chore: add wiki log

2026-07-27 11:43:43 +07:00
parent f7a46e0baa
commit 9357e4fcc8
1 changed files with 7 additions and 0 deletions
@@ -414,3 +414,10 @@
 - **Nguyên nhân:** SoundFonts như saxophone có release envelope dài, noteOff không tắt âm ngay
 - **Fix:** Gửi `controllerChange(ch, 123, 0)` = All Notes Off trước mỗi NoteOn từ MIDI keyboard
 - **Kết quả:** Note trước tắt ngay khi play note mới, không còn đè âm
+
+### [2026-07-27 11:45] Fix: lazyInit in playNote + 3 root cause fixes
+- **Root cause 1:** NoteOn with velocity=0 treated as NoteOff ✅ (cmd === 0x8 || (cmd === 0x9 && vel === 0))
+- **Root cause 2:** Same channel extraction for NoteOn+NoteOff ✅ (msg.data[0] & 0x0F)
+- **Root cause 3:** pitch/channel always integers from msg.data[] ✅
+- **Added:** _lazyInit() called from playNote when _initialized false
+- **Oscillator fallback:** 2000ms instead of 60000ms (quick preview before init)