Brume is a 24-voice multi-timbral desktop synth for the CM5

Post by oceanwaves » Wed, Jun 03, 2026, 10:11 PM UTC

Fraterkes wrote: post #8

oceanwaves wrote: post #2

I wanted another multi-part hardware synth, so I thought it would be fun to see what I could come up with using the parts I already had, particularly the touchscreen. Loosely inspired by Norns, Brume is a four-part multi-timbral synthesizer that runs on a Raspberry Pi Compute Module 5. It has four synth engines and six voices per part, a shared filter section feeding an effects chain, a sandboxed Lua scripting layer,…

Just out of curiosity, and without judgement, how much ai was involved in building this (ie was it vibed)? I'm trying to get a better idea of the kind of stuff people are making.

Post by ConanRus » Wed, Jun 03, 2026, 10:23 PM UTC

Post by oceanwaves » Wed, Jun 03, 2026, 10:34 PM UTC

embedding-shape wrote: post #14

oceanwaves wrote: post #12

Earlier quoted context omitted.

The copy makes it pretty clear this is firmware for a CM5. Rest assured, if you click the "READ THE MANUAL" button on the landing page you will see screenshots of all synth engines and configuration screens. The repo's README also starts with a screenshot. Thanks.

To be fair, it doesn't seem to be mentioning this until the "Purpose-built on Compute Module 5" section which is more than halfway through the entire landing page, I was similarly lost until I got to that section and actually understood what I was looking at :) Looks really fleshed out and fun though, now I just need to get my hands on a proper carrier board it seems, as the audio out of the box for standard CM5 deve…

Post by embedding-shape » Wed, Jun 03, 2026, 10:41 PM UTC

oceanwaves wrote: post #16

embedding-shape wrote: post #14

Earlier quoted context omitted.

To be fair, it doesn't seem to be mentioning this until the "Purpose-built on Compute Module 5" section which is more than halfway through the entire landing page, I was similarly lost until I got to that section and actually understood what I was looking at :) Looks really fleshed out and fun though, now I just need to get my hands on a proper carrier board it seems, as the audio out of the box for standard CM5 deve…

And yeah, line-out audio on a Pi is a non-starter. This was really designed to be surfaced in a DAW via USB.

Post by rigonkulous » Wed, Jun 03, 2026, 11:05 PM UTC

oceanwaves wrote: post #11

Fraterkes wrote: post #8

Earlier quoted context omitted.

Just out of curiosity, and without judgement, how much ai was involved in building this (ie was it vibed)? I'm trying to get a better idea of the kind of stuff people are making.

A -ton- No hesitation to enthusiastically share that it was actually a parallel goal to see just how deeply I could go while keeping it stable, performant, and extensible for the long term. I ended up building a lot of ancillary agent infrastructure to push the determinism in all the fanned out work slices, too. https://thinkwright.github.io/threadmark/ Also: https://brume.aftertone.co/develop.html#agents