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https://github.com/Kpa-clawbot/meshcore-analyzer.git
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Add mesh audio sonification — raw packet bytes become music
Per AUDIO-PLAN.md: - payload_type selects instrument (bell/marimba/piano/ethereal), scale (major penta/minor penta/natural minor/whole tone), and root key - sqrt(payload_length) bytes sampled evenly across payload for melody - byte value → pitch (quantized to scale) + note duration (50-400ms) - byte-to-byte delta → note spacing (30-300ms) - hop_count → low-pass filter cutoff (bright nearby, muffled far) - observation_count → volume + chord voicing (detuned stacked voices) - origin longitude → stereo pan - BPM tempo slider scales all timings - Volume slider for master gain - ADSR envelopes per instrument type - Max 12 simultaneous voices with voice stealing - Pure Web Audio API, no dependencies
This commit is contained in:
you
293
public/audio.js
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293
public/audio.js
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@@ -0,0 +1,293 @@
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// Mesh Audio Sonification — public/audio.js
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// Turns raw packet bytes into generative music per AUDIO-PLAN.md
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(function () {
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'use strict';
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// === State ===
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let audioEnabled = false;
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let audioCtx = null;
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let masterGain = null;
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let bpm = 120; // default BPM
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let activeVoices = 0;
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const MAX_VOICES = 12;
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// === Scales (MIDI note offsets from root) ===
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// Pentatonic / modal scales across 2-3 octaves
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const SCALES = {
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// C major pentatonic: C D E G A (repeated across octaves)
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ADVERT: buildScale([0, 2, 4, 7, 9], 48), // root C3
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// A minor pentatonic: A C D E G
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GRP_TXT: buildScale([0, 3, 5, 7, 10], 45), // root A2
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// E natural minor: E F# G A B C D
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TXT_MSG: buildScale([0, 2, 3, 5, 7, 8, 10], 40), // root E2
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// D whole tone: D E F# G# A# C
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TRACE: buildScale([0, 2, 4, 6, 8, 10], 50), // root D3
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};
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// Fallback scale for unknown types
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const DEFAULT_SCALE = SCALES.ADVERT;
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// === Synth configs per type ===
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const SYNTH_CONFIGS = {
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ADVERT: { type: 'triangle', attack: 0.02, decay: 0.3, sustain: 0.4, release: 0.5 }, // bell/pad
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GRP_TXT: { type: 'sine', attack: 0.005, decay: 0.15, sustain: 0.1, release: 0.2 }, // marimba/pluck
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TXT_MSG: { type: 'triangle', attack: 0.01, decay: 0.2, sustain: 0.3, release: 0.4 }, // piano-like
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TRACE: { type: 'sine', attack: 0.05, decay: 0.4, sustain: 0.5, release: 0.8 }, // ethereal
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};
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const DEFAULT_SYNTH = SYNTH_CONFIGS.ADVERT;
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// === Helpers ===
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function buildScale(intervals, rootMidi) {
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// Build scale across 3 octaves
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const notes = [];
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for (let oct = 0; oct < 3; oct++) {
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for (const interval of intervals) {
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notes.push(rootMidi + oct * 12 + interval);
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}
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}
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return notes;
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}
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function midiToFreq(midi) {
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return 440 * Math.pow(2, (midi - 69) / 12);
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}
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function mapRange(value, inMin, inMax, outMin, outMax) {
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return outMin + ((value - inMin) / (inMax - inMin)) * (outMax - outMin);
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}
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function quantizeToScale(byteVal, scale) {
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// Map 0-255 to scale index
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const idx = Math.floor((byteVal / 256) * scale.length);
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return scale[Math.min(idx, scale.length - 1)];
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}
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function tempoMultiplier() {
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// 120 BPM = 1.0x, higher = faster (shorter durations)
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return 120 / bpm;
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}
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// === Core: Initialize audio context ===
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function initAudio() {
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if (audioCtx) return;
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audioCtx = new (window.AudioContext || window.webkitAudioContext)();
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masterGain = audioCtx.createGain();
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masterGain.gain.value = 0.3;
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masterGain.connect(audioCtx.destination);
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}
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// === Core: Sonify a single packet ===
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function sonifyPacket(pkt) {
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if (!audioEnabled || !audioCtx) return;
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if (activeVoices >= MAX_VOICES) return; // voice stealing: just drop
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const rawHex = pkt.raw || pkt.raw_hex || (pkt.packet && pkt.packet.raw_hex) || '';
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if (!rawHex || rawHex.length < 6) return; // need at least 3 bytes
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// Parse raw hex to byte array
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const allBytes = [];
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for (let i = 0; i < rawHex.length; i += 2) {
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const b = parseInt(rawHex.slice(i, i + 2), 16);
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if (!isNaN(b)) allBytes.push(b);
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}
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if (allBytes.length < 3) return;
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// Header = first 3 bytes (configure voice), payload = rest
