voice cloning

Voice cloning generates speech that sounds like a specific person using samples of their voice. **Approaches**: **Speaker adaptation**: Fine-tune TTS model on target speaker samples (minutes to hours of audio). **Zero-shot cloning**: Encode speaker embedding from few seconds of audio, condition TTS on embedding. **Speaker verification**: Confirm cloned voice matches target identity. **Key models**: YourTTS, XTTS (Coqui), Tortoise TTS, VALL-E (Microsoft, 3 seconds), ElevenLabs (commercial leader). **Technical components**: Speaker encoder (extract voice characteristics), speaker-conditioned decoder, voice consistency across utterances. **Quality factors**: Voice similarity, naturalness, expressiveness preservation, accent/language handling. **Ethical concerns**: Deepfakes for fraud, impersonation, misinformation, non-consensual voice use. Many platforms require consent verification. **Detection**: Watermarking cloned speech, deepfake detection models, provenance tracking. **Legitimate uses**: Deceased voice preservation, accessibility, personalized assistants, dubbing, voice banking for those losing speech. Balance between innovation and harm prevention is critical.