科研之友
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摘要
In the practical experiment of the electrical signal in C02 arc welding process, it's an important step to eliminate the disturb of noise. The wavelet packet filtering method can effectively distinguish the signal from noise. Under Windows circumstance and by use of Visual C++ 6.0 program language, the wavelet packet filtering algorithm with soft threshold operation is realized. It has been proved by the experiments that the wavelet packet filtering based on soft threshold is a better de-noising method, and it can improve the effect of extracting signal characteristics.
- 出版日期2003-4
- 单位华南理工大学
