Sing a note and watch it snap into tune: the cyan line is your voice, the magenta line the corrected one. Pick the key of your song, turn Retune speed down to zero for the hard robotic effect, add a harmony a third above. No mic at hand? Play the demo voice.
Pitch correction listens to your voice, finds the nearest note of the scale and moves you onto it, many times a second.
Choose the key and the scale of your song, and the PT-1 only lets those notes through: a note sung between A and B in C major goes to the closer of the two. Click the twelve note keys to skip a note you never want, or to build your own scale.
Retune speed sets how fast the correction reaches the note. Around 80 ms it gently pulls long notes into tune and keeps your vibrato. At zero it jumps from note to note with no slide at all: the stepped, robotic sound heard all over pop, trap and R&B.
The PT-1 cuts your voice into tiny grains, one per vocal cycle, and lays them closer together or further apart to change the pitch. The vowels and the colour of your voice stay yours, and the whole process stays under 40 ms, short enough to sing along.
Switch on a second voice a third, a fifth or an octave above. It stays inside the scale, so a third above D in C major is F, not F sharp. Transpose the lead up or down an octave, or a fifth down for a deep voice, and record the take.
The scrolling graph draws your pitch over the lines of the allowed notes, and the tuner shows how many cents you sit above or below the nearest note. Turn Mix down to zero and it becomes a singing coach: you hear yourself untouched and see where you drift.
All the processing happens in your browser: nothing is uploaded, and the takes you record are saved straight to your computer or phone. No microphone at hand? The built-in demo voice sings a little out of tune so you can hear every setting.
With speakers, the corrected voice reaches the microphone again and starts to howl. Any wired headphones will do.
Allow the microphone, then sing a long note. The cyan line shows your pitch, the magenta line the corrected pitch.
Pick the key of your song and its scale. Not sure? Chromatic corrects to the nearest semitone and works with any song.
Natural for a light touch, Hard tune for the robotic sound, Duet for a harmony. Then press Record to keep the take.
| Type | Real-time pitch correction for the voice, playable on this page, free |
|---|---|
| Detection | YIN on a 24 kHz copy of the signal, every 8 ms, about 75 Hz to 1,100 Hz |
| Correction | TD-PSOLA: one grain per vocal cycle, two-period Hann window, normalised overlap-add |
| Latency | About 36 ms, plus the delay of your audio device |
| Scales | Chromatic, major, minor, harmonic minor, dorian, major pentatonic, minor pentatonic, blues, custom |
| Retune speed | 0 ms (robot) to 400 ms (natural) |
| Transpose | -12 to +12 semitones |
| Harmony | Off, third, fifth or octave above, inside the scale, with its own level |
| Other controls | Mix (dry to wet), gate from -70 to -20 dB, input gain, bypass, listen on or off |
| Display | Scrolling pitch graph (voice, corrected voice, harmony), note name, tuner in cents |
| Recording | The corrected voice, downloaded as WebM or M4A depending on the browser |
| Requirements | A recent Chrome, Edge, Firefox or Safari and a microphone; headphones recommended |
Pitch correction measures the pitch of your voice many times a second, compares it with the notes of the key you chose, and shifts the voice by the small difference. Used gently, it tidies up a take without anyone noticing. Used with a fast retune speed, it becomes an effect of its own: the voice jumps from note to note like a keyboard, which is why it is often called the robot voice.
Sing close to the microphone in a quiet room, and raise the Gate if the graph draws lines when you are silent. Choose the right key: in the wrong one, correct notes get pulled to wrong ones. For the hard effect, glide between notes on purpose, the steps are what make it sound that way. Breathy and whispered sounds have no pitch, so the PT-1 lets them through untouched.
Record the corrected voice and keep building: loop it on the LP-3 Triple Looper, play it on pads with the Voice Sampler, or talk through a synth with the Vocoder. GOONS Studio is free for 7 days, no card required.
Yes. The PT-1 at the top of this page is free, with no account and nothing to install. Your voice is processed in your browser and is never uploaded.
Press Hard tune, or turn Retune speed all the way down to ROBOT. Pick the key of the song, then glide between notes: the voice jumps from note to note with no slide.
The speakers are feeding the corrected voice back into the microphone. Wear headphones, or turn Listen off while you record.
The key of the song you sing. If you do not know it, choose Chromatic: every note is allowed and the voice goes to the nearest semitone, which works with any song.
Yes. Press Play the demo voice: a built-in voice sings a little out of tune, and you hear and see the PT-1 correct it with your settings.
No. The PT-1 is an original GOONS pitch corrector. Auto-Tune is a trademark of Antares Audio Technologies; the word is used here in its everyday sense of a pitch correction effect, and GOONS is not affiliated with Antares.
The PT-1 is free, with no account. GOONS Studio adds samplers, loopers, drum machines and a sequencer that play together - free for 7 days, no card required.
Free on this page, no account. Open the Vocoder →