BPM and Key Finder Usage Example

Usage Steps:

1. Upload Audio - Drag or select MP3, WAV, or other audio files
2. Auto Analysis - Tool automatically detects BPM and key
3. View Results - See BPM, Key, Camelot code, and confidence scores
4. Harmonic Matches - View recommended harmonic key matches
5. Batch Processing - Analyze multiple audio files at once
6. Export Results - Export as JSON or CSV format

Features:

• Accurate BPM Detection - ±1 BPM precision, supports 60-200 BPM range
• Key Recognition - Identifies 24 keys (12 major + 12 minor)
• Camelot Notation - Provides DJ-friendly Camelot Wheel codes
• Harmonic Matching - Recommends harmonically compatible keys
• Confidence Scoring - Shows reliability of detection results
• Batch Processing - Analyze multiple audio files simultaneously
• Multi-Format Support - Supports MP3, WAV, OGG, M4A, and more
• Result Export - Export as JSON or CSV, compatible with DJ software
• Local Processing - All processing in browser, privacy protected
• Possible BPM Values - Shows alternative BPM values with multiplier relationships

Use Cases:

• DJ Mixing - Quickly identify song BPM and Key for seamless transitions
• Music Production - Determine tempo and key of samples and loops
• Music Cataloging - Add BPM and Key tags to music library
• Playlist Creation - Create cohesive playlists based on BPM and key
• Mix Preparation - Find harmonically compatible songs for mixing
• Music Education - Analyze rhythmic and tonal characteristics of music
• Fitness Music - Select workout music with appropriate BPM
• Video Scoring - Choose background music with suitable tempo for videos

Common Questions (Q&A):

1. Q: What is BPM?
   A: BPM (Beats Per Minute) measures the tempo of music, indicating how fast or slow it is. For example, 120 BPM means 120 beats per minute. Higher BPM means faster tempo.
2. Q: What is musical key?
   A: Key is the tonal center of music, including major and minor scales. For example, C major, A minor, etc. Key determines the emotional character and harmonic features of music.
3. Q: What is the Camelot Wheel?
   A: The Camelot Wheel is a notation system commonly used by DJs, representing keys with numbers (1-12) and letters (A/B). Adjacent Camelot codes (±1 number or switch letter) can be mixed harmonically, helping DJs quickly find compatible songs.
4. Q: How to use harmonic matching?
   A: The tool automatically displays harmonically compatible keys with the detected key. For example, if a song is 8A (Am), harmonic matches include 8B (C), 7A (Dm), and 9A (Em). Using these matched keys enables smooth musical transitions.
5. Q: How accurate is the detection?
   A: BPM detection accuracy is typically above 90%, and key detection accuracy is above 85%. The tool displays confidence scores to help you judge result reliability. For complex music or low-quality audio, accuracy may decrease.
6. Q: What audio formats are supported?
   A: Supports mainstream audio formats including MP3, WAV, OGG, M4A, and AAC. File size limit is 50MB.
7. Q: Can I batch process files?
   A: Yes. You can upload multiple audio files at once. The tool will analyze each file sequentially and provides batch export functionality to export all results as JSON or CSV format.
8. Q: Can exported results be imported into DJ software?
   A: Yes. The exported CSV format is compatible with mainstream DJ software like Rekordbox and Serato. You can directly import into these applications.
9. Q: Why are multiple possible BPM values shown?
   A: Some music may have BPM values with multiplier relationships. For example, a 120 BPM song might also be identified as 60 BPM or 240 BPM. The tool displays these possible values for you to choose based on context.
10. Q: Are files uploaded to a server?
    A: No. All audio analysis is performed entirely in your browser. Files are not uploaded to any server, completely protecting your privacy.