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A sound field is defined as lhe "characleristic sound reflections of a
particular space:' In concert halls and other music venues, we hear
early reflections and reverberations as well as the direct sound
produced by the arlist(s). The variations in the early reflections and
other reverberations among the different music venues is what gives
each venue its special and recognizable sound quality.
YAMAHA sent teams of sound engineers all around the world to
measure the sound reflections of famous concert halls and music
venues, and collect detailed sound field information such as the
direction, strength, range, and delay time of those reflections. Then
we stored this enormous amount of data in the ROM chips of this
unit.
• Recreating a sound field
Recreating the sound field of a concert hall or an opera house requires localizing the virtual sound sources in your
listening room. The traditional stereo system that uses only two speakers is not capable of recreating a realistic sound
field. YAMAHA's DSP requires four effect speakers to recreate sound fields based on the measured sound field data.
The processor controls the strength and delay time of the signals output from the four effect speakers to localize the
virtual sound sources and fully encompass the listener.
The following list gives you a brief description of the sound fields produced by each of the DSP programs. Keep in
mind that most of these are precise digital recreations of actual acoustic environments.
No. Program Features
1 CONCERT HALL A large round concert hall with a rich surround eft_ct. Pronounced reflections from all directions
emphasize the extension of sounds. The sound field has a great deal of presence, and your virtual
seat is near the center, close to the stage.
2 JAZZ CLUB This is the sound field at stage front in "The Bottom Line", a famous New York jazz club, that
seats up to 300 people. Its wide leli to right seating arrangement offers a real and vibrant sound.
3 ROCK CONCERT The ideal program for lively, dynamic rock music. The data lbr this program was recorded at LA's
"hottest" rock club. The listener's virtual seat is at the center-lel_ of the hall.
4 ENTERTAINMENT/ This program recreates the acoustic environment of a lively disco in the heart of a big city. The
DIsco sound is dense and highly concenU'ated. It is also characterized by a high-energy, "immediate"
sound.
ENTERTAINMENT/ Using this program increases the listening position range. This is a sound field suitable tk)r
6ch Stereo background music at parties, etc.
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