DelayCalc BPM: Delay & Reverb
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Description
Type one tempo and every time-based value for that song comes out at once.
Delay times, LFO rates, reverb tails, loop lengths in odd meters, the key after a tempo change, and sample counts. No reopening a second calculator.
Dark enough to read in a studio, and every value copies with a tap.
■ Delay & LFO
Enter a BPM and every note value lines up with its delay time in ms and its LFO rate in Hz. Straight, dotted and triplet, plus 5- and 7-tuplets (5:4 / 7:4). Tap a note value for seconds and sample counts at 44.1 / 48 / 96 kHz.
It goes the other way too. Enter the ms or Hz you already have and get the BPM back, with the closest note values listed — so "what tempo is this pedal's 375 ms" takes one entry.
■ Reverb
Pre-Delay and Total Reverb Time from the tempo, with Decay and where the tail lands.
Then Tail Clearance: whether the tail ends before the next hit, and by how much. Clear, overlapping, or exactly on it — as a number rather than a guess.
The basis is stated on screen: Total Reverb Time includes Pre-Delay, quarter-note basis. Plugins define Reverb Time differently, and that is on screen too.
■ Tempo & Key
From a sample's original and target tempo: Tempo Change, Playback Speed, Semitones and Cents.
Then the key it lands on, in Camelot Key and Open Key, with the Harmonic Matches worth mixing into. Preserve Key (Master Tempo / Key Lock) treats the key as unchanged.
Enter the original duration and you also get the new length, its sample count, and how it fits into bars.
■ Loop Length
Bar and loop lengths from a time signature (3/4, 5/4, 5/8, 6/8, 7/8, 9/8 and more) in ms, seconds, Hz and sample count.
Or the other way: give it a length and get the tempo.
■ Library
Keep the setups you use, named, up to 50. Restoring brings back the page and the time signature, so you carry on where you were.
■ Where it earns its place
Setting delay and LFO values in a DAW
Keeping a reverb tail off the next hit
Matching a delay pedal or hardware synth to the tempo by hand
Getting the BPM and note value back from ms or Hz you already have
Loop lengths in odd meters, and sequencer rates
The key a sample lands on after a tempo change
Lining effects up to tempo at a rehearsal or a live set
■ What it does and does not do
Values use the project tempo, quarter-note based, so they match your DAW
Reverb and delay tails are starting points. Set the final value by ear, to suit the source and the gear
No microphone analysis, no DAW integration. You type, it answers
■ Quietly dependable
Saved setups stay on the device. Nothing is sent to a cloud
The core calculation works offline. Only the privacy policy opens a connection
No account
No ads
No subscription. One purchase
iPhone, iPad and Mac on that one purchase
■ Note values
1/1, 1/2, 1/2D, 1/4, 1/4T, 1/4D, 1/8, 1/8T, 1/8D, 1/16, 1/16T, 1/16D, 1/32, 1/32T, 1/32D
Advanced: 1/4 (5:4), 1/8 (5:4), 1/16 (5:4), 1/4 (7:4), 1/8 (7:4), 1/16 (7:4)