Yamaha GX707 - Manual (Page 44)

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Various sound control
Sound field processor
The Sound Field Processor built into this system enables you to enjoy listening to a source with an ambience of actual
concert hall or three-dimensional acoustics. This system provides preset sound field programs shown below. You can enjoy
an excellent sound field by selecting any one of them and by adding any other desired adjustments.
This system also incorporates a Dolby Pro Logic Surround decoder for multi-channel sound reproduction of Dolby
Surround encoded video sources. The operation of the Dolby Pro Logic Surround decoder can be controlled by selecting a
corresponding sound field program.
■ Sound field programs
Program
PRO LOGIC
3 STEREO
YMERSION
HALL
Feature
This program is used for playing sources encoded with Dolby Surround.
Dolby Pro Logic Surround uses four discrete channels and five speakers to reproduce realistic and dynamic sound
effects: two main channels (left and right), a center channel for dialogue, and a rear channel for special sound
effects. The rear channel reproduces sound within a narrow frequency range.
This program is used for simplified play of Dolby Surround encoded sources. With this program, sound effects are
outputted from the front left and right speakers and no sound from the rear speakers.
YMERSION is Yamaha’s proprietary technology that enhances the spread of a normal stereo source play sound,
creating three-dimensional acoustics using only two speakers.
This program presents you with an ambience of actual concert hall by adding effects as sonic reflections or
reberverations that create sound environment of a hall. Sound effects are outputted from the front and rear speakers.
Orchestra and opera music is suited for this sound field.
DOLBY SURROUND
P R O • L O G I C
Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of
Dolby Laboratories. Confidential Unpublished Works. ©1992–1997 Dolby Laboratories, Inc. All rights reserved.