基于LSB的时域音频水印改进算法的软件实现

Software implementation of LSB-based audio watermarking's improved schemes

针对基于LSB的时域音频基本水印算法易于实现但鲁棒性较差的问题,对其进行改进.改进后的LSB算法在嵌入水印时提高了LSB位(嵌入位)的位置,并通过改变相邻位的值和噪声整形的手段保证了水印的透明性.利用Matlab仿真软件对不同的攻击进行仿真,从比特错误率报告可以看出,改进算法有很好的鲁棒性.

The audio watermarking scheme of LSB was improved aiming at its easy operation and its lower robustness.The improved LSB watermarking scheme heightens the LSB layers and ensures the limpidity through the change of the contiguous codes and noise shaping.From the wrong bit rate reports achieved by emulation software,the new LSB watermarking scheme has the better robustness.