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const payloadBytes = allBytes.slice(3);
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if (payloadBytes.length === 0) return;
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// Extract musical parameters from pkt
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const decoded = pkt.decoded || {};
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const header = decoded.header || {};
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const typeName = header.payloadTypeName || 'UNKNOWN';
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const hops = decoded.path?.hops || [];
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const hopCount = Math.max(1, hops.length);
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const obsCount = pkt.observation_count || (pkt.packet && pkt.packet.observation_count) || 1;
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// Select scale and synth config
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const scale = SCALES[typeName] || DEFAULT_SCALE;
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const synthConfig = SYNTH_CONFIGS[typeName] || DEFAULT_SYNTH;
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// Sample sqrt(payload_length) bytes evenly across payload
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const noteCount = Math.max(2, Math.min(10, Math.ceil(Math.sqrt(payloadBytes.length))));
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const sampledBytes = [];
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for (let i = 0; i < noteCount; i++) {
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const idx = Math.floor((i / noteCount) * payloadBytes.length);
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sampledBytes.push(payloadBytes[idx]);
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}
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// Compute pan from origin longitude if available
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const payload = decoded.payload || {};
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let panValue = 0; // center default
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if (payload.lat !== undefined && payload.lon !== undefined) {
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// Map typical mesh longitude range (-125 to -65 for US) to -1..1
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panValue = mapRange(payload.lon, -125, -65, -1, 1);
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panValue = Math.max(-1, Math.min(1, panValue));
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} else if (hops.length > 0) {
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// Try first hop's position if available (node markers have lat/lon)
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// Fall back to slight random pan for spatial interest
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panValue = (Math.random() - 0.5) * 0.6;
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}
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// Filter cutoff from hop count: few hops = bright (8000Hz), many = muffled (800Hz)
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const filterFreq = mapRange(Math.min(hopCount, 10), 1, 10, 8000, 800);
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// Volume from observation count: 1 obs = base, more = louder (capped)
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const baseVolume = 0.15;
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const volume = Math.min(0.5, baseVolume + (obsCount - 1) * 0.03);
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// Detune cents for chord voicing (observation > 1)
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const voiceCount = Math.min(obsCount, 4); // max 4 stacked voices
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// Schedule the note sequence
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const tm = tempoMultiplier();
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let timeOffset = audioCtx.currentTime + 0.01; // tiny offset to avoid clicks
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activeVoices++;
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// Create shared filter
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const filter = audioCtx.createBiquadFilter();
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filter.type = 'lowpass';
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filter.frequency.value = filterFreq;
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filter.Q.value = 1;
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// Create panner
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const panner = audioCtx.createStereoPanner();
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panner.pan.value = panValue;
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// Chain: voices → filter → panner → master
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filter.connect(panner);
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panner.connect(masterGain);
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let lastNoteEnd = timeOffset;
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for (let i = 0; i < sampledBytes.length; i++) {
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const byte = sampledBytes[i];
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const midiNote = quantizeToScale(byte, scale);
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const freq = midiToFreq(midiNote);
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// Duration from byte value: low = staccato (50ms), high = sustained (400ms)
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const duration = mapRange(byte, 0, 255, 0.05, 0.4) * tm;
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// Spacing from delta to next byte
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let gap = 0.05 * tm; // minimum gap
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if (i < sampledBytes.length - 1) {
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const delta = Math.abs(sampledBytes[i + 1] - byte);
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gap = mapRange(delta, 0, 255, 0.03, 0.3) * tm;
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}
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const noteStart = timeOffset;
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const noteEnd = noteStart + duration;
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// Play note (with optional chord voicing)
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for (let v = 0; v < voiceCount; v++) {
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const detune = v === 0 ? 0 : (v % 2 === 0 ? 1 : -1) * (v * 7); // ±7, ±14 cents
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const osc = audioCtx.createOscillator();
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const envGain = audioCtx.createGain();
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osc.type = synthConfig.type;
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osc.frequency.value = freq;
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osc.detune.value = detune;
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// ADSR envelope
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const a = synthConfig.attack;
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const d = synthConfig.decay;
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const s = synthConfig.sustain;
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const r = synthConfig.release;
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const voiceVol = volume / voiceCount; // split volume across voices
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envGain.gain.setValueAtTime(0, noteStart);
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envGain.gain.linearRampToValueAtTime(voiceVol, noteStart + a);
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envGain.gain.linearRampToValueAtTime(voiceVol * s, noteStart + a + d);
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envGain.gain.setValueAtTime(voiceVol * s, noteEnd);
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envGain.gain.linearRampToValueAtTime(0.001, noteEnd + r);
