From 6302ec01469aa2196d6a4cfb4e56df5b686d4417 Mon Sep 17 00:00:00 2001
From: Sanan507 <227714367+Sanan507@users.noreply.github.com>
Date: Fri, 11 Sep 2026 15:40:33 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=20Optimize=20useSound=20detune=20loop?=
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Replaced indexOf lookup with a standard index-based loop in playChord
to avoid redundant O(N) array scans during high-frequency audio generation.
---
 frontend/src/hooks/useSound.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/frontend/src/hooks/useSound.ts b/frontend/src/hooks/useSound.ts
index 3cfcec0..dc6bf64 100644
--- a/frontend/src/hooks/useSound.ts
+++ b/frontend/src/hooks/useSound.ts
@@ -153,12 +153,13 @@ function playChord(
   // Exponential decay to simulate vibraphone resonance
   gainNode.gain.exponentialRampToValueAtTime(0.0001, startTime + durationSec);
 
-  for (const note of chord.notes) {
+  for (let i = 0; i < chord.notes.length; i++) {
+    const note = chord.notes[i];
     const osc = ctx.createOscillator();
     osc.type = chord.type;
     osc.frequency.setValueAtTime(midiToHz(note), startTime);
     // Slight detune per note for vibraphone width
-    osc.detune.setValueAtTime((chord.notes.indexOf(note) - 1) * 2, startTime);
+    osc.detune.setValueAtTime((i - 1) * 2, startTime);
     osc.connect(gainNode);
     osc.start(startTime);
     osc.stop(startTime + durationSec + 0.05);