Delay and Modulation Effects Guide
Every delay type and modulation effect explained for producers and musicians. 24 free guides covering slapback, dotted eighth, chorus, flanger, phaser, reverb, and more.
Step 1: Calculate exact delay times for your BPM
Enter your track BPM to get precise millisecond values for every note subdivision - then apply them using these guides.
Open Delay CalculatorDelay Effects
Time-based effects that create distinct echoes, repeats, and spatial depth. Each delay type has a specific production role based on timing and feedback settings.
Classic rockabilly and country vocal doubling effect. Single echo with no repeats.
The most popular synced delay in pop and electronic production. Creates rhythmic triplet-feel echoes.
Echoes bounce between left and right channels for dramatic stereo width. Check mono compatibility.
Vintage tape echo with frequency filtering, wow/flutter, and naturally degrading repeats.
Psychoacoustic stereo widening. Sub-35ms delay fuses with the dry signal to create a wider stereo image.
Gap between dry signal and reverb onset. Keeps transients clear while adding spaciousness.
Reverb Effects
Reverberation simulates acoustic spaces. Understanding reverb types and settings is essential for mixing any genre.
Complete guide to reverb parameters. Room, hall, plate, spring types with settings for every instrument and genre.
Explains the difference between reverb and delay and when to choose one over the other in a mix.
Modulation Effects
LFO-driven effects that create movement, width, and character. All six major modulation types explained with settings guides and genre applications.
Creates an ensemble sound from a single instrument. Rate, depth, mix settings for guitar, bass, synths, and vocals.
Jet-sweep comb filter effect. Feedback guide, through-zero flanging, and famous guitar tones from Heart to Van Halen.
Notch-sweep effect using all-pass filters (no delay). Mono-safe. Stages guide, MXR Phase 90 settings, Rhodes/guitar tones.
Rhythmic volume cycling. BPM sync guide, waveform shapes (sine/triangle/square), tremolo vs vibrato explained.
Pitch cycling LFO effect. Fender naming confusion explained, onset delay trick, guitar and vocal settings.
Stereo widening using sub-35ms delay. Also grouped here since it uses delay as modulation for width without audible echo.
Modulation Effects: Quick Comparison
All six modulation effects use an LFO, but the mechanism, delay range, and sound character are very different.
| Effect | Mechanism | Delay Range | Feedback | Mono Safe | Famous Use |
|---|---|---|---|---|---|
| Chorus | LFO pitch delay | 5-30ms | Low or none | Check mix | Come As You Are (guitar) |
| Flanger | LFO delay + feedback | 1-10ms | High (key param) | Comb filter | Heart Barracuda (guitar) |
| Phaser | All-pass filters (no delay) | None | Resonance setting | Yes | Van Halen Eruption |
| Tremolo | LFO volume (amplitude) | None (amplitude) | None | Yes | How Soon Is Now (guitar) |
| Vibrato | LFO pitch (frequency) | None (pitch) | None | Yes | Gilmour leads (guitar) |
| Haas | Short delay, no feedback | 1-35ms | None (0 repeats) | Check comb | Stereo widening (mixing) |
Delay Calculator Tools
Calculate exact delay times in milliseconds for any BPM. Essential for synced production.
Enter BPM, get precise delay times for whole, half, quarter, eighth, dotted, and triplet notes.
Complete reference table of BPM-to-millisecond values. Print it out for your studio.
Practical delay settings for vocals, guitar, synths, and drums. Genre-specific recommendations.
Recommended Learning Order
Start with the most commonly used effects and build from there.
Effects by Genre
Jump to the most useful guides for your production style.
| Genre | Primary Effects | Key Guide |
|---|---|---|
| Hip-Hop / Trap | Slapback on 808, dotted eighth on melody, reverb on vocals | Slapback Delay |
| Pop / EDM | Dotted eighth on leads, chorus on synths, hall reverb on vocals | Dotted Eighth Delay |
| Rock / Alternative | Chorus on clean guitar, flanger on power chords, dotted eighth on leads | Chorus Effect |
| Funk / R&B | Phaser on guitar and Rhodes, chorus on bass (parallel), tremolo on organ | Phaser Effect |
| Jazz / Neo-Soul | Vibrato on Rhodes and piano, phaser on organ, tape delay on guitar | Vibrato Effect |
| Ambient / Film Score | Long ping-pong delay, plate reverb, haas width, tremolo on pads | Ping-Pong Delay |
| Reggae / Ska | BPM-synced tremolo on guitar chops, long tape delay on snare, slapback on keys | Tremolo Effect |
| Lo-Fi / Chill Hop | Tape delay (warble), room reverb, vibrato on keys, chorus on guitar | Tape Delay Guide |
Delay Calculator Alternatives
Comparing BeatKey Delay Calculator with other tools.
BeatKey Production Workflow
Combine delay timing with key detection for a complete production workflow.
Enter the BPM into the delay calculator for exact ms values.
delay.beatkey.appUse the guides above to dial in the right delay type for your track.
Delay Settings GuideFrequently Asked Questions
What are the main types of delay effects?
The main delay types are: slapback delay (50-150ms, 0 feedback, for vocals and guitar), dotted eighth delay (BPM-synced, for melodic leads), ping-pong delay (stereo bouncing repeats), tape delay (analog warmth with degrading repeats), and Haas effect (1-35ms, 0 feedback, for stereo widening). Each serves a distinct production role.
What is the difference between chorus, flanger, and phaser?
All three use LFO modulation, but through different mechanisms. Chorus uses short delay (5-30ms) pitch-modulated to create an ensemble sound. Flanger uses shorter delay (1-10ms) with high feedback to create a jet-sweep comb filter. Phaser uses all-pass filters (no delay at all) to create notches that sweep up and down. Phaser is mono-safe; chorus and flanger can cause phase issues in mono.
What is the difference between tremolo and vibrato?
Tremolo modulates volume (amplitude). Vibrato modulates pitch. Both use an LFO, but they target different aspects of the sound. Famously, Fender reversed the labels on vintage amps, calling tremolo circuits "vibrato" and vice versa. Vibrato is mono-safe. Tremolo can be synced to BPM for rhythmic chopping effects.
How do I calculate the right delay time for my track?
Use the BeatKey Delay Calculator at delay.beatkey.app. Enter your BPM and it calculates exact delay times in milliseconds for every note subdivision (whole, half, quarter, eighth, dotted eighth, triplet, sixteenth). The dotted eighth note (BPM / 60 x 750) is the most common delay time in pop and electronic production.
All 24 Guides
Complete index of all delay and modulation effect guides on delay.beatkey.app.