| 1 | // Web Audio API sound synthesis for dougk |
| 2 | |
| 3 | let audioContext = null |
| 4 | |
| 5 | function getContext() { |
| 6 | if (!audioContext) { |
| 7 | audioContext = new (window.AudioContext || window.webkitAudioContext)() |
| 8 | } |
| 9 | return audioContext |
| 10 | } |
| 11 | |
| 12 | // Damp crunch sound - wet bread being chomped |
| 13 | export function playMonch() { |
| 14 | const ctx = getContext() |
| 15 | const now = ctx.currentTime |
| 16 | |
| 17 | // Resume context if suspended (browser autoplay policy) |
| 18 | if (ctx.state === 'suspended') { |
| 19 | ctx.resume() |
| 20 | } |
| 21 | |
| 22 | // Master output - keep it gentle |
| 23 | const master = ctx.createGain() |
| 24 | master.gain.value = 0.25 |
| 25 | master.connect(ctx.destination) |
| 26 | |
| 27 | // High-pass to remove speaker-popping low frequencies |
| 28 | const highPass = ctx.createBiquadFilter() |
| 29 | highPass.type = 'highpass' |
| 30 | highPass.frequency.value = 150 |
| 31 | highPass.connect(master) |
| 32 | |
| 33 | // Create multiple small crunch "grains" for texture |
| 34 | const grainCount = 5 |
| 35 | for (let i = 0; i < grainCount; i++) { |
| 36 | const delay = i * 0.018 + Math.random() * 0.01 |
| 37 | const grainTime = now + delay |
| 38 | |
| 39 | // Each grain is a short filtered noise burst |
| 40 | const grainLength = 0.04 + Math.random() * 0.03 |
| 41 | const bufferSize = Math.floor(ctx.sampleRate * grainLength) |
| 42 | const noiseBuffer = ctx.createBuffer(1, bufferSize, ctx.sampleRate) |
| 43 | const noiseData = noiseBuffer.getChannelData(0) |
| 44 | |
| 45 | // Softer noise - not full amplitude |
| 46 | for (let j = 0; j < bufferSize; j++) { |
| 47 | noiseData[j] = (Math.random() * 2 - 1) * 0.7 |
| 48 | } |
| 49 | |
| 50 | const grain = ctx.createBufferSource() |
| 51 | grain.buffer = noiseBuffer |
| 52 | |
| 53 | // Bandpass for crunch character - varied per grain |
| 54 | const filter = ctx.createBiquadFilter() |
| 55 | filter.type = 'bandpass' |
| 56 | filter.frequency.value = 300 + Math.random() * 400 |
| 57 | filter.Q.value = 2 + Math.random() * 2 |
| 58 | |
| 59 | // Gentle envelope - no sharp attacks |
| 60 | const env = ctx.createGain() |
| 61 | const peakGain = 0.3 + Math.random() * 0.2 |
| 62 | env.gain.setValueAtTime(0, grainTime) |
| 63 | env.gain.linearRampToValueAtTime(peakGain, grainTime + 0.008) // Soft attack |
| 64 | env.gain.linearRampToValueAtTime(peakGain * 0.6, grainTime + 0.02) |
| 65 | env.gain.linearRampToValueAtTime(0, grainTime + grainLength) // Soft release |
| 66 | |
| 67 | grain.connect(filter) |
| 68 | filter.connect(env) |
| 69 | env.connect(highPass) |
| 70 | |
| 71 | grain.start(grainTime) |
| 72 | grain.stop(grainTime + grainLength) |
| 73 | } |
| 74 | |
| 75 | // Soft muffled "body" of the bite - no harsh transients |
| 76 | const bodyLength = 0.12 |
| 77 | const bodyBuffer = ctx.createBuffer(1, Math.floor(ctx.sampleRate * bodyLength), ctx.sampleRate) |
| 78 | const bodyData = bodyBuffer.getChannelData(0) |
| 79 | for (let i = 0; i < bodyData.length; i++) { |
