Music Production Calc

Camelot wheel code for a musical key and its harmonic-mixing matches; optionally test if two keys mix.

Feedback delay decay: dB lost per repeat, repeats to fall 60 dB and total tail time in ms from delay and feedback.

The 7 triads and 7th chords of a key (major, natural or harmonic minor) with spelled notes and Roman numerals.

Note name, MIDI number and Hz at a fret on guitar, bass, ukulele or violin strings, with alternate tunings.

Shift a key by semitones with the right sharp or flat spelling, its relative major or minor, signature and capo shapes.

Convert semitones, cents, speed percent, two frequencies or two BPMs into one varispeed ratio with all equivalents.

Song length in seconds and m:ss from bars, BPM and time signature, plus bars or BPM needed for a target length.

Tap tempo from tap timestamps in ms: mean and median BPM, interval spread and jitter percent.

Note values 1/1 to 1/32 (straight, dotted, triplet) at a BPM as ms, LFO Hz, samples and MIDI ticks.