Transform voices with 9 effects: Chipmunk, Deep Voice, Robotic, Alien, Echo, Telephone, Monster, Whisper, and Helium. Includes pitch shift, filters, distortion, and modulation controls.
Transform an uploaded voice recording with a stack of playful effects: pitch-and-speed change, robotic ring modulation, echo, distortion, and lowpass/highpass tone shaping. Pick a character preset (chipmunk, deep, robotic, alien, echo, telephone, monster, whisper, helium) or build your own from the individual controls. Built for fun, character voices, and content creation rather than studio-grade vocal processing.
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Convert text to speech using browser Web Speech API. Choose from multiple voices, adjust speed and pitch, and play audio directly.
Trim, cut, and slice audio files with interactive waveform visualization. Drag handles to select portions, use keyboard shortcuts, zoom and pan, preview selection before export. Supports MP3, WAV, OGG, AAC.
Convert audio files between WAV, MP3, OGG, AAC, M4A, FLAC formats online. Adjust bitrate and quality settings. Free browser-based conversion with no file uploads to servers.
You want an anonymised, lower voice for a narrated clip without sounding obviously processed.
Input
speech.wav · pitch −4 st · slight formant shift
Output
A deeper, disguised but still natural voice
Combining pitch and formant shifts changes vocal identity more convincingly than pitch alone, which on its own sounds robotic. Effects are applied locally so the original voice never leaves the device.
Transform an uploaded voice recording with a stack of playful effects: pitch-and-speed change, robotic ring modulation, echo, distortion, and lowpass/highpass tone shaping. Pick a character preset (chipmunk, deep, robotic, alien, echo, telephone, monster, whisper, helium) or build your own from the individual controls. Built for fun, character voices, and content creation rather than studio-grade vocal processing.
Create distinct character voices for videos, podcasts, or animations to preview and screen-capture.
Play around with how your voice sounds across the preset characters.
Dial in monster, robot, or chipmunk takes for skits and games.
Use extreme speed and modulation to rough out vocal textures.
The effects run on the Web Audio graph. Pitch is changed by altering the buffer's playbackRate, so pitch and speed move together (faster equals higher, like a tape machine), there is no separate formant control, which is why a heavily shifted voice takes on the classic chipmunk or monster character. The robotic effect is true ring modulation: a sine oscillator is multiplied into the signal to add metallic sidebands. Echo is a feedback delay line with adjustable amount and delay time. The tone-shaping filters are a lowpass and a highpass biquad (used for the telephone and alien voices), and distortion is a waveshaper curve with 4x oversampling.
Important limitation to set expectations honestly: the live preview plays the full effect chain, but the downloaded file currently applies only the speed/pitch change. The modulation, echo, filters, and distortion are preview-only and are not baked into the exported audio (the in-app tip says the same). So the download is best thought of as a pitch-and-tempo render of your take; for the full effected sound, listen in the preview. Export format follows the input where possible (MP3, WAV, or OGG), defaulting to MP3.
The tool processes uploaded audio in the browser and is not a live microphone effect for calls. For call use you would route browser audio output into your communication app via a virtual audio cable.
The export currently bakes in only the speed/pitch change. Modulation, echo, filters, and distortion are applied in the live preview but not written to the downloaded file.
Large speed shifts and heavy modulation or distortion push the effects to their limits, which can introduce artifacts. Dialing back slightly usually cleans it up.
Audio is decoded and processed locally with the Web Audio API. Your files are never uploaded to a server.