MeasuredCaptureInteractiveA circuit model held to its reference.
Our sound models, compared against a circuit simulator.
Sound
The DSP engine.
One small library of sound blocks: gate, EQ, limiter, cabinet and tuner.
LiveWhat it does
The same code runs on a laptop, a Raspberry Pi and a microcontroller.
Who it’s for
Anyone building audio gear, in software or in hardware.
Why we built it
So what you hear in a demo is what the pedal does.
What we’re proud of
The tuner, the effects and the cabinet share one engine.
Try it
The live piece
The engine, on every machine
Text version: squatch-dsp CPU cost per block, by block size
| block | block 16 | block 32 | block 64 | block 128 |
|---|---|---|---|---|
| limiter | 52.45 | 52.72 | 51.9 | 51.39 |
| gate | 4.83 | 4.75 | 4.78 | 4.77 |
| eq (3 bands) | 6.36 | 8.32 | 10.7 | 11.98 |
| gate + eq + limiter | 70.14 | 65.58 | 68.11 | 70.22 |
| tuner | 134.78 | 134.24 | 134.68 | 134.28 |
| cabinet (200 ms IR) | 80.88 | 81.16 | 80.86 | 81.09 |
Text version: One DSP core, four hosts
squatch-dsp: each block is written once and runs everywhere
- Blocks · written once (group) leads to Raspberry Pi
- Blocks · written once (group) leads to Microcontroller ESP32-S3 · Cortex-M7
- Blocks · written once (group) leads to Browser WebAssembly
- Blocks · written once (group) leads to Desktop plugins
- C++17, real-time safe: no allocation, locks, I/O or throws in the audio path leads to Blocks · written once (group)
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.
- FaustA language for describing sound processing, which can be turned into plugins and into code that runs anywhere.
- Raspberry PiA small, cheap computer that is plenty for a home hub, and a good test that our code really is light.
- 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