Delay & Reverb Times Calculator

About the Delay & Reverb Times Calculator

The Delay & Reverb Times Calculator converts BPM (beats per minute) into precise millisecond values for every musical note subdivision. When delay and reverb effects are synced to the song's tempo, they create rhythmic cohesion rather than muddy artifacts — transforming a good mix into a professional one.

Music producers and mix engineers rely on tempo-synced effects to keep delays and reverbs musically in time. A quarter-note delay at 120 BPM is exactly 500ms, but working out dotted eighth notes, triplets, and other subdivisions by hand is tedious. This calculator does it for all common note values.

Enter your song's BPM and get a complete table of straight, dotted, and triplet delay times in milliseconds. The calculator also provides recommended pre-delay times for reverb, frequency values for modulation effects, and common production presets used in various genres. It is a fast way to convert a tempo into exact mix timings without reaching for a second calculator. The result is a tempo reference that works for both effects and modulation sync.

When This Page Helps

Use this calculator when you need a quick reference for delay, pre-delay, or modulation timing at a specific BPM. It keeps time-based effects aligned to the grid without manual conversion. That makes it easier to stay musical when you are mixing on a deadline and avoid off-grid effects. It also saves time when you are copying values into multiple plugins.

How to Use the Inputs

1. Enter the song tempo in BPM (beats per minute)
2. View all note value delay times in milliseconds
3. Find your desired subdivision: straight, dotted, or triplet
4. Copy the millisecond value into your delay plugin
5. Use the pre-delay section for reverb settings
6. Try the genre presets for quick starting points
7. Use the Hz values for LFO and modulation sync

Example Calculation

Tips & Best Practices

• Dotted eighth-note delay is the "bread and butter" for modern mixing — try it first
• Use shorter subdivisions (16th, 32nd) for subtle rhythmic textures and slapback effects
• Slightly offset your delay time by ±5-10ms for a more organic, less mechanical sound
• For reverb pre-delay, sync to 1/64 or 1/32 note values to keep timing musical
• Use the Hz values for syncing tremolo, vibrato, and other modulation effects to tempo
• Ping-pong delays using dotted values create wide, rhythmic stereo effects

Tempo-Synced Effects in Music Production

Modern music production relies heavily on tempo-synced effects to create professional, cohesive mixes. When delays and modulation effects are locked to the song's grid, they enhance the rhythm rather than fighting it. This is particularly important in genres like EDM, pop, and ambient music where effects are featured prominently.

Digital Audio Workstations (DAWs) often include sync options in their stock plugins, but many third-party plugins and hardware effects require manual millisecond input. Having a quick reference for all note subdivisions at your working tempo is an essential production tool.

Understanding Note Subdivisions

Musical time is divided into hierarchical subdivisions. A whole note (4 beats) subdivides into half notes, quarter notes, eighth notes, sixteenth notes, and so on — each half the duration of the previous. Dotted notes add 50% to the base duration, creating a longer, bouncing rhythm. Triplets divide a beat into three equal parts instead of two, creating swing and shuffle feels.

Reverb Pre-Delay Guidelines

Pre-delay is one of the most important reverb parameters for maintaining mix clarity. Too little pre-delay and the reverb obscures the transient; too much and the reverb feels disconnected. A good starting point is 20-30ms for vocals, 10-20ms for drums, and 30-50ms for instruments. Syncing pre-delay to a musical subdivision (like a 1/64 note) ensures the reverb onset aligns with the tempo grid.

Frequently Asked Questions

• What delay time sounds best?

  Dotted eighth notes are the most popular delay subdivision — they create a rhythmic bounce that fills spaces between notes without clashing. Quarter-note delays work well for ballads and slower tempos. Experiment with triplet times for swing or shuffle feels.

• What is pre-delay on reverb?

  Pre-delay is the time between the dry signal and the onset of reverb reflections. It separates the direct sound from the reverb, improving clarity. Typical values: 10-30ms for intimate spaces, 30-60ms for rooms, 50-100ms for halls.

• Should delay always be synced to tempo?

  Not always. Synced delays create rhythmic effects; unsynced delays can sound more natural and spacious. Many engineers use slightly offset times (e.g., 510ms instead of 500ms) for a more organic feel.

• What's the difference between dotted and triplet delays?

  Dotted notes are 1.5× the straight value (longer), creating a bouncing feel. Triplet notes are 2/3 the straight value (shorter), creating a swung or shuffled feel. They produce very different rhythmic characters.

• How do I set delay feedback?

  Feedback controls how many delay repeats occur. 0% = single echo, 50% = several repeats, 100% = infinite (careful!). For most mixes, 20-40% feedback works well. Higher feedback creates atmospheric, ambient effects.

• What is the Haas effect?

  The Haas effect uses very short delays (10-35ms) to create a sense of width without an audible echo. Pan the dry signal and delayed signal to opposite sides. Delays under ~40ms are perceived as a single sound but wider.