Free Optimus Prime Voice Changer Online

Before and after

Free Optimus Prime voice changer

Setting	Value
Noise gate	mutes the mic below -55 dB, between words
Pitch	-6 (lower)
Tone	-4 (sounds bigger)
Robot	30 Hz buzz, 10% mix
Flanger	wobbles 0.12 times a second, 35% mix
Bass	+5 dB below 130 Hz
Midrange	+2 dB around 2.5 kHz
Reverb	18% mix, 1.4 s long
Compressor	steadier volume (4:1 from -24 dB, then +4 dB)

01
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.
02
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.
03
Put it on a recording
Open Online Voice Changer, record or upload a file, choose the same settings and download the result.

Part	Setting	What you hear
Stature	Pitch -6, Tone -4	A very large speaker, low but unhurried
Metal body	Flanger 0.12 times a second, 35% mix	A slow resonance, as if the chest were a steel hull
Machine hint	Robot 30 Hz, 10% mix	A barely audible mechanical pulse
Weight and clarity	Bass +5 dB below 130 Hz, midrange +2 dB around 2.5 kHz	Rumble underneath, words still crisp
Open air	Reverb 18%, 1.4 s	A voice carrying across a wide space

Be warm and steady. This is a protector, so keep anger out and let gravity carry the lines.
Use measured sentences with a clear pause at every comma. The 1.4-second reverb fills each one.
Lean on words about duty, freedom and sacrifice, and land the final word of a speech low and slow.
Stand a hand's length back from the mic and project as if outdoors.

Opening and closing a stream or video with a short rallying speech.
Toy reviews, collection videos and stop-motion, recorded through the Online Voice Changer.
Tabletop and roleplay scenes that need a noble giant or a mech commander.
Fight scenes: the third clip adds distortion 0.3 for the same leader mid-fight, and the second raises the flanger to 60% for more of the metal body.

No. It is a sound-alike: your own voice lowered and given a metallic resonance with effects. No audio from the films, cartoons or toys is used.

Yes, as a base. Raise Pitch a few steps for a smaller robot, or add Distortion and more Robot mix for a harsher villain.

Yes. Upload or record the line in the Online Voice Changer, download the result and add it as the sound in your video.