| 80 | bodyData[i] = (Math.random() * 2 - 1) * 0.5 |
| 81 | } |
| 82 | |
| 83 | const body = ctx.createBufferSource() |
| 84 | body.buffer = bodyBuffer |
| 85 | |
| 86 | // Heavy lowpass for muffled wet sound |
| 87 | const wetFilter = ctx.createBiquadFilter() |
| 88 | wetFilter.type = 'lowpass' |
| 89 | wetFilter.frequency.setValueAtTime(600, now) |
| 90 | wetFilter.frequency.linearRampToValueAtTime(200, now + 0.1) |
| 91 | wetFilter.Q.value = 1 |
| 92 | |
| 93 | const bodyEnv = ctx.createGain() |
| 94 | bodyEnv.gain.setValueAtTime(0, now) |
| 95 | bodyEnv.gain.linearRampToValueAtTime(0.25, now + 0.02) // Gentle attack |
| 96 | bodyEnv.gain.linearRampToValueAtTime(0.15, now + 0.05) |
| 97 | bodyEnv.gain.linearRampToValueAtTime(0, now + bodyLength) |
| 98 | |
| 99 | body.connect(wetFilter) |
| 100 | wetFilter.connect(bodyEnv) |
| 101 | bodyEnv.connect(highPass) |
| 102 | |
| 103 | body.start(now) |
| 104 | body.stop(now + bodyLength) |
| 105 | |
| 106 | // Tonal body - soft pitched "chomp" character |
| 107 | // Primary tone - warm mid frequency |
| 108 | const tone1 = ctx.createOscillator() |
| 109 | tone1.type = 'triangle' |
| 110 | tone1.frequency.setValueAtTime(280, now) |
| 111 | tone1.frequency.linearRampToValueAtTime(180, now + 0.08) |
| 112 | |
| 113 | const tone1Env = ctx.createGain() |
| 114 | tone1Env.gain.setValueAtTime(0, now) |
| 115 | tone1Env.gain.linearRampToValueAtTime(0.12, now + 0.015) // Soft attack |
| 116 | tone1Env.gain.linearRampToValueAtTime(0.06, now + 0.05) |
| 117 | tone1Env.gain.linearRampToValueAtTime(0, now + 0.1) |
| 118 | |
| 119 | tone1.connect(tone1Env) |
| 120 | tone1Env.connect(highPass) |
| 121 | tone1.start(now) |
| 122 | tone1.stop(now + 0.12) |
| 123 | |
| 124 | // Secondary harmonic - adds richness |
| 125 | const tone2 = ctx.createOscillator() |
| 126 | tone2.type = 'sine' |
| 127 | tone2.frequency.setValueAtTime(420, now) |
| 128 | tone2.frequency.linearRampToValueAtTime(300, now + 0.06) |
| 129 | |
| 130 | const tone2Env = ctx.createGain() |
| 131 | tone2Env.gain.setValueAtTime(0, now) |
| 132 | tone2Env.gain.linearRampToValueAtTime(0.06, now + 0.01) |
| 133 | tone2Env.gain.linearRampToValueAtTime(0, now + 0.07) |
| 134 | |
| 135 | tone2.connect(tone2Env) |
| 136 | tone2Env.connect(highPass) |
| 137 | tone2.start(now) |
| 138 | tone2.stop(now + 0.1) |
| 139 | |
| 140 | // Soft low "gulp" undertone - filtered to be safe |
| 141 | const gulp = ctx.createOscillator() |
| 142 | gulp.type = 'sine' |
| 143 | gulp.frequency.setValueAtTime(200, now + 0.02) |
| 144 | gulp.frequency.linearRampToValueAtTime(160, now + 0.1) |
| 145 | |
| 146 | const gulpEnv = ctx.createGain() |
| 147 | gulpEnv.gain.setValueAtTime(0, now) |
| 148 | gulpEnv.gain.linearRampToValueAtTime(0, now + 0.02) // Delayed start |
| 149 | gulpEnv.gain.linearRampToValueAtTime(0.08, now + 0.04) |
| 150 | gulpEnv.gain.linearRampToValueAtTime(0, now + 0.12) |
| 151 | |
| 152 | gulp.connect(gulpEnv) |
| 153 | gulpEnv.connect(highPass) |
| 154 | gulp.start(now) |
| 155 | gulp.stop(now + 0.15) |
| 156 | } |