Robot Voice Changer
Turn a recording into a robot voice with real ring-modulation DSP. Compare before and after, then export a WAV.
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Audio is processed locally and never uploaded.
Robot effect preset
A real voice changer, not a playback trick
A robot voice changer modifies audio you already have — a voice memo, a podcast take, a line recorded for a game — instead of synthesizing speech from text. That makes it the right tool whenever timing, emotion, or your actual performance matters: you act the line first, then let the effect do the robot. Uploaders get to fix a flawed narration without re-recording, and the change is reversible because the original is always kept one click away for A/B comparison.
Under the hood this page applies genuine digital signal processing with the Web Audio API. The core is a ring modulator: your voice waveform is multiplied by a sine-wave carrier (50 Hz in the Classic Robot preset), which restructures its harmonic spectrum into the buzzy, metallic timbre heard in movie robots and vintage vocoder experiments. A second path adds a slowly modulated delay — a detuned chorus — that gives the voice width and a synthetic edge. Six presets combine these building blocks in different proportions, from the slow, heavy Deep Droid to the squeaky Chipmunk Bot.
Processing is done with an offline audio context, meaning the entire effect is rendered in one pass at full quality rather than streamed with glitches, and the result is encoded to a 16-bit WAV you can drop straight into Premiere, Audacity, DaVinci Resolve, or any DAW. Files are decoded in your browser and never uploaded, so long clips and private material stay on your machine. If you would rather start from text instead of a recording, the text to speech page generates robotic speech directly.
Frequently Asked Questions
▸How do I change my voice into a robot voice?
Upload an audio file or press Record and speak into your microphone. Then pick a preset like Classic Robot and click Apply. Your voice is passed through a ring modulator and a detuned chorus, and the result appears in a player where you can compare it with the original and download it as WAV.
▸What audio formats can the robot voice changer import?
Any format your browser can decode: WAV, MP3, M4A/AAC, OGG, and WebM are all supported. The export is always standard 16-bit WAV, which imports cleanly into every video and audio editor.
▸Is my recording uploaded to a server?
No. Decoding, effect processing, and WAV export all happen locally with the Web Audio API. Your audio never leaves the device, which also means the tool keeps working even if your connection drops mid-session.