🎤

Pitch Correction Preview — Real-Time Auto-Tune Visualizer

Use this free pitch correction preview to sing into your microphone and watch, in real time, the note you’re on, the nearest note in your chosen key & scale, and exactly where auto-tune would snap it — with an adjustable correction strength from subtle to hard.

ℹ This is a visualizer: it detects your pitch and shows where correction would move it. It does not alter, auto-tune, or play back your voice — true real-time audio auto-tune needs a low-latency phase-vocoder plug-in. Your microphone is analyzed live on your device and never recorded or uploaded. Use headphones-free; nothing is routed back to your speakers.

Key

Scale

Microphone

Correction strength

0% = no correction (just shows your pitch) · 100% = hard auto-tune snap

Mic sensitivity

Lower = picks up quieter sounds (and more noise)

Microphone is off. Click “Start microphone”, then allow access when prompted.

How It Works

This pitch correction preview and auto-tune visualizer reads your microphone live and runs a YIN pitch-detection algorithm to find the fundamental frequency you’re singing. YIN (by de Cheveigné & Kawahara) uses cumulative mean normalized difference to avoid the octave errors that plague standard autocorrelation, giving reliable fundamental frequency tracking even on breathy voices. It converts that frequency to a musical note via the standard semitone formula (semitones = 12 × log ‍ ₂(f / A4)), then finds the nearest diatonic or pentatonic note in the key and scale you picked (for example, in C major it will ignore all five chromatic black keys, keeping you in the diatonic set C D E F G A B). The correction strength slider shows how far auto-tune would pull your pitch toward that scale note — 0% leaves it alone, 100% snaps it exactly onto the target. The ribbon visualizes your actual pitch, the target scale degree, and the corrected position between them. If you want to check your microphone quality before starting, use the microphone test first.

Everything happens on your device; nothing is recorded or uploaded. Importantly, this visualizes correction — it does not produce auto-tuned audio. Real-time audio auto-tune requires a low-latency phase-vocoder running in an audio plug-in or DAW such as Antares Auto-Tune, Celemony Melodyne, or a compatible VST/AU plugin. Use this as a vocal pitch monitor to train your ear and improve vocal intonation against a chosen scale, build singing pitch accuracy note by note, or understand how pitch quantization works — whether that’s subtle tuning assistance or hard chromatic correction. For a deeper look at your voice’s harmonic content, the audio spectrum analyzer shows the full frequency spectrum while you sing.

Frequently Asked Questions

Does this auto-tune my voice?

No. It shows you, in real time, where pitch correction would move your note for the chosen key and scale, but it doesn’t alter or play back corrected audio. For actual auto-tuned output, use a DAW plug-in.

Is my microphone recorded or uploaded?

No. Audio is analyzed live in your browser and never leaves your device. Stopping the mic releases it immediately, and it’s released automatically when you leave the page.

What do the key and scale do?

They define which notes are “in tune”. The tool snaps to the nearest note in that set — e.g. C major allows C D E F G A B, while C minor pentatonic allows C E♭ F G B♭. Choose Chromatic to allow every note.

Why doesn’t it detect my pitch?

Sing a steady, sustained note close to the mic, and lower the sensitivity value if it’s not picking you up. Very breathy or noisy input is hard to track. Pitch detection works best on clear single notes, not chords.

Should I use headphones?

It makes no difference — nothing is played back. The tool only listens and draws; it never routes your mic to the speakers, so there’s no feedback risk.

Which scale should I choose for pop, jazz, or blues singing?

For pop and country, Major or Major Pentatonic (5-note subset, no half-steps) works well — pentatonic is especially forgiving because it removes the two most dissonant chromatic intervals. For blues and R&B, try Minor Pentatonic (C E♭ F G B♭) to allow the characteristic blue notes. For classical training in a minor key, choose Natural Minor. Jazz often uses modes or altered scales not included here; select Chromatic to see your raw pitch without any scale constraint.

Can this help me practice singing in tune without a DAW?

Yes — this is precisely the use case it was built for. Pick your key and scale, set correction strength to 0%, and use the display as a real-time vocal intonation monitor: watch the “Nearest scale note” and the cents deviation to see how close your pitch accuracy is. Gradually increase correction strength to visualize how far off each note is. This gives you the same pitch-quantization feedback you’d get from a DAW, with no software to install. For a clean reference tone to match against, pair this with the online tone generator.

Why does the pitch jump around or show the wrong octave?

Octave errors (e.g., detecting C3 instead of C4) are the most common YIN failure mode and usually happen when the signal is too quiet, too breathy, or contains strong even harmonics. To fix: sing closer to the mic, lower the Mic sensitivity slider so quieter input is accepted, and try a sustained “aah” vowel rather than “ee” or “oo” (which can suppress the fundamental). If the room is noisy, the microphone test tool can help you confirm your mic is picking up a clean signal before you start.

Related Tools

← All Audio Utilities

Pitch Correction Preview — Real-Time Auto-Tune Visualizer

Share or embed this tool

How It Works

Frequently Asked Questions

Related Tools