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Center delay, Surround delay – Dolby Laboratories DP564 User Manual

Page 47

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DP564 Multichannel Audio Decoder

Listening Room Calibration

5-3

Note: Left and Right speakers should be equidistant from the reference listening

position. If they are not, adjust the speaker positions.

In the calculations that follow:
L = the distance from the Left speaker to the reference listening position
C = the distance from the Center speaker to the reference listening position
R = the distance from the Right speaker to the reference listening position
S = the shorter of the distances from Ls or Rs to the reference listening position
Bs = the shorter of the distances from Bsl or Bsr to the reference listening position

5.2.1 Center

Delay

To calculate the setting for Center delay:
L – C = setting in ms for Center delay

Example 1: L=15; C=13. Center delay = L – C, or 15 – 13 = 2 ms
Example 2: L=15; C=18. Center delay = L – C, or 15 – 18 = –3 ms
Example 3: L=15; C=15. Center delay = L – C, or 15 – 15 = 0 ms

In example 1, C is two feet less than L or R, so Center delay is set to 2 ms. In
example 2, C is three feet more than L or R, set Center delay to –3 ms.
Example 3 shows that if C = L = R, Center delay should be set to 0 ms.

If you set a negative time value for Center delay, the DP564 actually sets Center
delay to 0 and adds corresponding delay time to the Left, Right, and Surround
outputs.

To enter the Center delay setting:

1. On the

Monitor Configuration

menu, select

Speaker Delays

,

then press

Enter

.

2. Press

Enter

again to go to the

Center Speaker Delay

menu.

3. Use the ▲▼ buttons to change the setting to match the value you calculated,

then press

Enter

.

5.2.2 Surround

Delay

To calculate the setting for Surround delay:
C – S = setting in ms for Surround delay

To enter the Surround delay setting:

1. On the

Monitor Configuration

menu, select

Speaker Delays

,

then press

Enter

.

2. Select

Ls/Rs

and press

Enter

to go to the

Main Surround Ls, Rs

menu.