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VoiceCloak: A Multi-Dimensional Defense Framework against Unauthorized Diffusion-based Voice Cloning

Created by
  • Haebom

Author

Qianyue Hu, Junyan Wu, Wei Lu, Xiangyang Luo

Outline

To address concerns about the increasing exploitability of voice cloning (VC) techniques based on diffusion models (DMs), this paper presents VoiceCloak, a multi-dimensional preemptive defense framework. Considering the complex generation mechanism of DMs, VoiceCloak aims to obfuscate speaker identification and degrade recognition quality by introducing adversarial perturbations to reference audio. Specifically, to obfuscate speaker identification, it distorts representation-learned embeddings based on auditory perceptual principles to maximize identification variance and disrupts conditional guidance processes (particularly attention contexts) to prevent alignment of speech features essential for convincing cloning. Furthermore, it introduces score amplification to actively induce backward pass-through from high-quality speech generation and additionally utilizes noise-based semantic corruption to disrupt the structural speech semantics captured by DMs, thereby degrading output quality. Extensive experiments demonstrate VoiceCloak's superior defense effectiveness. Voice samples are available at https://voice-cloak.github.io/VoiceCloak/ .

Takeaways, Limitations

Takeaways:
A novel approach to preventing exploitation of voice cloning based on diffusion models is presented.
Development of an effective defense framework that simultaneously achieves speaker identification obfuscation and voice quality degradation.
A novel defense strategy utilizing auditory perception principles and adversarial perturbation techniques is presented.
Experiments have proven VoiceCloak's superior performance.
Limitations:
Further research is needed to determine whether the effectiveness of the currently proposed VoiceCloak can be generalized to all types of diffusion model-based voice replication systems.
Performance evaluation in real-world environments and verification of resistance to various attack types are required.
Additional analysis is needed on the computational costs and performance degradation associated with VoiceCloak implementation.
Continuous monitoring and updated defense strategies are needed to address the emergence of new voice cloning techniques.
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