS 5.1 channel systems.
•CINEMA DSP
Since the Dolby Surround and DTS systems were
originally designed for use in movie theaters, their effect is best felt in a theater having many speakers and
designed for acoustic effects. Since home conditions,
such as room size, wall material, number of speakers, and so on, can differ so widely, it's inevitable that there are
differences in the sound heard as well. Based on a wealth
of actually measured data, YAMAHA CINEMA DSP uses
YAMAHA original sound field technology to combine Dolby Pro Logic, Dolby Digital and DTS systems to
provide the visual and audio experience of movie theater in the listening room of your own home.
•SILENT CINEMA
YAMAHA has developed a natural, realistic sound effect DSP algorithm for headphones.
Parameters for headphones have been set for each sound
field so that accurate representations of all the sound field programs can be enjoyed using headphones.
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