Overlapping frames estimate one dominant fundamental frequency before voiced notes are shifted.
TUNE / AVAILABLE NOW
Autotune
Pull vocal notes into place. Correct a monophonic vocal toward a chromatic, major, or minor scale without uploading it.
TUNE / local toolOffline monophonic pitch correction
Original and processed previews appear here.
GUIDE / autotune online
What does autotune online change in a vocal?
Online autotune detects the fundamental pitch of a monophonic vocal and moves voiced notes toward allowed notes in a selected scale. SoundTools performs that analysis and correction inside a browser worker, leaves unvoiced frames alone, preserves the timeline, and creates a local WAV you can compare before downloading.
RELATED USES
- free autotune online
- auto tune voice
- online vocal tuner
- pitch correction online
FIELD NOTES / 01
Choose the scale before you choose the strength
Start with one dry vocal line and identify its intended key when possible. Chromatic mode pulls each detected pitch toward the nearest semitone. Major and minor modes restrict correction to the seven notes in the selected root scale, so a wrong key can move an otherwise acceptable note in the wrong direction.
For a more natural cleanup, begin around 30–60% correction, use an 80–150 ms retune speed, and keep some humanize. For an obvious hard-tuned effect, move correction toward 100%, shorten retune speed toward 10–30 ms, and reduce humanize. Render more than one version and compare consonants, breaths, and sustained notes before saving.
REFERENCE / MODE CHOICE
Autotune vs pitch shifting vs voice effects
All three can change how a voice sounds, but only pitch correction uses detected notes and a musical scale.
| Approach | Best for | What changes | Important limit |
|---|---|---|---|
| Autotune / pitch correction | Tightening one sung melody toward a key | Detected voiced notes move toward chromatic, major, or minor scale targets | Needs a clear monophonic vocal and the correct key for scale-aware modes |
| Constant pitch shift | Transposing an entire voice or sample | Every pitched moment moves by the same semitone interval | It does not decide whether individual notes are in tune |
| Voice changer preset | Robot, telephone, monster, deep, or chipmunk characters | Pitch and timbre effects create a new sound character | It is an effect, not musical note correction or identity cloning |
PROCESS / THREE STEPS
How to use autotune online on a recorded vocal
- 01
Choose one clear vocal take
Use a dry monophonic recording with one dominant melody. Reduce strong background noise first; chords, backing vocals, and heavy reverb make pitch detection less reliable.
- 02
Set the root, scale, and correction style
Choose chromatic when the key is unknown, or select the correct major or minor scale. Then balance correction strength, retune speed, and humanize for a natural or deliberately hard-tuned result.
- 03
Render, compare, and export
Process the complete recording locally, compare the original and pitch-corrected players, and download the selected version as WAV.
SIGNAL NOTES / VERIFIED BEHAVIOR
What this tool actually does
Clear limits are part of a useful tool. These values describe the processor currently running in this page.
Twelve roots and three scale modes control which target notes the processor may use.
Strength, retune speed, and humanize shape how closely and how quickly notes move toward the scale.
USE CASES / 02
Autotune settings for three common vocal jobs
- Natural demo cleanup
Use the correct key, moderate strength, slower retune, and some humanize to tighten a mostly accurate solo take.
- Hard-tuned vocal effect
Use high strength, fast retune, and low humanize when audible note snapping is the intended character.
- Private pitch practice
Render a short dry phrase in chromatic and key-aware modes, then compare where the detected melody changes.
QUESTIONS / PRACTICAL ANSWERS
Questions about this tool
Answers based on the current browser processor—not promises about a future version.
01Does this autotune work with a live microphone?
No. This version analyzes and renders an uploaded recording offline. It is designed for careful before-and-after comparison, not live monitoring or performance.
02Can autotune fix a full song or harmony?
No. It expects one dominant vocal melody. A full mix, chords, doubled vocals, and harmonies contain several pitches at once and can produce incorrect targets.
03Which scale should I choose for autotune?
Use the song’s root and major or minor scale when you know the key. Use chromatic mode when you want the nearest semitone without excluding notes outside one seven-note scale.
04What settings make autotune sound natural?
Begin with 30–60% correction, an 80–150 ms retune speed, and some humanize. The best values depend on how far the original notes are from their intended targets.
05How do I create a hard autotune effect?
Move correction close to 100%, shorten retune speed toward 10–30 ms, and lower humanize. Fast movement makes transitions between detected notes more obvious.
06Why does a corrected note wobble or sound wrong?
The detector may be following breath, room noise, reverb, another voice, or an instrument instead of one stable fundamental. Try a cleaner, drier solo take and verify the selected key.
07Is the vocal uploaded for pitch correction?
No. Decoding, YIN pitch detection, granular processing, preview, and WAV creation run in the browser. The selected recording is not sent to an application endpoint.