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osc.connect(envGain);
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envGain.connect(filter);
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osc.start(noteStart);
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osc.stop(noteEnd + r + 0.01);
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// Cleanup
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osc.onended = () => {
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osc.disconnect();
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envGain.disconnect();
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};
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}
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timeOffset = noteEnd + gap;
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lastNoteEnd = noteEnd + (synthConfig.release || 0.2);
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}
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// Release voice slot after all notes finish
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const totalDuration = (lastNoteEnd - audioCtx.currentTime + 0.5) * 1000;
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setTimeout(() => {
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activeVoices = Math.max(0, activeVoices - 1);
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try {
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filter.disconnect();
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panner.disconnect();
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} catch (e) {}
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}, totalDuration);
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}
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// === Public API ===
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function setEnabled(on) {
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audioEnabled = on;
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if (on) initAudio();
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localStorage.setItem('live-audio-enabled', on);
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}
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function isEnabled() {
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return audioEnabled;
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}
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function setBPM(val) {
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bpm = Math.max(40, Math.min(300, val));
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localStorage.setItem('live-audio-bpm', bpm);
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}
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function getBPM() {
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return bpm;
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}
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function setVolume(val) {
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if (masterGain) masterGain.gain.value = Math.max(0, Math.min(1, val));
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localStorage.setItem('live-audio-volume', val);
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}
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function getVolume() {
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return masterGain ? masterGain.gain.value : 0.3;
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}
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// Restore from localStorage
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function restore() {
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const saved = localStorage.getItem('live-audio-enabled');
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if (saved === 'true') audioEnabled = true;
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const savedBpm = localStorage.getItem('live-audio-bpm');
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if (savedBpm) bpm = parseInt(savedBpm, 10) || 120;
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const savedVol = localStorage.getItem('live-audio-volume');
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if (savedVol) {
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initAudio();
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if (masterGain) masterGain.gain.value = parseFloat(savedVol) || 0.3;
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}
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}
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// Export
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window.MeshAudio = {
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sonifyPacket,
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setEnabled,
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isEnabled,
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setBPM,
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getBPM,
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setVolume,
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getVolume,
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restore,
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};
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})();
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@@ -22,7 +22,7 @@
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<meta name="twitter:title" content="MeshCore Analyzer">
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<meta name="twitter:description" content="Real-time MeshCore LoRa mesh network analyzer — live packet visualization, node tracking, channel decryption, and route analysis.">
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<meta name="twitter:image" content="https://raw.githubusercontent.com/Kpa-clawbot/meshcore-analyzer/master/public/og-image.png">
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<link rel="stylesheet" href="style.css?v=1774168787">
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<link rel="stylesheet" href="style.css?v=1774171176">
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<link rel="stylesheet" href="home.css">
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<link rel="stylesheet" href="live.css?v=1774058575">
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<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
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@@ -90,7 +90,8 @@
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<script src="nodes.js?v=1774126708" onerror="console.error('Failed to load:', this.src)"></script>
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<script src="traces.js?v=1774135052" onerror="console.error('Failed to load:', this.src)"></script>
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<script src="analytics.js?v=1774126708" onerror="console.error('Failed to load:', this.src)"></script>
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<script src="live.js?v=1774167561" onerror="console.error('Failed to load:', this.src)"></script>
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<script src="audio.js?v=1774171176" onerror="console.error('Failed to load:', this.src)"></script>
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<script src="live.js?v=1774171176" onerror="console.error('Failed to load:', this.src)"></script>
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<script src="observers.js?v=1774290000" onerror="console.error('Failed to load:', this.src)"></script>
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<script src="observer-detail.js?v=1774028201" onerror="console.error('Failed to load:', this.src)"></script>
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<script src="node-analytics.js?v=1774126708" onerror="console.error('Failed to load:', this.src)"></script>
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@@ -639,9 +639,15 @@
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<span id="matrixDesc" class="sr-only">Animate packet hex bytes flowing along paths like the Matrix</span>
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<label><input type="checkbox" id="liveMatrixRainToggle" aria-describedby="rainDesc"> Rain</label>
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<span id="rainDesc" class="sr-only">Matrix rain overlay — packets fall as hex columns</span>
