Voice Changer turns a recording into a robot, a deep voice, a chipmunk and more. It is made for fun and creative projects, and your audio is processed in your browser, never uploaded.

How to Use#

Under Voice source, choose Record or Upload file.
- Record: click Start recording, allow microphone access, then click Stop recording. Click Record again to replace the clip.
- Upload file: drop an audio file (MP3, WAV, M4A, FLAC, OGG and more).
Pick an Effect: Pitch only, Robot (selected by default), Deep, Chipmunk, Echo, Radio / phone, Alien or Cave / hall.
Adjust Pitch (-12 to +12 semitones) and Effect amount.
Choose a Download format: WAV (default) or MP3.
Click Apply effect and listen to the result in the player.
Click Download WAV or Download MP3.

Things to know#

Recording length: recording stops by itself after 5 minutes.
Keep original speed: on by default, so the pitch changes but the timing stays the same. This uses an audio engine of about 30 MB, loaded once. Turn it off for a faster tape-style effect where higher pitch also plays faster.
MP3: encoding to MP3 also loads the audio engine the first time. If MP3 encoding fails, you can still download the WAV.
Effect amount blends the effect with your original voice. Lower means more of the original. It shows "n/a" for effects that only change pitch (Pitch only, Deep, Chipmunk).
Changing a setting after applying means you need to click Apply effect again.
Browser support: needs Web Audio rendering, which current Chrome, Edge, Firefox and Safari have.
Privacy: audio stays on your device.

Tips#

Pitch only with a few semitones up or down is the most natural-sounding change.
Echo and Cave / hall sound clearer at a lower effect amount.