Speech Watermarking with Discrete Intermediate Representations

• URL: http://arxiv.org/abs/2412.13917v1
• Date: Wed, 18 Dec 2024 14:57:06 GMT
• Title: Speech Watermarking with Discrete Intermediate Representations
• Authors: Shengpeng Ji, Ziyue Jiang, Jialong Zuo, Minghui Fang, Yifu Chen, Tao Jin, Zhou Zhao,
• Abstract summary: We propose a novel speech watermarking framework that injects watermarks into the discrete intermediate representations of speech. DiscreteWM achieves state-of-the-art performance in robustness and imperceptibility, simultaneously. Our flexible frame-wise approach can serve as an efficient solution for both voice cloning detection and information hiding.
• Score: 45.892635912641836
• License:
• Abstract: Speech watermarking techniques can proactively mitigate the potential harmful consequences of instant voice cloning techniques. These techniques involve the insertion of signals into speech that are imperceptible to humans but can be detected by algorithms. Previous approaches typically embed watermark messages into continuous space. However, intuitively, embedding watermark information into robust discrete latent space can significantly improve the robustness of watermarking systems. In this paper, we propose DiscreteWM, a novel speech watermarking framework that injects watermarks into the discrete intermediate representations of speech. Specifically, we map speech into discrete latent space with a vector-quantized autoencoder and inject watermarks by changing the modular arithmetic relation of discrete IDs. To ensure the imperceptibility of watermarks, we also propose a manipulator model to select the candidate tokens for watermark embedding. Experimental results demonstrate that our framework achieves state-of-the-art performance in robustness and imperceptibility, simultaneously. Moreover, our flexible frame-wise approach can serve as an efficient solution for both voice cloning detection and information hiding. Additionally, DiscreteWM can encode 1 to 150 bits of watermark information within a 1-second speech clip, indicating its encoding capacity. Audio samples are available at https://DiscreteWM.github.io/discrete_wm.

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