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<label><input type="checkbox" id="liveAudioToggle" aria-describedby="audioDesc"> 🎵 Audio</label>
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<span id="audioDesc" class="sr-only">Sonify packets — turn raw bytes into generative music</span>
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<label><input type="checkbox" id="liveFavoritesToggle" aria-describedby="favDesc"> ⭐ Favorites</label>
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<span id="favDesc" class="sr-only">Show only favorited and claimed nodes</span>
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</div>
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<div class="audio-controls hidden" id="audioControls">
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<label class="audio-slider-label">BPM <input type="range" id="audioBpmSlider" min="40" max="300" value="120" class="audio-slider"><span id="audioBpmVal">120</span></label>
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<label class="audio-slider-label">Vol <input type="range" id="audioVolSlider" min="0" max="100" value="30" class="audio-slider"><span id="audioVolVal">30</span></label>
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</div>
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</div>
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<div class="live-overlay live-feed" id="liveFeed">
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<button class="feed-hide-btn" id="feedHideBtn" title="Hide feed">✕</button>
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@@ -825,6 +831,41 @@
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});
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if (matrixRain) startMatrixRain();
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// Audio toggle
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const audioToggle = document.getElementById('liveAudioToggle');
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const audioControls = document.getElementById('audioControls');
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const bpmSlider = document.getElementById('audioBpmSlider');
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const bpmVal = document.getElementById('audioBpmVal');
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const volSlider = document.getElementById('audioVolSlider');
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const volVal = document.getElementById('audioVolVal');
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if (window.MeshAudio) {
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MeshAudio.restore();
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audioToggle.checked = MeshAudio.isEnabled();
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if (MeshAudio.isEnabled()) audioControls.classList.remove('hidden');
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bpmSlider.value = MeshAudio.getBPM();
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bpmVal.textContent = MeshAudio.getBPM();
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volSlider.value = Math.round(MeshAudio.getVolume() * 100);
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volVal.textContent = Math.round(MeshAudio.getVolume() * 100);
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}
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audioToggle.addEventListener('change', (e) => {
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if (window.MeshAudio) {
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MeshAudio.setEnabled(e.target.checked);
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audioControls.classList.toggle('hidden', !e.target.checked);
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}
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});
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bpmSlider.addEventListener('input', (e) => {
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const v = parseInt(e.target.value, 10);
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bpmVal.textContent = v;
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if (window.MeshAudio) MeshAudio.setBPM(v);
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});
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volSlider.addEventListener('input', (e) => {
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const v = parseInt(e.target.value, 10);
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volVal.textContent = v;
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if (window.MeshAudio) MeshAudio.setVolume(v / 100);
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});
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// Feed show/hide
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const feedEl = document.getElementById('liveFeed');
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// Keyboard support for feed items (event delegation)
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@@ -1394,6 +1435,7 @@
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const color = TYPE_COLORS[typeName] || '#6b7280';
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playSound(typeName);
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if (window.MeshAudio) MeshAudio.sonifyPacket(pkt);
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addFeedItem(icon, typeName, payload, hops, color, pkt);
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addRainDrop(pkt);
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// Spawn extra rain columns for multiple observations with varied hop counts
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@@ -1592,3 +1592,35 @@ tr[data-hops]:hover { background: rgba(59,130,246,0.1); }
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/* Node labels on map */
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.matrix-theme .node-label { color: #00ff41 !important; text-shadow: 0 0 4px #00ff41 !important; }
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.matrix-theme .leaflet-marker-icon:not(.matrix-char) { filter: hue-rotate(90deg) saturate(1) brightness(0.35) opacity(0.5); }
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/* Audio controls */
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.audio-controls {
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display: flex;
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gap: 12px;
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align-items: center;
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padding: 4px 8px;
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font-size: 12px;
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}
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.audio-controls.hidden { display: none; }
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.audio-slider-label {
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display: flex;
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align-items: center;
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gap: 4px;
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color: var(--text-secondary, #6b7280);
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font-size: 11px;
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white-space: nowrap;
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}
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.audio-slider {
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width: 80px;
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height: 4px;
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cursor: pointer;
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accent-color: #8b5cf6;
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}
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.audio-slider-label span {
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min-width: 24px;
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text-align: right;
|
||||
font-variant-numeric: tabular-nums;
|
||||
}
|
||||
.matrix-theme .audio-controls label,
|
||||
.matrix-theme .audio-controls span { color: #00ff41 !important; }
|
||||
.matrix-theme .audio-slider { accent-color: #00ff41; }
|
||||
|
||||
Reference in New Issue
Block a user