提出SyncGuard音频水印方案，可抵抗时间错位攻击。
SyncGuard: Robust Audio Watermarking Capable of Countering Desynchronization Attacks
- 帧级广播嵌入策略，支持任意长度音频且无需定位
- 引入精心设计的失真层，显著提升抗攻击鲁棒性
- 结合膨胀残差与门控结构，有效捕捉多尺度时频特征
音频水印广泛应用于版权保护与来源追踪，但音频信号固有特性导致水印定位和抗时间错位攻击仍是重大挑战。本文提出一种基于学习的同步防御方案SyncGuard。设计帧级广播嵌入策略，在任意长度音频中嵌入水印，提升时间独立性，避免提取时需定位。为增强鲁棒性，引入精心设计的失真层。同时采用膨胀残差块与膨胀门控块结合，有效捕捉多分辨率时频特征。大量实验表明，SyncGuard能高效处理变长音频片段，在多种攻击下优于现有最优方法，且保持优异听觉质量。
原文摘要 · Abstract (English)
Audio watermarking has been widely applied in copyright protection and source tracing. However, due to the inherent characteristics of audio signals, watermark localization and resistance to desynchronization attacks remain significant challenges. In this paper, we propose a learning-based scheme named SyncGuard to address these challenges. Specifically, we design a frame-wise broadcast embedding strategy to embed the watermark in arbitrary-length audio, enhancing time-independence and eliminating the need for localization during watermark extraction. To further enhance robustness, we introduce a meticulously designed distortion layer. Additionally, we employ dilated residual blocks in conjunction with dilated gated blocks to effectively capture multi-resolution time-frequency features. Extensive experimental results show that SyncGuard efficiently handles variable-length audio segments, outperforms state-of-the-art methods in robustness against various attacks, and delivers superior auditory quality.
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