# Audio delay calculator

### Give the tempo and the time signature

Express the length of the delay as fractions of a bar

Beats per minute
160BPM
Beats per bar
4 beats
Delay fraction
9/16 bar

Length of 1 beat
0.375 sec
2.667 Hz
Length of 1 bar
1.5 sec
0.667 Hz
Delay length
0.844 sec
1.185 Hz

### Repeated delays

A repeated delay syncs with the beat after 16 delays = 9 bars

1 reps
9/16
`843.8 ms`
2 reps
9/8
`1687.5 ms`
3 reps
27/16
`2.531 sec`
4 reps
9/4
`3.375 sec`
5 reps
45/16
`4.219 sec`
6 reps
27/8
`5.063 sec`
7 reps
63/16
`5.906 sec`
8 reps
9/2
`6.75 sec`
9 reps
81/16
`7.594 sec`
10 reps
45/8
`8.438 sec`
11 reps
99/16
`9.281 sec`
12 reps
27/4
`10.125 sec`
13 reps
117/16
`10.969 sec`
14 reps
63/8
`11.813 sec`
15 reps
135/16
`12.656 sec`
16 reps
9
`13.5 sec`

### Visualized

 1 bar 2 bars 3 bars 4 bars 5 bar 6 bars 7 bars 8 bars ♩ ♩ ♩ ♩ ♩ ♩ ♩ ♩
 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

If you have a 135 BPM song, and you want a phase modulation of 4 beats (1 bar): that is 1777.6 ms
If you have a 128 BPM song, and you want an audio delay of 2/3 of a beat: this is 312.5 ms

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