Real-time voice changer that runs entirely in your browser. Four presets, no download, no signup. Test it below — your microphone never leaves your device.
Most voice changers want you to install a desktop app, create an account, or pay for a subscription. This one wants none of that — it is a public utility tool built on the Web Audio API and runs in any modern browser.
No desktop client, no driver, no browser extension. Works on locked-down work laptops, Chromebooks, school computers, library PCs, and any phone with a modern browser.
Your voice transforms as you speak. Total added latency is well under 100 ms — fast enough for natural conversation, not a slow text-to-speech reading after you stop talking.
All voice transformation happens inside your browser using the Web Audio API. The raw audio never gets uploaded to a server for processing. The disguised stream is the only thing that leaves your device.
We do not record your voice — disguised or otherwise. No analytics on audio content, no waveform telemetry, no "training data" extraction. You can verify this in DevTools by inspecting outbound network requests.
Each preset combines a pitch shift, a tone-shaping filter chain, and formant emphasis. Here is what each one does technically and what it tends to sound like.
Lowers your fundamental frequency by 3 semitones and emphasizes chest-resonance formants around 300 Hz. Useful when you want to sound like a different, fuller-bodied voice without going full "monster."
Raises pitch by 3 semitones and brightens the upper formants around 850 Hz and 2.4 kHz. The result sounds lighter and more forward — useful for shifting perceived age or gender presentation.
Barely shifts pitch but heavily bandpass-filters your voice (350 Hz – 2.4 kHz). The result sounds muffled and far away — like a voice through a closed door or an old phone line.
Adds a 55 Hz ring modulation on top of a moderate pitch shift. The ring mod makes the voice clearly synthetic and hard to biometrically match — but still intelligible.
No tutorials required. Three steps.
Tap one of the four presets in the panel above. The choice is immediate — there is no "apply" button.
Click Test mic & voice. Your browser will ask for microphone permission. Speak — you will hear yourself through the disguise.
Either join a private voice room with friends, or route your browser audio into another app via a virtual audio cable. See the Discord guide below.
Some common scenarios — the tool is general-purpose, but these are the most-asked-about uses.
Pair it with Discord, TeamSpeak, in-game voice, or a streaming studio. See the Discord setup guide →
Try out characters before recording. Useful for reading scripts, auditioning for different voice ranges, or prototyping animation dialogue.
Join a private voice room with friends or family using a shared URL. No phone number, no account, no exposed identity.
Works alongside Zoom, Google Meet, Teams, and similar platforms via a virtual audio cable — the same approach as the Discord guide.
Support groups, study circles, language exchange, and other contexts where participants prefer not to be identifiable by voice.
Voice-change as a joke on a friend (within reason), prank your sibling on a call, or just explore what your voice sounds like at different pitches and formant settings.
Quick technical walk-through, because privacy claims should be inspectable.
The voice changer is a chain of Web Audio API nodes assembled in your browser the moment you grant microphone access. The audio flow looks like this:
getUserMedia() (your mic)
↓
MediaStreamAudioSourceNode
↓
Jungle pitch shifter (dual-delay-line algorithm by Chris Wilson)
↓
BiquadFilter chain — highpass + lowpass tone shaping
↓
BiquadFilter chain — peaking filters for formant emphasis
↓
[optional] Ring modulator (oscillator into gain.gain for "robotic")
↓
MediaStreamAudioDestinationNode
↓
Either: local <audio> element (sample mode)
or: RTCPeerConnection.addTrack() (room mode, peer-to-peer)
The pitch-shift algorithm is the same one Chris Wilson published in the Audio-Input-Effects reference for the Web Audio API team — two delay lines with sawtooth-modulated delay times, crossfaded by square-root envelopes. Quality is good enough that the result is intelligible and clearly different from your real voice, but it is not a biometric scrubber.
If you choose to join a voice room with friends, your disguised audio stream is sent peer-to-peer over WebRTC. We operate a signaling server (just for ICE negotiation and room membership) and a TURN relay (for NAT-restricted connections). Neither stores audio; both are operational infrastructure for routing the encrypted media stream.
No accounts, no recording, no analytics on voice content.
Quick answers to the most common questions.
Yes, completely. No account, no email, no payment, no ads. Essex Software runs this as a no-cost utility alongside its other browser-based tools.
No. The voice changer runs entirely in your browser using the Web Audio API. Open the page, grant microphone access, pick a preset, and you are running.
Chrome, Edge, Firefox, and Safari on desktop. Mobile Safari and Chrome on iOS and Android also work, though iOS Safari sometimes needs a tap to start audio. Any browser with full Web Audio API support is compatible.
No. All voice processing happens inside your browser. Audio is never uploaded to a server for transformation. If you join a private room with others, your processed (disguised) audio is sent peer-to-peer via WebRTC — never stored.
Yes, with a virtual audio cable that routes browser audio into the other app as a microphone input. We have a dedicated guide for Discord setup on Windows, Mac, and Linux. The same approach works for Zoom, Google Meet, Teams, OBS, and most other voice apps.
No. This is real-time voice obfuscation suitable for casual disguise, voice acting, or privacy in social contexts. It is not a security boundary. A determined attacker with biometric analysis tools can partially de-identify the voice. Do not rely on this for high-stakes anonymity.
Voicemod and Clownfish are desktop applications you install. This voice changer runs in any browser, which means it works on Chromebook, Linux, work computers, and shared machines where installing software is not an option. The trade-off is slightly less polish on extreme effects — the focus here is intelligibility plus disguise.
Under 100 milliseconds of added latency on the disguise chain itself. The Jungle pitch shifter uses a 100 ms grain window plus a 50 ms crossfade. Total perceived delay including microphone capture and audio output is typically 150–250 ms — fine for natural conversation.
Yes. The voice chain is rebuilt and the outbound track is swapped via RTCRtpSender.replaceTrack — no reconnection needed. The other people in the room hear your voice change in real time.
Because Discord uses its own microphone input — not your browser audio. You need a virtual audio cable to route the disguised browser stream into Discord as a "microphone." See the Discord setup guide for step-by-step on Windows (VB-CABLE), Mac (BlackHole), and Linux (PulseAudio loopback).