基于小波变换的信号消噪

Signal denoising based on wavelet transformation

通过对噪声特性的分析并用小波的方法对信号进行消噪处理,结合去噪原理讨论和比较了实际应用中对小波基及阈值规则的合理选取问题。结果表明,这种方法在改善信噪比的同时,又保持相当高的时间分辨率,并且计算简单,有很好的去噪效果。

It tells the characters of noise and applysis to eliminate the noise principle, the rational selection issue concerning more suitable wavelet base , Combining with the denoising and the best threshold rule in actual application is discussed. The experiment shows that the method proposed not only improves the signal to noise ratio but also makes the time resolution remain high, and can suppress the noise effectively.