Audio tools
Free Voice Changer & Audio Effects
Change your voice online for free: robot, monster, radio, telephone and 40+ voice and audio effects. Upload a file, pick an effect, download the result — no install.
Slowed + Reverb
Slow down any audio — a song, a voiceover or an upload — and wrap it in dreamy reverb.
Nightcore
Turn any audio — a song, beat or voiceover — into a fast, high-pitched nightcore edit.
Lo-Fi
Give any audio — a song, beat or voiceover — a warm, cozy lo-fi color.
8D Audio
Make any audio — a song or voiceover — circle around your head with a rotating stereo pan.
Bass Boost
Add deep, powerful low end to any audio — a song, beat or voiceover — safely.
8-Bit
Crush any audio — a voice, beat or upload — into a crunchy retro video-game sound.
Telephone
Give any voice — a recording, upload or AI voiceover — a classic phone-call sound.
Vibrato
Add a smooth, musical pitch wobble to any audio — a voice, instrument or voiceover.
Underwater
Make any audio — a voice, song or voiceover — sound muffled and submerged, like it's underwater.
Megaphone
Give any voice — a recording, upload or AI voiceover — a loud bullhorn or announcer sound.
Phaser
Add a sweeping, jet-like whoosh to any audio — a voice, song or voiceover.
Jigsaw Voice
Turn any voice — a recording, upload or AI voiceover — into the deep, chilling Jigsaw voice from Saw.
Echo
Add a natural echo and sense of space to any audio — a voiceover, music track or AI voice.
Radio Pro
Give any voice — a recording, upload or AI voiceover — a radio, walkie-talkie or CB sound.
Metallic
Add a cold, ringing metallic sheen to any voice — a recording, upload or AI voiceover.
Demonic
Drop any voice — recording, upload or AI voiceover — into a deep, dark, demonic growl.
Monster
Turn any voice — a recording, upload or AI voiceover — into a huge, dark, creature-like sound.
Alien
Give any voice — a recording, upload or AI voiceover — a strange, otherworldly alien character.
Ghost
Turn any voice — a recording, upload or AI voiceover — into a distant, airy, ghostly whisper.
Shimmer
Add bright, shining sparkle to any audio — speech, music or an AI voiceover — with chorus and airy echo.
Reverse Verb
Add a rising, sucked-in reverb swell to any audio — speech, music or an AI voiceover.
Tremolo
Add a smooth, pulsing volume wobble to any audio — speech, music or an AI voiceover.
Chipmunk Voice
Make any voice — a recording, upload or AI voiceover — high, fast and playful like a chipmunk.
Cartoon Voice
Turn any voice — a recording, upload or AI voiceover — into a bright, animated cartoon character.
Helium Voice
Make any voice sound like it just breathed helium — high, light and squeaky, in one click.
Backwards
Play any audio — speech, music or an AI voiceover — backwards in one click.
Stutter
Add short, glitchy repeats and stutters to any audio — speech, music or an AI voiceover.
Chorus Fat
Thicken and widen any audio — speech, music or an AI voiceover — with a rich multi-voice chorus.
Robot
Turn any voice — a recording, upload or AI voiceover — into a mechanical robot sound.
Reverb
Place any voice or audio in a real space — a natural room, a bright studio plate or a huge cathedral.
Speed
Speed up or slow down any audio — speech, music or an AI voiceover — while keeping it clean.
Pitch
Raise or lower the pitch of any audio — speech, music or an AI voiceover — with one slider.
Loop
Repeat any audio — a sound, music or an AI voiceover — up to the exact length you need.
Volume
Make any audio — speech, music or an AI voiceover — louder or quieter, safely, with one slider.
Normalize
Even out the loudness of any audio — speech, music or an AI voiceover — for a balanced, comfortable level.
Vocoder
Turn any voice — a recording, upload or AI voiceover — into a melodic electronic voice, as if sung by a synthesizer.
No matching effects found.
How it works
01Choose the effect you want to apply.
02Upload an audio or video file, or record your voice.
03Adjust the effect, process the file and download the result.
Voice effects and a free voice changer, in your browser
SpeechGen turns any audio into a new sound — a robot, a monster, an echo, a phone call and dozens more. It works as a free online voice changer, voice modifier and voice filter: choose an effect, process your file and download the result. No sign-up, no watermark.
A
Made on SpeechGen
Type your text, generate a voiceover with our text-to-speech, and apply an effect to it in the same place — text to speech with voice effects, no extra tools.
B
Your own audio
Or upload your own file — music, a song, a recording or any speech in MP3, WAV and more — add an effect and download it for free.
Use the effects for videos and shorts, podcasts, music and beats, memes, games and character voiceovers — wherever you need a quick, clean voice transformation.