Individual skill

sound

Make a game's sound effects and synthesized music on the creator's own computer, free, with no provider or account — a set of effects (jump, coin, hit, explosion, win, lose, UI) rendered from presets, a short synthesized theme or score from chords and patterns with stems and seamless section loops, a mix of any audio files and expressions — measured for loudness, clipping, late starts and what a phone speaker loses, then wired into the game with a small player that starts on the first touch and switches music on bar lines. Use when someone asks for sound effects, SFX, game audio, a chiptune or synth theme, background music without a paid service, music that changes with the game, or says a game is silent.

plugins/homie-rocks/homie/skills/sound/SKILL.md

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Repository last updated
Nov 6, 2026
License
Apache-2.0

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# Sound for a studio's game

Local synthesis runs on this computer with Node 22 and ffmpeg: nothing is sent anywhere and nothing
costs money. Sung songs and produced music from a model are the `music` skill (ElevenLabs, paid);
this skill is effects and synthesized music. They share the studio's `music/` folder and manifest, so
a synthesized theme gets a song page just like a rendered one.

One script: `scripts/sound.mjs` in this skill's folder (Claude Code:
`node "${CLAUDE_PLUGIN_ROOT}/skills/sound/scripts/sound.mjs" <command>`), run from inside the studio
(the folder with `studio.json`). Every command takes `--json`.

```sh
node <sound.mjs> check        # node, ffmpeg and its encoders, the studio and its games
node <sound.mjs> presets      # every effect preset, instrument, groove and pattern, one line each