---
license: other
license_name: stability-ai-community
license_link: https://stability.ai/license
base_model: stabilityai/stable-audio-3-small-sfx
tags:
  - audio
  - text-to-audio
  - drum-machine
  - macos
  - desktop-app
---

# Foundry

16-pad drum machine. Each pad renders from a text prompt on a local Stable Audio model. macOS desktop app, weights included.

**Powered by Stability AI.**

## Download

| | |
|---|---|
| File | [Foundry.dmg](https://huggingface.co/petalsfm/foundry/resolve/main/Foundry.dmg?download=true) |
| Size | 3,391,504,096 bytes |
| Platform | macOS, Apple silicon |
| Signature | Developer ID Application, team `6X9YTXU3M9` |
| Notarization | Apple, stapled |
| Network | none after download. no account, no API key |

## Inference

| | |
|---|---|
| Model | `stabilityai/stable-audio-3-small-sfx`, unmodified |
| Text encoder | T5Gemma `t5gemma-b-b-ul2`, as shipped in the checkpoint |
| Precision | fp32 |
| Device | MPS, CPU fallback |
| Steps | 8 |
| CFG scale | 1.0 |
| Length | 2.0 s, clamped 1 to 3 |
| Sample rate | model rate, 44100 default |
| Retries | 3, on a spectral-flatness floor of 0.55 |

## Kit

| | |
|---|---|
| Pads | 16 |
| Prompt field | per pad |
| Morph pad | 4 corner prompts, bilinear blend |
| Per-pad edit | waveform trim, pitch envelope, transient, warp, choke group, loop, latch |
| Tunings | 12-TET · KORA PYTH 7 · JUST 27 · PYTH 31, plus any `.scl` |
| Repitch | detected pitch shifted onto the scale degree |

## MIDI

| | |
|---|---|
| Input | CoreMIDI, via `midir` |
| Notes | 36 to 51, one per pad |
| Channel | omni, filterable to 1 of 16 |
| Velocity | passed through |
| Note-on vel 0 | handled as note-off |

## Export

| | |
|---|---|
| Audio | 24-bit WAV per pad, STORE zip |
| Ableton | `.adg` Drum Rack, DrumCell per pad, mapped to the pad's note |
| Render | `OfflineAudioContext`, same buffer and FX graph as playback |

## Build

| | |
|---|---|
| App | Tauri 2, MIT |
| Front end | Next.js static export, React, TypeScript strict |
| Bundled runtime | CPython 3.12, PyTorch, torchaudio |
| Service | uvicorn sidecar, localhost |

## Licenses

The bundled weights are redistributed unmodified. Both texts ship inside the app at `Foundry.app/Contents/Resources/resources/` beside the weights.

**stable-audio-3-small-sfx**

> This Stability AI Model is licensed under the Stability AI Community License, Copyright © Stability AI Ltd. All Rights Reserved

[LICENSE-Stability-Community.txt](https://huggingface.co/petalsfm/foundry/blob/main/LICENSE-Stability-Community.txt) · [stabilityai/stable-audio-3-small-sfx](https://huggingface.co/stabilityai/stable-audio-3-small-sfx)

**T5Gemma**

> Gemma is provided under and subject to the Gemma Terms of Use found at https://ai.google.dev/gemma/terms

[LICENSE-Gemma.txt](https://huggingface.co/petalsfm/foundry/blob/main/LICENSE-Gemma.txt)

Use of the bundled weights is subject to both agreements, including the Gemma prohibited use policy. Installing Foundry means accepting them. Foundry's own source is MIT and is not covered by either. Full attribution: [NOTICE.txt](https://huggingface.co/petalsfm/foundry/blob/main/NOTICE.txt).

---

[Petals](https://petals.fm)