The Problem
In 2026, a 5-second audio clip is enough to produce a high-quality clone of anyone's voice with a consumer GPU. ElevenLabs, F5-TTS, OpenVoice v2, VoiceBox all ship zero-shot or few-shot cloning. The technology is a blessing (accessibility TTS, dubbing, assistive voices) and a weapon (scam calls, political deepfakes, IP theft).
Two closely-related tasks:
- Voice cloning (TTS-side): text + 5-second reference voice → audio in that voice.
- Voice conversion (speech-side): source audio (person A saying X) + reference voice of person B → audio of B saying X.
Both factor a waveform into (content, speaker, prosody) and recombine content from one source with speaker from another.
Key constraint you now ship under in 2026: watermarking and consent gates are legally required in the EU (AI Act, enforceable August 2026) and in California (AB 2905, effective 2025). Your pipeline must emit an inaudible watermark and refuse non-consensual clones.
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