【摘要】 该文提出一种基于音频帧幅度修改的水印算法。将音频信号划分为若干个包含相同采样点的帧,每帧分为3个包含相同采样点的段,对各选定段的幅度绝对值的平均值进行修改,通过比较各段平均值幅度差异来嵌入水印。实验表明,该算法在保证良好音频质量的同时对MP3压缩,低通滤波,重采样,同步攻击等信号攻击具有很强的鲁棒性。更多还原

【Abstract】 a new audio watermark algorithm based on audio frame is proposed.The audio signal has been divided into several frames including the same samples,and the frame has been divided into three sections including the same samples.The proposed algorithm modifies the selected section’s average of absolute amplitude(AOAA)and scales the amplitude in a group manner,so that the algorithm exploits difference to represent watermark stream.The tests reveal that the proposed watermarking scheme maintains high audio quality and is simultaneously highly robust to different kinds of attacks.更多还原