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60 seconds × 1000 ms divided by beats per minute gives one quarter note duration in milliseconds.
Delay (ms) = 60,000 ÷ BPMDivide or multiply quarter note delay by subdivision ratio for syncopated delay patterns.
Eighth = Quarter ÷ 2 | Dotted eighth = Quarter × 0.75 | Triplet eighth = Quarter ÷ 3Classic rockabilly slapback uses 60–120 ms regardless of tempo — not tempo-synced but historically important delay range.
Slapback = 60–120 ms (tempo-independent)Updated: July 2026
Quarter = 500 ms. Dotted eighth = 375 ms — classic U2/The Edge style arpeggiated delay pattern.
667 ms delay for spacious, obvious rhythmic echo on vocal or guitar in slow ballad.
Quarter = 429 ms. Triplet eighth = 143 ms — fast shimmer delay for dense mix textures.
Tempo-synced delay effects require precise millisecond timing derived from BPM. Enter song tempo and note value to calculate delay time for quarter notes, eighth notes, dotted eighths, triplets, and other rhythmic subdivisions.