All free tools/Pre-delay in ms

Reverb Pre-Delay

Tempo-locked reverb pre-delay timings.

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Tempo-synced pre-delay
Live
Project tempo
BPM
6080100120140160180200
Pre-delay timesTime before reverb tail kicks in
NoteNormalDottedTriplet
1/128 Ultra-short14.6 ms22.0 ms9.8 ms
1/64 Tight29.3 ms43.9 ms19.5 ms
1/32 Vocal slap58.6 ms87.9 ms39.1 ms
1/16 Medium117.2 ms175.8 ms78.1 ms
1/8 Long234.4 ms351.6 ms156.3 ms
Reverb tail length
Decay synced to bars
1/2 bar
0.94sec
1 bar
1.88sec
2 bars
3.75sec
4 bars
7.50sec

Why pre-delay matters

Pre-delay is the gap between the dry signal and the start of the reverb tail. Without it, the reverb crowds the source and washes out transients. Tempo-syncing keeps reverb tails rhythmically tight.

Common settings

  • Vocals — 1/32 or 1/16 normal. Keeps consonants clean.
  • Snare — 1/64 to 1/32. Short, snappy slap.
  • Pads / synths — 1/16 to 1/8. Long and lush.
  • Drum bus — try dotted values for swing-feel.

The math

Quarter = 60,000 ÷ BPM

1/32 = quarter ÷ 8. 1/64 = quarter ÷ 16.

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