Delay Time for Tempo
Milliseconds per beat, used to sync echo/delay effects to a song.
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Example
128 BPM: t = 60000/128 ≈ 469 ms
How it works
This formula converts tempo, measured in beats per minute, into the time duration of one beat in milliseconds. Because there are 60,000 milliseconds in one minute, dividing 60,000 by the number of beats per minute gives the length of each beat, which is especially useful when setting delay times to line up rhythmically with a song. For quarter-note-synced effects, the result tells you the delay interval for one beat.
When to use it
Use this when you want a delay, echo, or slapback effect to stay in time with a track’s tempo. It is also useful in music production, live sound, and rhythmic practice when converting BPM into a time value for a single beat.
Worked example, step by step
Tempo = 90 BPM Use the formula: t_ms = 60000 / BPM Substitute the value: t_ms = 60000 / 90 Calculate: t_ms = 666.666... Rounded to the nearest millisecond: t_ms ≈ 667 ms So, one quarter-note beat lasts about 667 milliseconds at 90 BPM.
Common mistakes to avoid
- Using 600 instead of 60000, which gives a result that is far too small
- Entering beats per second instead of beats per minute
- Forgetting to round appropriately when setting a delay time on audio gear
Did You Know?
Producers divide this figure to get eighth- and sixteenth-note delays that lock perfectly to the groove.
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