Voice Changer — Real Voice Transformation Online
33 voice presets with pitch shifting, formant control, ring modulation, vocoder, echo and distortion
Transform your voice with professional DSP technology running entirely in your browser. Unlike simple voice changers that just add equalizer presets, this tool uses a real phase vocoder for pitch shifting without changing speed, independent formant manipulation to alter vocal tract resonances, ring modulation for metallic effects, a channel vocoder for robotic voices, echo/delay for spatial effects, and distortion for aggressive tones. 33 unique presets organized in 5 categories: Basic, Characters, Sci-Fi & Fantasy, Effects, and Emotions. The "Surprise Me" button picks a random preset for instant fun.
Key Features
- 33 voice presets in 5 categories: Basic, Characters, Sci-Fi, Effects, Emotions
- Phase vocoder pitch shifting — change pitch without changing speed or duration
- Independent formant shifting — alter vocal tract resonances separately from pitch
- Ring modulation — metallic and robotic voice effects with adjustable carrier frequency
- Channel vocoder — classic talking synthesizer with sawtooth, square and noise carriers
- Echo/Delay — spatial echo effect with adjustable feedback
- Distortion — overdrive effect from subtle warmth to aggressive grit
- Speed control — change playback speed with automatic pitch compensation
- Reverse playback — play and export audio backwards
- "Surprise Me" — random preset picker for instant fun
- Real-time microphone mode — hear your transformed voice live as you speak
- Before/After comparison — toggle between original and transformed voice
- Spectrum analyzer — visualize the transformation in real-time
- Download as WAV, MP3 or OGG
- 100% browser-based — complete privacy, zero data collection
How to Transform Your Voice
- Upload an audio file or switch to Microphone mode for live transformation
- Select a voice preset from 33 options across 5 categories, or hit "Surprise Me" for a random pick
- Fine-tune Pitch and Formant sliders — these are the core of voice transformation
- Add Ring Modulation for metallic effects or enable the Vocoder for robotic synthesis
- Open Advanced Effects for Echo, Distortion, Reverb, Compression and Noise Gate
- Use Reverse to play audio backwards, or adjust Speed for slow/fast effects
- Use the Compare button to switch between original and transformed voice
- Download the result as WAV, MP3 or OGG
Frequently Asked Questions
How is this different from other voice changers?
Most online voice changers use simple equalizer presets and pitch shifting via playback speed changes. This tool uses a real phase vocoder that shifts pitch in the frequency domain without affecting duration, plus independent formant shifting that changes your vocal tract characteristics. With 33 presets, echo, distortion, reverse, speed control and vocoder, this is one of the most comprehensive browser-based voice changers available.
What makes a voice unrecognizable?
Speaker identification relies on formant patterns (resonant frequencies of the vocal tract). Simple pitch shifting can be reversed. Formant shifting changes these resonant patterns, making the voice sound like a completely different person. Combining pitch shift, formant shift, and ring modulation makes identification virtually impossible.
What is formant shifting?
Formants are the resonant peaks produced by your vocal tract (throat, mouth, nasal cavity). They determine the perceived character of your voice — whether it sounds male, female, young, or old. Formant shifting moves these resonances independently from the pitch, allowing you to change the perceived gender or age of a voice without the "chipmunk" effect.
What is a vocoder?
A vocoder analyzes your voice into frequency bands and uses those bands to modulate a synthesizer carrier signal (sawtooth, square wave, or noise). The result is a robotic, synthesized version of your speech that preserves the rhythm and articulation but replaces the natural voice with a synthetic timbre.
What does the Speed control do?
The Speed control changes how fast the audio plays back (0.5x to 2x) while automatically compensating the pitch so your voice doesn't sound higher or lower just from the speed change. This lets you create slow-motion or fast-forward effects while keeping the voice transformation accurate.
Does the live mode have delay?
The phase vocoder introduces approximately 40ms of latency due to the FFT analysis window. This is below the threshold of noticeable delay for most users, especially with headphones. Use headphones to prevent audio feedback.
Is my voice data sent to a server?
No. All audio processing happens entirely in your browser using the Web Audio API AudioWorklet. Your voice never leaves your device. Nothing is uploaded, stored, or transmitted.
Can I use this for videos or streaming?
Yes. Record your transformed voice, download the file (WAV, MP3 or OGG), and import it into your video editor. For live streaming, use the microphone mode with headphones and route the audio output to your streaming software via a virtual audio cable.
Why Use This Voice Changer
Real DSP technology — not just equalizer presets. 33 unique voice presets organized in 5 categories. Phase vocoder pitch shifting preserves natural speech timing. Independent formant control changes perceived speaker identity. Ring modulation, vocoder, echo, distortion and reverse for creative freedom. Speed control with pitch compensation. Real-time microphone mode with live feedback. "Surprise Me" for instant fun. Export to WAV, MP3 or OGG. No registration, no limits, complete privacy. Free forever.
