Instrument Tuner & Pitch Detector
High-precision chromatic instrument tuner with live microphone pitch detection, cents deviation meter, and reference tones.
How to Use Instrument Tuner & Pitch Detector
1. Allow Microphone Access
Click "Start Tuner" to allow your browser to listen to musical pitch via your device microphone.
2. Pluck String or Sing Note
Play a note on your guitar, ukulele, violin, or instrument close to the microphone.
3. Tune to the Center
Watch the pitch gauge identify the closest musical note and cents deviation. Tune until the needle locks onto green.
How This Utility Works
Accurate chromatic and instrument tuner supporting Guitar, Bass, Ukulele, and Violin standard tunings. Detects live pitch via microphone using autocorrelation algorithms, displays sharp/flat cents needle meter, and plays pure 440Hz reference frequencies.
Audio oscillators and microphone frequency spectrum analyzers process data in volatile RAM via Web Audio API. Audio streams are never recorded or saved.
Frequently Asked Questions
Does it work with acoustic instruments?
Yes, grant microphone access and pluck any string. The browser will analyze the acoustic frequency in real time.
Standard Musical & Acoustic Frequencies
| Pitch / Tone | Frequency (Hz) | Audio Octave | Acoustic Characteristic |
|---|---|---|---|
| Sub-Bass Cutoff | 20–60 Hz | Octave 0–1 | Felt as physical vibration rather than pitch |
| Middle C (C4) | 261.63 Hz | Octave 4 | Center reference note on piano keyboard |
| Concert Pitch (A4) | 440.00 Hz | Octave 4 | Universal orchestral tuning standard (ISO 16) |
| Presence / Sibilance | 4,000–8,000 Hz | Octave 7–8 | Vocal clarity and consonant articulation |
| Human Hearing Cap | 16,000–20,000 Hz | High Treble | Upper limit of healthy human auditory perception |