Yamaha RX-V2200 DIGITAL SOUND FIELD PROCESSING (DSP), Understanding Sound Fields, Hi-FiDSP Programs, ■Recreating a sound field, No, Disco, CHURCH, Program, Features, JAZZ CLUB

DIGITAL SOUND FIELD PROCESSING (DSP)

Understanding Sound Fields

A sound field is defined as the “characteristic 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 artist(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 in a full circle around the listener.

Hi-Fi DSP Programs

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 1	This is a large fan-shaped concert hall which has approximately 2500 seats. Almost the whole
		interior is made of wood. There is relatively little reflection from the walls, and sound spreads
		finely and beautifully.
2	CONCERT HALL 2	A large round concert hall with a rich surround effect. 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.
3	CHURCH	This program recreates the acoustic environment of a big church with a high dome and columns
		along each side. The reverberation delay is very long while the early reflections are smaller than
		with other sound field programs.
4	JAZZ CLUB	This is the sound field at stage front in “The Bottom Line”, a famous New York jazz club. The
		floor can seat 300 people to the left and right in a sound field offering a real and vibrant sound.
5	ROCK CONCERT	The ideal program for lively, dynamic rock music. The data for this program was recorded at
		LA’s “hottest” rock club. The listener’s virtual seat is at the center-left of the hall.
6	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 concentrated. 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 for
	6ch Stereo	background music at parties.

OPERATION BASIC

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