Convert any audio into any voice, instantly
Instant dub is zero-shot voice conversion: give it a source (text, a link, an upload, or a recording) and a short reference clip of the voice you want, and it converts one into the other in seconds — no model training and no clone to build first.
Background music is isolated from your source automatically and remixed back at the end, so you get a clean, studio-quality dub in under a minute — entirely in your browser.
Instant dub at a glance
- Setup
- Zero-shot — no training
- Speed
- Ready in 30–60s
- Inputs
- Any source + any voice
- Output
- Studio-quality dub
What is instant voice conversion?
Instead of training a model, instant dub reads the timbre of a reference voice and applies it to your source audio on the fly. You bring two things — the audio to convert and the voice to convert it into — and get a finished dub back.
- Convert any audio into any reference voice
- No model training or cloning step
- Vocals auto-isolated from background music
- Works from text, links, uploads, or recordings
- Pitch auto-detected, with manual override
- Runs in your browser on any device
How to make an instant dub
Source and reference
Every instant dub needs both — what to convert, and what to convert it into.
What you can do
Instant dub shines whenever you don’t want to commit to a full model.
Instant dub vs. cloning a voice
Two ways to put a new voice on your audio — pick the one that fits the job.
Bring your source from anywhere
Type it, paste a link, upload it, or record it — both the source and reference accept the same inputs.
Supported audio & video formats
Dial in the pitch
Pitch is detected automatically, but you can override it under Advanced settings.
Tips for the best instant dub
- Pick a clean, in-character reference clip — only ~20 seconds of vocals are used.
- Use a source with clear lead vocals; background music is isolated automatically.
- If the result sits too high or low, nudge the pitch in Advanced settings.
- Match the reference’s energy to the source for the most natural conversion.
- Short clips convert fastest — test a chorus before running a full track.
Why dub with VoiceDub
Everything you need to put a new voice on your audio, in one browser tab.
Convert responsibly
Voice conversion is powerful — use it with consent.
The rest of the studio
Instant dub is one part of VoiceDub. Explore the rest of the toolkit.
AI Voice Covers
Use one of 10,000+ user-created voices instead of a reference clip.
Voice Cloning
Train a dedicated model when you want the closest possible match.
Vocal Remover
Split any track into clean vocal and instrumental stems for free.
Vocoder
Shape and re-synthesize vocals with classic vocoder effects.
Instant dub — frequently asked questions
How does instant dub work?
Add any audio you want converted as the source, plus a short clip of the voice you want it converted into as the reference. We extract the timbre from the reference and apply it to the source — no training, no clone needed.
How long can the reference clip be?
We use about 20 seconds of vocals from whatever you provide as the reference. Pick a clean, in-character clip for the best results.
What if my source has background music or instrumentals?
No problem — we automatically isolate the vocals from your source before conversion, then remix the result with the original instrumental at the end.
Why is the pitch off?
Pitch is auto-detected from the source and reference voices. If it sounds a bit off, nudge it up or down with the pitch slider in Advanced settings.
How long does an instant dub take?
30 to 60 seconds for most clips. We run on dedicated GPUs so you don’t wait.
How is this different from cloning a voice?
Instant dub is zero-shot — it converts on the spot from a reference clip with no model to train. Cloning builds a reusable, dedicated model for the closest match. Use instant for one-offs, cloning for repeated, highest-fidelity use.
Do I need to install anything?
No. Instant dub runs entirely in your browser on any device — there’s nothing to download or set up.
Whose voice can I use as a reference?
Use your own voice or voices you have permission to use. Don’t convert audio into someone else’s voice without consent, and follow our Terms.