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This paper investigates LoRA fine-tuning of the VoxCPM2 TTS model to improve quality for low-resource languages like Khmer, while showing no gain for Korean which the base model already handles well. The adapter yields significant MOS improvement for Khmer with minimal parameter training.
GitHub open-source project VoxCPM2 achieves AI voice cloning without reference audio, generating target voice precisely with just one sentence, has gained 20K stars.