Yamaha RX-V450 Editing Sound Field Parameters, What is a sound field, Elements of a sound field

EDITING SOUND FIELD PARAMETERS

What is a sound field Changing parameter settings

What really creates the rich, full tones of a live instrument are the multiple reflections from the walls of the room. In addition to making the sound “live”, these reflections enable us to tell where the player is situated, and the size and shape of the room in which we are sitting.

You can enjoy good quality sound with the factory preset parameters. Although you do not have to change the initial settings, you can change some of the parameters to better suit the input source or your listening room.

■Elements of a sound field

In any environment, in addition to the direct sound coming straight to our ears from the player’s instrument, there are two distinct types of sound reflections that combine to make up the sound field:

Early reflections

Reflected sounds reach our ears extremely rapidly (50 ms

				SYSTEM
	POWER	POWER	STANDBY	POWER
	TV	AV
	CD	MD/CD-R	TUNER	SLEEP
	DVD	DTV/CBL	VCR	V-AUX
	REC			MULTI CH IN
			AUDIO
	DISC SKIP			CODE SET
1	FREQ/RDS		EON	AMP
	MODE	PTY SEEK	START

TV VOL	TV CH	VOLUME
TV MUTE	TV INPUT
		MUTE
STEREO	HALL	JAZZ	ROCK
1	2	3	4
MUSIC	ENTERTAIN	TV THTR	MOVIE
5	6	7	8
q/DTS	NIGHT	EX/ES	STRAIGHT
9	0	10	ENTER

LEVEL	SET MENU
TITLE	MENU
	A/B/C/D/E
	SELECT
TEST
RETURN	DISPLAY
	PRESET/CH

2

3,4

–100 ms after the direct sound), after reflecting from one surface only — for example, from the ceiling or a wall. Early reflections actually add clarity to the direct sound.

Reverberations

These are caused by reflections from more than one surface — walls, ceiling, the back of the room — so numerous that they merge together to form a continuous sonic “afterglow”. They are non-directional, and lessen the clarity of the direct sound.

Direct sound, early reflections and subsequent reverberation taken together help us to determine the subjective size and shape of the room, and it is this information that the digital sound field processor reproduces in order to create sound fields.

If you could create the appropriate early reflections and subsequent reverberations in your listening room, you would be able to create your own listening environment. The acoustics in your room could be changed to those of a concert hall, a dance floor, or virtually any size room at all. This ability to create sound fields at will is exactly what YAMAHA has done with the digital sound field processor.

1Press AMP.

AMP

2Select the sound field program you want to adjust.

MUTE

STEREO	HALL	JAZZ	ROCK
1	2	3	4
MUSIC	ENTERTAIN	TV THTR	MOVIE
5	6	7	8
q/DTS	NIGHT	EX/ES	STRAIGHT
9	0	10	ENTER
LEVEL			SET MENU

3Press u / d to select

the parameters.

SELECT

PRESET/CH

4Press j / i to change

the parameter value.

SELECT

PRESET/CH

INFORMATION	ADDITIONAL
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