gleokit.
useful tools for musicians

Tune.
Time.
Tone.
Etc.

a collection of useful tools for musicians. all DSP runs in your browser via the Web Audio API. audio is processed on your machine — nothing is uploaded, because there is no server to upload to.

no installs. no accounts. bookmark and use offline. created as a fun project to consolidate a bunch of useful tools for anyone interested in making music.

01 A4

Guitar Tuner

chromatic tuning through your microphone. pitch detection runs locally on the mic stream — mic audio never leaves the page.

Open — 01
02

Metronome

tempo, simple subdivisions, tap tempo. scheduled on the Web Audio clock — rock-solid at any tempo.

Open — 02
03 =

IR Processor

sample in, impulse response in, convolved WAV out. convolution is rendered offline in your browser; the WAV is written on your machine.

Open — 03
04

Slow-Downer

slow a track down without changing its pitch. loop a section and learn it note by note — decoding and stretching run in your browser.

Open — 04
05

Drum Sequencer

sixteen steps, four pattern pages, four synthesized voices. program a groove and practice against it — no samples, all synthesis.

Open — 05
06

Jam Loops

synthesized backing loops — pick a style, key, and tempo, then play over it. drums and bass stay locked to one clock.

Open — 06
07 A2

Drone

a sustained reference drone for intonation practice. pick a note, equal-tempered or just, and play against it for as long as you like.

Open — 07
08 =?

BPM + Key

drop in a track, get its tempo and key. beat tracking and key profiles are computed locally — honest about confidence, including half-time ambiguity.

Open — 08
09

Pitch Shift

transpose a track up or down in semitones and cents without changing its speed. what you preview is exactly what you download.

Open — 09
10

Radio Sampler

tune across live internet radio and grab the moment you just heard. some stations refuse browser playback — the dial says so honestly and moves on.

Open — 10
11 Hz ms dB

Small Tools

the little utilities every musician eventually needs — tap tempo, capo math, delay times, a click-track maker, and a riff recorder, on one page.

Open — 11
12 — More in the works. the kit keeps growing — new tools land here as they're finished.