Muffled Voice Effect: Free Online, No Sign Up

More versions

Variation: Treble cut at 500 Hz with a short reverb: through a wall.
Variation: Treble cut at 1.6 kHz: a hand or a scarf over the mouth.

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

What gets through the wall

Part	Setting	What you hear
The wall	Treble cut above 900 Hz	Consonants disappear; vowels and rhythm are all that remain
Thump	Bass +3 dB below 200 Hz	The chesty boom that carries through solid things
Pitch	0 (unchanged)	Still recognisably your voice and melody
Level	Compressor 3:1 from -24 dB, then +6 dB	The filtered voice is brought back up so it isn't faint

Acting through a door

Let melody carry the meaning. With the consonants gone, listeners follow the rise and fall of your sentence, so exaggerate questions, complaints and laughter.
Raise your voice as if you really were in the next room. An argument, a phone call or singing in the shower reads at once.
Choose lines the audience can guess. A name being called or a knock-and-answer works; a list of instructions doesn't.
Turn your head away from the mic for the far side of the room and back toward it as you 'approach the door'.

Scenes that need a muffled voice

Use it for a character locked in a cupboard or a car boot in a comedy sketch, neighbours overheard in an audio drama, a 'talking with my mouth full' bit, or the moment in a video when someone pulls a blanket over their head. In a group call it works as a quick joke when you pretend to have left the room. The through-a-wall clip cuts at 500 Hz and adds a short 0.6-second reverb, so the voice is clearly in another room. The clip that cuts at 1.6 kHz is much milder: a hand or a scarf over the mouth, with most words still readable.

The exact settings

Setting	Value
Pitch	0 (unchanged)
Treble cut	above 900 Hz
Bass	+3 dB below 200 Hz
Compressor	steadier volume (3:1 from -24 dB, then +6 dB)

Free Muffled voice effect FAQ

How is muffled different from the underwater voice?

Underwater adds a wobble and a lower pitch on top of the filtering. Muffled leaves pitch at 0 and only removes the top, so it sounds like a barrier, not water.