🎵 Note Detector
Real-time musical note identification and frequency analysis
How it works: Sing or play a note into your microphone. The tool instantly identifies the note name, frequency, and octave. See a history of all detected notes and play them back.
🎤 Start Detecting
Click start to begin real-time note detection. The tool will identify every note you sing or play.
Tip: Press Spacebar to start/stop
📚 Note Range
Full range covered: C1 (33 Hz) to C8 (4186 Hz)
Works for:
✓ Human voice (all ranges)
✓ Violin, guitar, flute
✓ Piano, synthesizer
✓ Any sound source
🎵 Current Note
Detected Note
—
Listening...
Octave
—
0¢ from target
🎼 Staff Notation
Musical staff display
Note position will appear on the staff
🎵 Note History
Last 20 Detected Notes
No notes detected yet
🔊 Playback
Play the detected note
Plays the exact note you sang
❓ FAQ
What's the accuracy? ±2 cents (1/50th of a semitone). Professional-grade precision.
Does it work for instruments? Yes! Works for any sound: voice, guitar, violin, flute, piano, etc.
What's a cent? A cent is 1/100th of a semitone. 100 cents = 1 half-step. ±5 cents is imperceptible.
Can I clear the history? Refresh the page to start fresh, or close and reopen the tool.