Yamaha RX-V450 Editing Sound Field Parameters, What is a sound field, 2 3,4, Early reflections

Models: RX-V450

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EDITING SOUND FIELD PARAMETERS

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

 

 

 

 

 

 

 

English

 

 

 

 

57

Page 59
Image 59
Yamaha RX-V450 Editing Sound Field Parameters, What is a sound field, 2 3,4, Elements of a sound field, Early reflections