Ambience effects

C-V351/C-V301 (EN)

How to calculate the proper delay time

Assuming that the distance from the front speakers is A meters and that from the surround speakers is B meters:

What is delay time?

Front

speakers

Am

Bm

Surround speakers

1Use the delay time calcula- tion chart on the right.

Example:

When A = 3 m,B = 3 m, the delay time is 20 ms.

2 Use the following 8

7

formula for calculation. 6 5

Delay time =

A (m)

20 + 3 ⋅ (A - B) (Unit: ms)

 

23

20

17

 

37

 

 

 

26

23

20

16

 

29

 

17

 

 

26

23

20

16

 

 

29

 

17

 

 

26

23

20

16

 

 

29

 

17

 

 

26

23

20

16

 

8

29

20

17

 

26

23

 

16

 

7

29

 

17

 

6

26

 

20

16

 

5

4

23

 

17

 

4

3

 

20

 

3

B (m)

2

 

 

2

 

1

 

 

 

 

 

1

 

 

The sound entering the ears include the direct sound coming from the sound source and the indirect sounds reflected from the walls, floor, ceiling, etc. The indirect sounds are delayed because they travel longer distance required for reflection before they reach the ears. The delay time is the difference in time between the direct sound and indirect sounds.

3Adjust the level from each speaker. “Test Tone”

RC

GRC

1Output the ”Test Tone“.

TEST

Test Tone

TONE

 

ENTER

 

Test Tone

 

ENTER

2Adjust the levels of the other speakers than the front speakers (left, right).

MULTI

To increase

(1)While test tone is output from a speaker,

level

(2)Adjust the volume level of the speaker.

CONTROL

 

÷The test tone which sounds like noise move across speakers in the following sequence every 1.5 second.

(In Pro Logic mode)

TEST Lch (Front speaker, Left)

TEST Cch (Center speaker)

TEST Rch (Front speaker, Right) TEST SRch (Surround speaker, Right) TEST SLch (Surround speaker, Left)

(In 3 STEREO mode)

TEST Lch (Front speaker, Left)

TEST Cch (Center speaker)

TEST Rch (Front speaker, Right)

 

 

Channel

LEVEL

 

Level

To decrease

SL+10dB

 

 

level

 

 

 

ENTER

To decrease level

3Quit the speaker level adjustment.

TEST

Test Tone

TONE

 

ENTER

 

Return

 

ENTER

To increase level

T E s T s Rc h

Display when test tone is output from a surround speaker

÷Be sure to adjust from the listening position.

÷Each press of the key increases or decrease the level by 1 dB.

÷The levels of the front speaker (Left, Right) cannot be varied in step 3.

4Adjust the delay time. “DELAY”

RC

GRC

1Select the Delay Time adjustment display.

MODE

Delay Time

ENTER

2Adjust the Delay Time.

To increase

MULTI

CONTROL

 

Delay Time

 

 

20msec

LEVEL

To decrease

To increase

 

ENTER

To decrease

3Quit the delay time adjustment.

Return

ENTER

RC/Main unit

Each press switches the adjustment items as shown below.

1 BASS

:Tone, Bass

2 TREBLE

:Tone, Treble

3L- - - - - - -R :Balance
4 C ch

:Center speaker

5SR ch :Surround speaker, Right

6 SL ch

:Surround speaker, Left

7 SW ch

:Subwoofer

8 DELAY

:Delay time

9 INPUT

:Input level

÷Adjustment items 5, 6 and 8 are not required in the 3 STEREO mode.

÷Find the optimum delay time for the listening room by referring to “How to calculate the delay time”.

÷The delay time in the PRO LOGIC mode can be adjusted between 15 and 30 ms.

÷Select the closest value to the value obtained by “How to calculate the delay time”.

D E L A Y

 

2 ) ms

 

 

Delay time