Mixing Audio, 4th Edition

Appendix C Delay time chart

Delay times can be easily calculated. For time signatures involving quarter-note beats (4/4, 3/4, etc.), a quarter-note delay in seconds is calculated using 60/bpm. For example, at 120 bpm, a quarter-note delay would be 60/120, or 0.5 seconds, which is 500 ms. Milliseconds are far more common in delay units: using the calculation 60,000/bpm would give the result in milliseconds. A half-note delay is twice as long as a quarter-note delay for the same bpm, and an eighth-note delay is half the quarter-note delay. For example, a half-note delay at 120 bpm would be 1,000 ms, and an eighth-note delay would be 250 ms.

Simple note values

The following table includes delay times for various simple note values at 80–190 bpm. ...