MeasuredCaptureInteractiveA circuit model held to its reference.
Our sound models, compared against a circuit simulator.
Sound
The tuner locks in 44 ms.
A guitar tuner for your browser and the pedal.
LiveWhat it does
It locks onto a note in 44 ms, fast enough that you are tuning instead of waiting.
Who it’s for
Guitarists, at the amp or on stage.
Why we built it
The usual methods are slow or jumpy on a real guitar.
What we’re proud of
Three standard methods took 471 to 1,484 ms on the same test.
Try it
The live piece
Tune with it
Text version: how to use the tuner
- Press Start tuner and allow the microphone, then play a string. The tuner shows the note, how many cents sharp or flat it is to a tenth, and a strobe.
- No instrument? Choose a string and whether it is in tune or a few cents off, then press Play a sample note. The tuner reads the note it hears.
- The strobe bands drift right when the note is sharp, left when it is flat, and stand still when it is in tune. If your device asks for less motion they stay still and sit shifted to one side instead.
- The whole tuner works from the keyboard. Everything is a real button, list or slider: Tab moves between them, Space or Enter presses. The reference pitch (A4) can be set from 430 to 450 Hz. A polite status line says the note and how far off it is whenever it changes.
- The sound never leaves your device: the tuner runs in the page.
The tuner, against three standard methods
Text version: Time to lock within a tenth of a cent
| bar 1 | |
|---|---|
| YIN | 1,484 |
| MPM | 471 |
| MPM + phase vocoder | 1,457 |
| Squatch Tuner | 44 |
Text version: Reading error after a note starts
| ms after onset | p90 | median | p10 |
|---|---|---|---|
| 50 | 15 | 5.22 | -0.76 |
| 100 | 7.85 | 2.06 | -2.82 |
| 200 | 5.25 | 0.85 | -3.62 |
| 300 | 4.16 | 0.22 | -3.21 |
| 500 | 2.23 | -0.06 | -2.36 |
| 750 | 1.59 | -0.17 | -1.77 |
Text version: Pitch trackers compared on real guitar DI
| Method | stable within 1 c, p50 (ms) | abs error p95 (cents) |
|---|---|---|
| YIN | 776 | 0.505 |
| MPM | 704 | 0.25 |
| MPM + PV | 1,216 | 0.293 |
| Squatch hz | 864 | 0.176 |
| Squatch steadyHz | 715 | 0.131 |
Technologies used
What it’s built with.
- C++The language of our sound engine and tuner, written once and built for a laptop, a Raspberry Pi and a microcontroller.
- WebAssemblyLets the same C++ that runs on the pedal run in a browser tab, so the demo and the hardware agree.
- Web AudioThe browser's own audio engine. The Squatch Rig plays through it live.
- Canvas 2DThe browser's plain drawing surface. Our tuner's strobe and the rig's controls are drawn on it, so they work almost everywhere.
- MermaidDiagrams and charts described in text. We draw ours in 3D so you can turn them; the live pieces on these pages are built this way.
- WebGLHow a web page draws 3D on the graphics card. Our charts and diagrams use it, each with a text version.
- three.jsThe 3D library our charts and diagrams are drawn with.
Get in touch
Want something like this? Say hello.
A person reads every message.
Email [email protected]
Text us
Text us: +1 888-344-3607. You text first; we reply only in that conversation, about your question. No marketing. Msg & data rates may apply. Reply STOP to opt out, HELP for help. SMS program
Our goods: shop.squatch.ccThe studio: squatch.cc