Yamaha RX-SL100RDS owner manual Editing Sound Field Parameters, What is a sound field

EDITING SOUND FIELD PARAMETERS

What is a sound field

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.

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For details on how to change parameter settings, see page 39.

■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

–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.

Sound field parameter descriptions

You can adjust the values of certain digital sound field parameters so the sound fields are recreated accurately in your listening room. Not all of the following parameters are found in every program.

	HALL	JAZZ	ROCK	ENTERTAIN	2
	1	2	3	4
	MUSIC TV THTR		MOVIE 1	MOVIE 2
	5	6	7	8
	q/DTS	NIGHT	EX/ES	STEREO
	9	0	+10	ENT
	TV	AV		EFFECT
				CODE SET
	REC	FREQ/RDS		EON
			s	AUDIO
	DISC SKIP	MODE PTY SEEK START
	w		e	f
	A/B/C/D/E		d PRESET u
	b	p		a
	TITLE			MENU
	LEVEL			SET MENU
	CH	ENTER		CH	3,4
	–			+
	RETURN			DISPLAY
	TEST
	TV VOL		VOLUME
		MUTE
1		AMP
	DVD/CD	VCR		VIDEO 1
	DTV/CBL	TUNER		VIDEO 2
	MUTE	INPUT	–	+
			CH
		TV MODE

RX-SL100

1Press AMP on the remote control.

AMP

2Press one of the sound field program group buttons to select the desired sound field program.

HALL JAZZ ROCK ENTERTAIN

1 2 3 4

MUSIC TV THTR MOVIE 1 MOVIE 2

5 6 7 8

q/DTS

9

INFORMATION	ADDITIONAL
English

49