TUNER

Manual

1. TUNER listens to your microphone and shows the pitch of the note as a needle, offset in cents. Press "Use microphone", grant permission, and play a note — the note name (C through B), octave, and offset in cents from the reference pitch appear in real time.

2. The reference pitch (A4) defaults to 440Hz but can be adjusted between 430 and 450Hz — useful for orchestras or classical performances tuned to a reference other than 440Hz.

3. Audio is analyzed in real time inside your browser only; nothing is recorded, saved, or sent anywhere. Using the tuner requires microphone permission from your browser.

4. Accuracy notes: pitch detection is less accurate in noisy environments or when multiple instruments or voices sound at once. Instruments rich in harmonics (some wind instruments, distorted guitar) can occasionally be read an octave off if an overtone is picked up instead of the fundamental. Holding a single, sustained note in a quiet room gives the most stable reading.

5. FAQ: Q. I granted microphone access but nothing happens. A. Check your browser and OS microphone permission settings, and make sure no other app is currently using the microphone. Q. The reading jitters around. A. Right after plucking a string the pitch takes a moment to settle — read it from the later, sustained part of the note.