The paper puts the emphasis on the signal de-noising and calculation time-difference for collected sound wave and vibration signals. At the same time, the Wavelet Transform is applied to embed and detect watermark.
本论文主要讨论了用小波对声波／振动信号去噪和求时差，同时，也用小波实现了数字水印的嵌入和检测。
参考来源 - 小波变换在信号处理中的应用——声振信号分析和数字水印技术的实现·2,447,543篇论文数据，部分数据来源于NoteExpress
Splitting method and implicit time difference scheme are used in the numerical calculation.
数值计算中采用了分解算法及隐式时间差分方案。
Programming of trial difference calculation could be realized, so time of calculation could be reduced effectively and parameter related could be adjusted conveniently.
通过图表数据函数化可以使试差计算程序化，因而有效减少试差计算时间，还能方便地调节有关参数。
It is proved via the verification calculation that the HOH result from NGFM is consistent with that from the fine mesh difference method, but with much less computation time.
经验算，NGFM下高阶谐波计算取得与细网差分法下一致的结果，但计算时间大大缩短。
应用推荐