各位大牛:
有个小波的问题,一直未能解决,请高手指点。
下面这幅图片是从一篇文献中看到的,不知这种图片怎么才能得到?
文献中介绍的比较简单,如下:
Figure 3 shows the results obtained with the wavelet transform of the pressure in Fig. 2(a) which has been processed by a high pass filter with cut-off frequency fc=4kHz and normalized as standard deviation σ=1.0.
另外,使用的小波基是复数小波。
图片中下面是原始信号,上面是小波变换的曲线。