low watermark 低水印 ; 低位线
Experimental results show that the watermark is imperceptible and the algorithm is robust to many attacks, such as MP3 compression, noise addition, requantization, low pass filtering and so on.
实验结果表明，水印系统对MP3压缩、噪声干扰、重量化、低通滤波攻击有一定的鲁棒性。
Audio watermarking that modulates DC level shift according to watermark has wonderful low pass and noise resistance performance.
根据水印调整直流电平偏移的音频水印算法具有很好的低通和抗噪性能。
The experimental results demonstrate that the watermark has the considerable perceptual invisibility and robustness, and the operation complexity is comparatively low in this scheme.
相关试验证明，本方案的水印稳健性和不可见性均达到了相当水平，运算复杂度也比较低。
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