随便写写

最近看RichardG.Lyons的时学到的向量长度估算技巧，Alpha-max-plus-beta-min algorithm，还挺好用。

参考An introduction to signal processing for speech，极好的入门引导，摘录+补充。This chapter aims to give a transparent and intuitive introduction to the basic ideas of the Fourier domain and filtering, and connect...

参考：双二阶滤波器本文中的例子和代码放在GithubFirst，什么是双二阶滤波器？wiki上是这么说的：二阶、递归、线性，含有两个极点和两个零点，“双二阶”的名字来源于它的传递函数是两个二次多项式的比值。In signal processing, a digital biquad filter is a second order recursive linear filter, con...

参考：The Scientist and Engineer’s Guide to Digital Signal Processing Multimedia Signal Processing: Theory and Applications in Speech, Music and CommunicationsClassification欲知细节，先识大体，看看数字滤波器都有哪些种类吧。...