Voice Cloning Policy
Voice cloning is open on CastDub, and these are the rules it runs under. Cloning is the feature with the widest gap between what is technically easy and what is acceptable, so this page also lists the requests we refuse and why.
Consent must be recorded, not asserted
A cloned voice can only be made from one kind of recording: the person whose voice it is reading, aloud, a short statement that names them, states the date and confirms that they agree to the recording being used as their voice. It takes eight to fifteen seconds. The studio shows the statement, and the recording can be made in the browser or uploaded, but it must be that statement in that person's voice.
That recording is the voice. We do not train a model from it; each time a line is synthesised, the recording itself is handed to our speech synthesis provider. So the consent record and the voice cannot be separated: every cloned voice on the service is its own evidence of consent, and there is no route that lets a clone exist without one.
Before recording, the account holder also confirms that the voice is their own and that they are 18 or older. Only your own voice can be cloned, in your own account. A written message, a screenshot or a ticked checkbox on its own is not a substitute: those are assertions about consent, and the recording is the evidence.
What we will never clone
Public figures, including politicians, executives and celebrities. Performers, including voice actors and the actors behind specific characters. Neither is unlocked by a parody framing, a research framing, a disclaimer, or an enterprise agreement.
Anyone under eighteen. There is no consent process that unlocks this, including parental permission. A cloned voice of an identifiable child is a tool for impersonating that child and no creative requirement justifies making one. The child characters in our library are performed by adult voices playing young, the way animation casts children; nothing in them is a recording of a child.
Deceased people. This is the request we receive most often, usually from someone who wants to hear a parent or grandparent read to their children. We understand it completely and the answer is still no: consent cannot be obtained after death, and in most jurisdictions an estate cannot grant it retroactively. What we can help with is casting a library voice in a similar register and using it as a character, which is a different thing from an impersonation and is the version that does not go wrong.
Deletion and withdrawal
The account holder can delete a cloned voice from the studio at any time. The person whose voice was cloned can have it deleted by contacting us, whether or not they own the account that created it. We do not ask for a reason and we do not require the account holder's agreement. Withdrawn consent is consent withdrawn; any other policy would make the consent meaningless.
Deleting a cloned voice deletes the consent recording — which is the voice — and every line of audio generated with it. Characters that used it go back to a library voice. We keep only a log entry that the clone existed and was deleted, without the audio.
If you are a voice performer
If you believe a clone of your voice exists on this service without your consent, contact us and we will investigate and, where the claim holds up, delete it and close the account that made it. You do not need a lawyer to start this conversation.
If you want to license your voice deliberately — as a library voice with a revenue share — that is a programme we are building, and the partnership page is where to start.
Why we are strict about this
Not primarily because of legal exposure, although that is real. It is because a voice cloning tool with loose rules becomes, quite quickly, a tool whose main use is impersonation — and then the legitimate uses become impossible, because audiences stop believing any recording.
The rules above cost honest users about fifteen seconds each. They cost dishonest users the whole product. That is a trade we are happy to make.