# 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 = 3 / 16 of a beat
• = Dotted 1/8 note
• = `93.8` msecs
• ### Repeated delays

• delay syncs with the beat after 16 repetitions = 3 beats
• x 2 = 188 msecs
• x 3 = 281 msecs
• x 4 = 375 msecs
• x 5 = 469 msecs
• x 6 = 563 msecs
• x 7 = 656 msecs
• x 8 = 750 msecs
• x 9 = 844 msecs
• x 10 = 938 msecs
• x 11 = 1031 msecs
• x 12 = 1125 msecs
• x 13 = 1219 msecs
• x 14 = 1313 msecs
• x 15 = 1406 msecs
• x 16 = 1500 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
Music Frequency
Convert pitch to musical note and wavelength
Song length
Calculate song length from BPM
Music Scale
Generate scales with frequencies