ass

management/src/utils/notifySound.ts

@@ -0,0 +1,37 @@
+let audioCtx: AudioContext | null = null;
+
+function getAudioCtx(): AudioContext | null {
+  if (audioCtx) return audioCtx;
+  try {
+    const Ctx = window.AudioContext || (window as unknown as { webkitAudioContext: typeof AudioContext }).webkitAudioContext;
+    audioCtx = new Ctx();
+    return audioCtx;
+  } catch {
+    return null;
+  }
+}
+
+/** Short two-tone ping for chat notifications */
+export function playChatSound() {
+  const ctx = getAudioCtx();
+  if (!ctx) return;
+  if (ctx.state === 'suspended') {
+    void ctx.resume();
+  }
+  const playTone = (freq: number, start: number, duration: number) => {
+    const osc = ctx.createOscillator();
+    const gain = ctx.createGain();
+    osc.type = 'sine';
+    osc.frequency.value = freq;
+    gain.gain.setValueAtTime(0.0001, start);
+    gain.gain.exponentialRampToValueAtTime(0.12, start + 0.02);
+    gain.gain.exponentialRampToValueAtTime(0.0001, start + duration);
+    osc.connect(gain);
+    gain.connect(ctx.destination);
+    osc.start(start);
+    osc.stop(start + duration + 0.02);
+  };
+  const t = ctx.currentTime;
+  playTone(880, t, 0.12);
+  playTone(1174, t + 0.14, 0.14);
+}