Midi Clef Karaoke Player Access

parseMIDIData() this.notes = []; this.lyrics = []; this.midiData.tracks.forEach((track, trackIndex) => let currentTime = 0; let currentLyric = ''; track.forEach(event => (event.type === 'noteOn' && event.velocity === 0)) const matchingNote = [...this.notes].reverse().find(n => n.pitch === event.noteNumber && n.duration === 0); if (matchingNote) matchingNote.duration = currentTime - matchingNote.startTime; // Parse lyrics (text events) if (event.type === 'text' && event.text) currentLyric = event.text; this.lyrics.push( text: currentLyric, time: currentTime ); ); ); // Sort notes by start time this.notes.sort((a, b) => a.startTime - b.startTime); this.lyrics.sort((a, b) => a.time - b.time); console.log(`Loaded $this.notes.length notes, $this.lyrics.length lyrics`);

midiToStaffY(midiNote) // Middle C (MIDI 60) position depends on clef const staffTop = 50; const lineSpacing = 25; let linesFromC; if (this.clef === 'treble') // In treble clef, middle C is below the staff (1 ledger line) // E4 (MIDI 64) is bottom line linesFromC = midiNote - 60; // each step = half line const y = staffTop + (4 * lineSpacing) - (linesFromC * lineSpacing / 2); return y; else // Bass clef: middle C is above staff // C3 (MIDI 48) is top line? Let's adjust const bassRef = 48; // C3 linesFromC = midiNote - bassRef; const y = staffTop + (1 * lineSpacing) - (linesFromC * lineSpacing / 2); return y;

.info color: white; text-align: center; margin-top: 15px; font-size: 14px; midi clef karaoke player

.container background: rgba(255,255,255,0.1); backdrop-filter: blur(10px); border-radius: 30px; padding: 25px; box-shadow: 0 20px 40px rgba(0,0,0,0.3); border: 1px solid rgba(255,255,255,0.2);

play() !this.notes.length) return; if (this.audioContext.state === 'suspended') this.audioContext.resume(); if (!this.isPlaying) this.startTime = performance.now() - (this.currentPauseTime * 1000); this.isPlaying = true; this.playMIDINotes(); this.drawStaff(); // Update lyrics in real-time const lyricInterval = setInterval(() => if (!this.isPlaying) clearInterval(lyricInterval); this.updateLyrics(); , 100); parseMIDIData() this

button:hover background: #ff6b6b; transform: translateY(-2px); box-shadow: 0 6px 12px rgba(0,0,0,0.3);

const arrayBuffer = await file.arrayBuffer(); this.midiData = new MIDI.File(arrayBuffer); this.parseMIDIData(); this.detectClef(); this.drawStaff(); document.getElementById('lyricsDisplay').innerHTML = '🎤 Ready to play 🎤'; parseMIDIData() this.notes = []

stop() this.pause(); this.currentPauseTime = 0; this.startTime = 0; this.drawStaff(); document.getElementById('lyricsDisplay').innerHTML = '⏹ Stopped';