CAJ | 학술논문

对于音频水印技术来说，同步攻击一直是一个具有挑战性的难题。本文提出了一个基于对数坐标的鲁棒性音频水印算法。修改变换到对数坐标系上的中低频对应的傅里叶幅度系数。实验结果表明此算法不仅能抵抗常规信号处理，还能抵抗随机剪切和时间尺度变换攻击。
대우음빈수인기술래설，동보공격일직시일개구유도전성적난제。본문제출료일개기우대수좌표적로봉성음빈수인산법。수개변환도대수좌표계상적중저빈대응적부리협폭도계수。실험결과표명차산법불부능저항상규신호처리，환능저항수궤전절화시간척도변환공격。
For audio watermarking technique, the synchronization attack has always been a challenging problem. This paper pro-posed a robust audio watermarking algorithm based on log coordinate. We modified Fourier amplitude coef cients on low and middle frequency, which are compressed to log coordinates. Experimental results indicate that the algorithm we proposed could resist not only common signal processing, but also random cropping keeping the tones of time scale modification.