How do I install the Catsharp Sonification skill?

Run npx skillmds@latest add plurigrid/catsharp-sonification in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Is Catsharp Sonification free to use?

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Who published Catsharp Sonification?

plurigrid (@plurigrid) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Catsharp Sonification by plurigrid — Agent Skill

Name: Catsharp Sonification
Author: plurigrid

File contents

CatSharp Sonification

Sonify deterministic color streams using the CatSharp scale (Mazzola's Topos of Music).

Galois Chain

seed ⊣ γ ⊣ color ⊣ hue ⊣ pitch ⊣ freq ⊣ tone

Mappings

Hue → Trit (Gay.jl spec)

Hue Range	Trit	Role	Temperature
0-60°, 300-360°	+1	PLUS	warm
60-180°	0	ERGODIC	neutral
180-300°	-1	MINUS	cold

Trit → Waveform

Trit	Waveform	Character
+1	sine	smooth, harmonic
0	triangle	balanced, neutral
-1	square	harsh, digital

Hue → Pitch Class

pitch_class = floor(hue / 30) mod 12

30° per semitone maps the color wheel to the chromatic scale.

CatSharp Pitch → Trit

Pitch Classes	Trit	Structure
{0, 4, 8} (C, E, G#)	+1	Augmented triad
{3, 6, 9} (Eb, F#, A)	0	Diminished subset
Circle of fifths	-1	Fifths stack

Usage

Python (sox required)

import subprocess

def play_color(r, g, b, duration=0.15):
    hue = rgb_to_hue(r, g, b)
    trit = hue_to_trit(hue)
    pc = int(hue / 30) % 12
    freq = 261.63 * (2 ** (pc / 12))  # C4 base
    wave = {1: "sine", 0: "triangle", -1: "square"}[trit]
    subprocess.run(["play", "-q", "-n", "synth", str(duration), 
                    wave, str(freq), "vol", "0.3"])

Babashka

(defn play-trit [trit freq]
  (let [wave (case trit 1 "sine" 0 "triangle" -1 "square")]
    (shell "play" "-q" "-n" "synth" "0.15" wave (str freq) "vol" "0.3")))

Julia (Gay.jl)

using Gay

function sonify_stream(seed, n=12)
    Gay.gay_seed!(seed)
    for _ in 1:n
        c = Gay.next_color()
        hue = Gay.Colors.convert(Gay.HSL, c).h
        pc = mod(round(Int, hue / 30), 12)
        freq = 261.63 * 2^(pc / 12)
        trit = hue < 60 || hue >= 300 ? 1 : hue < 180 ? 0 : -1
        wave = Dict(1 => "sine", 0 => "triangle", -1 => "square")[trit]
        run(`play -q -n synth 0.15 $wave $freq vol 0.3`)
    end
end

GF(3) Conservation

Every tripartite emission sums to 0 mod 3:

MINUS(-1) + ERGODIC(0) + PLUS(+1) = 0

Modelica Formulation

See catsharp.mo for acausal equation-based model.

Dependencies

sox (via flox: flox install sox)
Python 3.x or Julia with Gay.jl
macOS afplay as fallback

Related Skills

gay-mcp: Deterministic color generation
rubato-composer: Mazzola's mathematical music theory
topos-of-music: Full categorical music implementation

---name: catsharp-sonificationdescription: Sonify GF(3) color streams via CatSharp scale. Maps Gay.jl colors to pitch classes and plays through sox. No voice synthesis.---# CatSharp SonificationSonify deterministic color streams using the CatSharp scale (Mazzola's Topos of Music).## Galois Chain```seed ⊣ γ ⊣ color ⊣ hue ⊣ pitch ⊣ freq ⊣ tone```## Mappings### Hue → Trit (Gay.jl spec)| Hue Range | Trit | Role | Temperature ||-----------|------|------|-------------|| 0-60°, 300-360° | +1 | PLUS | warm || 60-180° | 0 | ERGODIC | neutral || 180-300° | -1 | MINUS | cold |### Trit → Waveform| Trit | Waveform | Character ||------|----------|-----------|| +1 | sine | smooth, harmonic || 0 | triangle | balanced, neutral || -1 | square | harsh, digital |### Hue → Pitch Class```pitch_class = floor(hue / 30) mod 12```30° per semitone maps the color wheel to the chromatic scale.### CatSharp Pitch → Trit| Pitch Classes | Trit | Structure ||---------------|------|-----------|| {0, 4, 8} (C, E, G#) | +1 | Augmented triad || {3, 6, 9} (Eb, F#, A) | 0 | Diminished subset || Circle of fifths | -1 | Fifths stack |## Usage### Python (sox required)```pythonimport subprocessdef play_color(r, g, b, duration=0.15): hue = rgb_to_hue(r, g, b) trit = hue_to_trit(hue) pc = int(hue / 30) % 12 freq = 261.63 * (2 ** (pc / 12)) # C4 base wave = {1: "sine", 0: "triangle", -1: "square"}[trit] subprocess.run(["play", "-q", "-n", "synth", str(duration), wave, str(freq), "vol", "0.3"])```### Babashka```clojure(defn play-trit [trit freq] (let [wave (case trit 1 "sine" 0 "triangle" -1 "square")] (shell "play" "-q" "-n" "synth" "0.15" wave (str freq) "vol" "0.3")))```### Julia (Gay.jl)```juliausing Gayfunction sonify_stream(seed, n=12) Gay.gay_seed!(seed) for _ in 1:n c = Gay.next_color() hue = Gay.Colors.convert(Gay.HSL, c).h pc = mod(round(Int, hue / 30), 12) freq = 261.63 * 2^(pc / 12) trit = hue < 60 || hue >= 300 ? 1 : hue < 180 ? 0 : -1 wave = Dict(1 => "sine", 0 => "triangle", -1 => "square")[trit] run(`play -q -n synth 0.15 $wave $freq vol 0.3`) endend```## GF(3) ConservationEvery tripartite emission sums to 0 mod 3:```MINUS(-1) + ERGODIC(0) + PLUS(+1) = 0```## Modelica FormulationSee `catsharp.mo` for acausal equation-based model.## Dependencies- `sox` (via flox: `flox install sox`)- Python 3.x or Julia with Gay.jl- macOS `afplay` as fallback## Related Skills- `gay-mcp`: Deterministic color generation- `rubato-composer`: Mazzola's mathematical music theory- `topos-of-music`: Full categorical music implementation

Frequently asked questions

Catsharp Sonification