106 lines
2.7 KiB
JavaScript
106 lines
2.7 KiB
JavaScript
/* ==========================================================================
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ELEGANT AUDIO SYNTHESIZER (WEB AUDIO API)
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========================================================================== */
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class SoundEffects {
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constructor() {
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this.ctx = null;
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this.enabled = true;
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}
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init() {
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if (!this.ctx) {
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const AudioCtx = window.AudioContext || window.webkitAudioContext;
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if (AudioCtx) {
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this.ctx = new AudioCtx();
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}
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}
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if (this.ctx && this.ctx.state === 'suspended') {
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this.ctx.resume();
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}
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}
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playTick() {
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if (!this.enabled) return;
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this.init();
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if (!this.ctx) return;
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try {
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const osc = this.ctx.createOscillator();
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const gain = this.ctx.createGain();
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osc.type = 'sine';
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// Low subtle tick
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osc.frequency.setValueAtTime(600, this.ctx.currentTime);
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osc.frequency.exponentialRampToValueAtTime(1200, this.ctx.currentTime + 0.03);
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gain.gain.setValueAtTime(0.04, this.ctx.currentTime);
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gain.gain.exponentialRampToValueAtTime(0.001, this.ctx.currentTime + 0.03);
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osc.connect(gain);
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gain.connect(this.ctx.destination);
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osc.start();
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osc.stop(this.ctx.currentTime + 0.035);
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} catch (e) {
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// Audio context edge cases
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}
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}
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playReveal() {
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if (!this.enabled) return;
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this.init();
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if (!this.ctx) return;
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try {
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const now = this.ctx.currentTime;
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const osc = this.ctx.createOscillator();
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const gain = this.ctx.createGain();
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osc.type = 'triangle';
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osc.frequency.setValueAtTime(440, now);
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osc.frequency.exponentialRampToValueAtTime(880, now + 0.12);
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gain.gain.setValueAtTime(0.08, now);
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gain.gain.exponentialRampToValueAtTime(0.001, now + 0.12);
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osc.connect(gain);
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gain.connect(this.ctx.destination);
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osc.start(now);
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osc.stop(now + 0.13);
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} catch (e) {}
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}
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playFanfare() {
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if (!this.enabled) return;
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this.init();
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if (!this.ctx) return;
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try {
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const now = this.ctx.currentTime;
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// Elegant Glass Chimes chord: C5, E5, G5, C6
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const freqs = [523.25, 659.25, 783.99, 1046.50];
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freqs.forEach((f, idx) => {
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const osc = this.ctx.createOscillator();
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const gain = this.ctx.createGain();
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osc.type = 'sine';
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osc.frequency.setValueAtTime(f, now + idx * 0.04);
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gain.gain.setValueAtTime(0.06, now + idx * 0.04);
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gain.gain.exponentialRampToValueAtTime(0.001, now + idx * 0.04 + 0.5);
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osc.connect(gain);
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gain.connect(this.ctx.destination);
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osc.start(now + idx * 0.04);
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osc.stop(now + idx * 0.04 + 0.55);
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});
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} catch (e) {}
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}
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}
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window.soundEffects = new SoundEffects();
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