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.