LIBROSA_SETUP.md

🎵 Librosa Audio Analysis Setup

Quick Start

1. Start the Librosa Backend

cd backend
pip install -r requirements.txt
python main.py

The backend will start at http://localhost:8000

2. Your React App is Already Updated!

The frontend now calls the Librosa backend automatically when you click "Analyze with Librosa"

What's New

✅ Professional Audio Analysis: Uses Librosa (industry-standard audio library)
✅ Accurate BPM Detection: Beat tracking algorithms
✅ Musical Key Detection: Chroma feature analysis
✅ No More Hanging: Backend processing won't freeze your page
✅ High Confidence: Professional-grade accuracy

How It Works

1. Upload Beat: User uploads audio file
2. Click Analyze: "Analyze with Librosa" button
3. Backend Processing: Librosa analyzes the audio (10-30 seconds)
4. Results: BPM and Key automatically filled in
5. Visual Feedback: Progress bar and success notifications

Expected Analysis Time

• Small files (< 5MB): 10-15 seconds
• Medium files (5-20MB): 15-25 seconds
• Large files (20-50MB): 25-30 seconds

Troubleshooting

• Backend not starting: Check if port 8000 is free
• Analysis fails: Ensure audio file is under 50MB
• Slow analysis: This is normal for Librosa - it's doing professional analysis!

Test the API

curl -X POST -F "file=@your-beat.mp3" http://localhost:8000/analyze-audio

Next Steps

1. Start the backend: cd backend && python main.py
2. Test with your React app
3. Enjoy professional audio analysis! 🎯