# Audio delay calculator

### Give the tempo and the time signature

Express the length of the delay as fractions of the beat

### Beats/minute → msecs/beat

• Beats-per-minute: `120` BPM
• Beats-per-second: `2` Hz
• Length of 1 beat: `0.5` second = 500 msec
• Length of 1 bar (4 beats): `2` second
• ### Fraction → msecs

• Delay = 1 / 12 of a beat
• = Triplet note
• = `41.7` msecs
• ### Repeated delays

• delay syncs with the beat after 12 repetitions = 1 beats
• x 2 = 83 msecs
• x 3 = 125 msecs
• x 4 = 167 msecs
• x 5 = 208 msecs
• x 6 = 250 msecs
• x 7 = 292 msecs
• x 8 = 333 msecs
• x 9 = 375 msecs
• x 10 = 417 msecs
• x 11 = 458 msecs
• x 12 = 500 msecs
• #### Delay vs beat

 1 2 3 4
 ♩ ♩ ♩ ♩
 ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️ ↵️

• If you have a 135 BPM song and you want a phase modulation of 4 beats: that is 1777.6 sec
• If you have a 128 BPM song and you want an audio delay of 2/3 of a beat: this is 312.5 ms
• #### Music tools

Beats-per-minute
Convert BPM to Hz, bar length, fractions

Audio delay
Calculate audio delay length in msec

Song length
Calculate song length from BPM