Giant Robot Voice Changer: Free Online, No Sign Up

More versions

Variation: Reverb 4 s: powering up inside the hangar.
Variation: Reverb off, band narrowed: the pilot's voice over the mech's speakers.

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

How the voice gets building-sized

Part	Setting	What you hear
Scale	Pitch -9, Tone -6	A voice from something many times your size
Engine	Robot 35 Hz, 45% mix	A slow mechanical throb, like heavy machinery idling
Hull	Bass +5 dB below 140 Hz, treble cut above 5 kHz	Deep rumble with a dull top
Distance	Reverb 22%, 2 s	Sound rolling back off buildings

Speak like something that moves slowly

Halve your speed. Nine steps down blurs fast speech, and a giant shouldn't hurry.
Use lines of three to six words: system states, targets, warnings.
Wait for the two-second tail to fade before the next line.
Speak a little higher and brighter than normal. The settings pull you far down, and starting high keeps the words readable.

Giant robot, Optimus Prime or the giant?

The Optimus Prime-style voice is a character: six steps down, robot buzz at only 10%, warm and clear enough for speeches. The giant voice is a huge living creature with no machine in it. The giant robot goes lower than both and is nearly half buzz, so it is for scale and threat, not conversation. Two clips change the scene: reverb at 4 seconds and 35% for powering up inside the hangar, and reverb off with the band narrowed to 300 Hz–3.5 kHz for the pilot's voice over the mech's speakers.

The exact settings

Setting	Value
Noise gate	mutes the mic below -50 dB, between words
Pitch	-9 (lower)
Tone	-6 (sounds bigger)
Robot	35 Hz buzz, 45% mix
Bit crusher	10-bit, 50% mix
Flanger	wobbles 0.15 times a second, 45% mix
Bass cut	below 60 Hz
Treble cut	above 5 kHz
Bass	+5 dB below 140 Hz
Midrange	+3 dB around 1.2 kHz
Reverb	22% mix, 2 s long

Free giant robot voice changer FAQ

Why is the giant robot hard to understand?

Pitch -9 with a 35 Hz buzz leaves little detail. Talk slowly, or raise Pitch to around -6 and lower the Robot mix.

Does it work in VRChat or other desktop games?

No. Desktop games can't select Facecam Virtual Mic; it only shows up in sites open in a Chrome tab. For game footage, record the lines in the Online Voice Changer and add them in the edit.