Alpine PXA-H510 Owner's Manual page 28

Before Adjustment
English
Using time correction
(Continued)
Example
Here we calculate the time correction value for
the front right tweeter in the diagram at the left.
Conditions:
Farthest speaker – listening position: 2.25 m
Front right tweeter – listening position: 0.5 m
Calculation: L = 2.25 m – 0.5 m = 1.75 m
Time correction = 1.75 343 x 1000 = 5.1 (ms)
0.5m
2.25m
In other words, giving the front right tweeter a
time correction value of 5.1 ms makes it seem
as if the distance to the front right tweeter is the
same as the distance to the farthest speaker.
The sound is not balanced because the distance
between the listening position and the various
speakers is different.
The difference in distance between the front right
speaker and the rear left speaker is 1.75 m.
5.1ms
Time correction eliminates the differences in the
time required for the sound to reach the
listening position.
The time of the front right speaker is corrected
by 5.1 ms so that its sound reaches the
listening position at the same time as the sound
of other speakers.
28