Yamaha RX-V757 EDITING SOUND FIELD PARAMETERS, What is a sound field, Changing parameter settings, ■Elements of a sound field, mode, Press AMP, 1Press AMP, Reverberations

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.

■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 ar e 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.

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.

	TRANSMIT		RE-NAME CLEAR	LEARN		REC
								AUDIO
	SYSTEM	STANDBY	SLEEP	INPUT MODE		DISC SKIP
	POWER
									VOL
	A	B	PHONO	MULTI CH IN
	V-AUX	TUNER	MD/CD-R	CD		LEVEL	PRESET/CH	SET MENU	MUTE
						TITLE	TV VOL	MENU		4
						BAND		SRCH MODE
	DTV/CBL	VCR 1	DVR/VCR2	DVD		TV INPUT
						CH	TV MUTE	CH A-E/CAT.
					5		ENTER			2
				SELECT			TV VOL	ON SCREEN	STRAIGHT
						RETURN		DISPLAY
						MEMORY			EFFECT	3
	POWER		POWER	AMP		STEREO	MUSIC	ENTERTAIN	MOVIE
	TV		AV			1	2	3	4
1						STANDARD	SELECT	EXTD SUR. PURE DIRECT
	REC					5	6	7	8
						A SPEAKERS B			NIGHT
						9	0	10	ENT.
									CHP/INDEX

1Press AMP.

AMP

2Turn on the video monitor and

press ON SCREEN repeatedly	ON SCREEN
	DISPLAY
to select the full display
mode.

3Select the sound field program you want to adjust.

STEREO	MUSIC	ENTERTAIN	MOVIE
1	2	3	4
STANDARD	SELECT	EXTD SUR.	PURE DIRECT
5	6	7	8
A SPEAKERS B			NIGHT
9	0	10	ENT.
			CHP/INDEX

Program No. Program name

P04 MOVIE THEATER

Cursor .




General

DSP
LEVEL;;;;0dB

P.INIT.DLY;;15ms

P.ROOM
SIZE;;1.0

S.INIT.DLY;;20ms

S.ROOM
SIZE;;1.0

Parameters Parameter values

86