Dolby Laboratories DP564 - Manual (Page 47)

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.