Audio File Pitch Detector
Upload any audio file to visualize its pitch contour, detect musical notes, and key signature in real-time.
Drag & Drop Audio File
MP3, WAV, M4A, FLAC (Max 50MB)
Processing Audio…
Decoding frequency spectrum (0%)
How to Detect Pitch in Audio Files
1. Secure Local Processing
We use the Web Audio API to process your file directly in your browser. Your audio data never leaves your device, ensuring 100% privacy and security.
2. Visual Pitch Contour
Our algorithm extracts the fundamental frequency (F0) from the audio waveform, creating a visual graph that shows you exactly how the pitch moves over time.
Common Use Cases
🎼 Music Transcription
Slow down complex solos or vocal runs. The visual graph helps you identify rapid note changes that are hard to hear by ear.
🎤 Vocal Analysis
Upload a recording of your singing to check your pitch accuracy. See exactly where you went sharp or flat compared to the target note.
🎹 Sample Key Detection
Producers can upload instrument samples to instantly find their musical key and root note for easier integration into tracks.
🎻 Intonation Check
Violinists and wind players can analyze a full performance to check for consistent tuning and intonation drift.
Frequently Asked Questions
This tool is optimized for monophonic sources (one note at a time). Analyzing full songs with drums and chords may result in noisy data as the algorithm tracks the strongest frequency.
For browser performance, we limit processing to files under 50MB. Larger files may crash the browser tab during decoding.
We support all standard web audio formats including MP3, WAV, OGG, and M4A (AAC).