Free Prototype Voice Changer

A free low, mechanical voice that sounds like several voices stitched together.

Before and after

Free Prototype voice changer

Real-Time Voice Changer: change your voice live

Your browser will ask for microphone access when you click.

More versions

Variation: Pitch +2 and Tone +3: the machine borrowing a smaller voice.
Variation: Chorus off: one voice instead of several stitched together.

Use it in calls and on recordings

Try it here
Press Start mic above and talk. You hear this voice with the exact settings on this page, and every slider can be moved.
Use it live
Press Use this voice in calls, then pick Facecam Virtual Mic as the microphone in Discord, Google Meet, Zoom or any other call that runs in Chrome.
Put it on a recording
Open Online Voice Changer, record or upload a file, choose the same settings and download the result.

More about this voice

One machine, more than one voice

Part	Setting	What you hear
Stitching	Chorus 0.35 times a second, 50% mix	A second copy of you drifting in and out of step
Machine	Robot 45 Hz buzz, 20% mix	A low motor tone inside the words
Depth	Pitch -5	Lower and slowed, with the tone following
Scrap	Distortion 0.3, 45% mix	A scraped-metal edge
Factory	Reverb 22% mix, 2 s long	A large empty hall below ground

Speak like something that learned speech by copying

Keep the delivery level and patient, with equal weight on every word. It should sound assembled, not felt.
The effect layers voices but can't imitate anyone. To suggest a borrowed voice, change your own accent or age for one phrase, then return to the flat tone.
Wait for the 2-second reverb to finish before starting the next sentence.
Promises, offers and calm instructions suit it. Shouting flattens the chorus and loses the layered sound.

The three Prototype clips

As it loads: the full composite voice. Use it for monologues and for the character's reveal.
Pitch +2 and Tone +3: the machine borrowing a smaller voice. Switch to it for a line spoken as someone else, then go back.
Chorus off: one voice instead of several stitched together. It is the clearest of the three, which helps when listeners need to follow a long explanation.

Moving between the first two mid-scene sells the character: the low composite voice makes an offer, the smaller one answers in someone else's manner, and the low one returns. Only Pitch and Tone differ, so two sliders do the whole switch.

The exact settings

Setting	Value
Noise gate	mutes the mic below -50 dB, between words
Pitch	-5 (lower)
Tone	moves with the pitch
Robot	45 Hz buzz, 20% mix
Distortion	drive 0.3, 45% mix
Chorus / vibrato	wobbles 0.35 times a second, 50% mix
Bass cut	below 90 Hz
Treble cut	above 7 kHz
Midrange	+2 dB around 1.2 kHz
Reverb	22% mix, 2 s long
Compressor	steadier volume (5:1 from -26 dB, then +5 dB)

Free Prototype voice changer FAQ

Is this the Prototype's voice from Poppy Playtime?

It's a sound-alike built from pitch and effects on your voice. It isn't audio from the game and it isn't an official voice.

Can it copy another character's voice like he does?

No. The effects make one layered machine voice. Any imitation is your own acting; the higher variation helps suggest a different speaker.

Why does it sound like two people?

That's the chorus at 50%: a slightly detuned copy of you that drifts slowly against the original.

Does it work in Discord?

On discord.com in Chrome, yes. Switch off Discord's noise suppression there, or the 2-second reverb gets cut short.