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Example 1: Front Left Seat
0.5m
2.25m
Conditions:
Farthest Speaker - listening position : 2.25 m (88-9/16")
Front left speaker - listening position : 0.5 m (19-11/16")
Calculation: L = 2.25 m - 0.5 m = 1.75 m (68-7/8")
Time correction = 1.75 ÷ 343
Speed of sound: 343 m/s (765 mph) at 20°C
Example 2: All Seats
1
Sit in the listening position (driver's seat, etc.) and
measure the distance (in meters) between your head and
the various speakers.
2
Calculate the difference between the distance correction
value to the farthest speaker and the other speakers.
L = (distance to farthest speaker) - (distance to other speakers)
These values are the time correction values for the different
speakers. Setting these values to make each sound reach the
listening position at the same time as the sound of other
speakers.
Time Correction Value List
Delay
Time Differ-
Number
ence (ms)
0
0.0
1
0.1
2
0.2
5.1ms
*1
× 1000 = 5.1 (ms)
Distance
Distance (cm)
(inch)
0.0
0.0
3.4
1.3
6.8
2.7
Delay
Time Differ-
Number
ence (ms)
3
0.3
4
0.4
5
0.5
6
0.6
7
0.7
8
0.8
9
0.9
10
1.0
11
1.1
12
1.2
13
1.3
14
1.4
15
1.5
16
1.6
17
1.7
18
1.8
19
1.9
20
2.0
21
2.1
22
2.2
23
2.3
24
2.4
25
2.5
26
2.6
27
2.7
28
2.8
29
2.9
30
3.0
31
3.1
32
3.2
33
3.3
34
3.4
35
3.5
36
3.6
37
3.7
38
3.8
39
3.9
40
4.0
41
4.1
42
4.2
43
4.3
44
4.4
45
4.5
46
4.6
47
4.7
48
4.8
49
4.9
50
5.0
51
5.1
52
5.2
53
5.3
Distance
Distance (cm)
(inch)
10.2
4.0
13.6
5.4
17.0
6.7
20.4
8.0
23.8
9.4
27.2
10.7
30.6
12.1
34.0
13.4
37.4
14.7
40.8
16.1
44.2
17.4
47.6
18.8
51.0
20.1
54.4
21.4
57.8
22.8
61.2
24.1
64.6
25.5
68.0
26.8
71.4
28.1
74.8
29.5
78.2
30.8
81.6
32.2
85.0
33.5
88.4
34.8
91.8
36.2
95.2
37.5
98.6
38.9
102.0
40.2
105.4
41.5
108.8
42.9
112.2
44.2
115.6
45.6
119.0
46.9
122.4
48.2
125.8
49.6
129.2
50.9
132.6
52.3
136.0
53.6
139.4
54.9
142.8
56.3
146.2
57.6
149.6
59.0
153.0
60.3
156.4
61.6
159.8
63.0
163.2
64.3
166.6
65.7
170.0
67.0
173.4
68.3
176.8
69.7
180.2
71.0
35
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