Dotted Eighth Delay Calculator for BPM Timing

Dotted Eighth Delay Calculator

Convert tempo into dotted eighth delay time, stereo tap spacing, repeats per bar, and feedback tail length.

🎶 Dotted Eighth Presets

Delay Timing Inputs

The core dotted eighth formula is quarter note milliseconds multiplied by 0.75, which is the same as three sixteenth notes or 45000 divided by BPM.

Quarter note tempo from your DAW, pedal tap, or metronome.
Changes the displayed tap relationship while keeping dotted timing.
Use 3 for 3/4, 4 for 4/4, 6 for 6/8, and so on.
Controls bar length and echoes-per-bar math.
Negative is ahead of the grid, positive is behind the grid.
Splits left and right taps around the calculated delay.
Used to estimate the time until echoes fade about 60 dB.
Shows wet-to-dry balance in the breakdown.
Darker repeats usually sit behind the dry part more easily.
Useful for judging whether repeats leave bass and kick space.
Compares the estimated echo tail against the phrase length you are arranging.
Dotted Eighth Delay
375
ms after groove offset
Stereo Tap Pair
360 / 390
left / right milliseconds
Echoes Per Bar
5.33
against this meter
Estimated Echo Tail
2.63
seconds to about -60 dB

📊 Dotted Eighth Spec Grid

0.75x
Quarter Note Multiplier
3/16
Grid Spacing
45000
Formula Numerator
5.33
Echoes in 4/4 Bar

🎼 Note Value Timing Comparison

Delay ValueFormula from Quarter90 BPM120 BPM140 BPM
Straight QuarterQuarter x 1.00666.67 ms500.00 ms428.57 ms
Straight EighthQuarter x 0.50333.33 ms250.00 ms214.29 ms
Dotted EighthQuarter x 0.75500.00 ms375.00 ms321.43 ms
Triplet QuarterQuarter x 0.6667444.44 ms333.33 ms285.71 ms
Dotted QuarterQuarter x 1.501000.00 ms750.00 ms642.86 ms

🎙 Common Dotted Eighth Settings

Use CaseTypical BPMDotted 1/8Feedback RangeFilter Starting Point
Clean guitar pattern80-110563-409 ms32-45%150 Hz to 5 kHz
Lead guitar repeat110-145409-310 ms28-42%180 Hz to 4.8 kHz
Vocal throw85-125529-360 ms18-32%140 Hz to 6.5 kHz
Synth pulse115-135391-333 ms30-48%120 Hz to 7 kHz
Ambient wash60-90750-500 ms45-65%220 Hz to 4.2 kHz

📐 Meter and Bar Relationship

MeterQuarter-Note Beats per BarDotted 1/8 Echoes per BarOne Bar at 120 BPMTiming Note
3/43.004.001.50 secLands evenly each bar
4/44.005.332.00 secCrosses the beat grid
5/45.006.672.50 secCycles over longer phrases
6/83.004.001.50 secMatches two dotted quarters
7/83.504.671.75 secCreates off-grid motion

🎚 Stereo Spread Comparison

Spread SettingTap DifferenceBest ForWatch For
0-3%Very tightMono-safe guitar and vocalsMay feel narrow
4-8%Subtle widthRhythmic guitar partsCheck center focus
9-15%Clear stereo motionPing-pong and synth repeatsCan distract from lead timing
16-30%Wide offsetAmbient layers and transitionsMay blur fast passages
Timing tip: A dotted eighth delay equals three sixteenth notes, so it often sounds syncopated in 4/4 while still staying locked to the tempo grid.
Mix tip: If repeats fight the dry part, lower feedback first, then darken the high cut before moving the delay time away from the calculated value.

Setting a delay pedal by ear is notoriously difficult for a person who is attempting to set it up. The reason for the difficulty is that the delay’s repeats may either fall ahead of or drag behind the beat. If the delay repeats does not line up with the beat of the music, the listener will feel that the song has an unsettled groove.

One way to solve this problem is to use a dotted eighth timing to set the delay echo. A dotted eighth note lasts for three sixteenth notes, and a dotted eighth note lasts for three quarters of a quarter note. The tempo of the song is the most important of the delay settings.

How to Set a Delay Pedal

Each of the other delay settings rely upon the tempo of the song. For example, changing the tempo of a song will immediatly change the millisecond of the delay. Type the tempo of the song into the calculator for the delay pedal, as the calculator determines the delay milliseconds according to the tempo of the song.

Additionally, you can use the groove offset to add a few millisecond to the delay. This offset is useful for allowing the performance to feel wider without sounding late. Stereo spread determine how the delay signal is divided between the left and right channels of the stereo mix.

Using a small percentage of spread is often the best setting for the delay. Using too much spread in the mix can cause the delay repeats to blur in time, which may become distracting from the rest of the song. Feedback amount control how long the tail of the delay sounds.

The musician can calculate feedback amount as the number of delay repeats to drop sixty decibel. This calculation helps to determine whether the delay will still be audible after the next musical phrase. Different musical situations may require different settings on the delay pedal.

For example, clean arpeggios are best with a moderate amount of feedback and a high cut filter to darken the repeats to allow them to sit behind the guitar. Lead guitar lines often require more feedback and a lower low cut filter to allow them to occupy the low end of the music. For vocals, shorter delay tails with gentle filtering allow for the words to remain intelligible.

These settings are not made for the delay calculator, but the calculator will calculate the timing settings to allow for these choices. Another important setting for the delay is time signature. In four-four time, dotted eighth note delays will feel propulsive.

In six-eight time, dotted eighth note delays will sound even because six-eight time favours dotted eighth notes. The calculator will recalculate the echoes per bar if you change the time signature, to ensure that the settings for the delay are appropriate within the new time signature. The way that the delay sounds within the song is also affected by the room acoustics and the mix of the music.

A delay that sounds good in headphones may sound muddy with the mix on stage in a live performance. For example, the drums and bass will occupy low-mid frequencies on stage. To fix this, you can adjust the high-cut filter of the delay or lower the feedback to allow for the delay repeats to sit within the space that is created by the band arrangement.

Additionally, the tone of the delay may need to be adjusted within a DAW if the delay repeats begin to fight with the other instruments in the mix. The delay timing will remain the same, but the tone may need to be adjusted to suit the remaining mix of the song. Another factor that may need to be considered is the length of the delay tail in relation to the length of the musical phrase.

For example, an ambient section may last eight bars, so a long delay tail may be desired. However, the same delay tail may be too long for a verse in the song that changes every two bar. This parameter within the calculator allows the musician to compare the length of the delay tail to the length of the musical phrase.

This comparison allows the musician to decide whether the feedback should of been shortened so that the delay tail does not extend into the next musical section of the song. Many musicians make mistakes when setting up a delay pedal. For example, many musicians will copy the delay settings for one song and place that same setting into another song with which the delay setting is not appropriate.

Another mistake is to use the maximum setting for stereo spread. While this may sound good for the solo guitar player performing guitar lines, this setting for stereo spread may cause the musical part to lose focus when the band is performing together. Musicians can avoid these mistakes by ensuring that the calculated settings for the delay are in accordance with the actual arrangement of the music.

Dotted Eighth Delay Calculator for BPM Timing

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