中文说明：
信号与系统基础知识包括连续信号与模型、离散信号与模型；
常用信号变换包括Z变换、Chirp Z变换、FFT变换、DCT变换和Hilbert变换等；
离散系统结构包括IIR、FIR和Lattice结构；
IIR滤波器设计包括模拟和数字低通、高通、带通与带阻滤波器设计，以及基于冲激响应不变法和双线性Z变换法的IlR滤波器设计等；
FIR滤波器设计包括基于窗函数、频率抽样法和切比雪大逼近法的FIR滤波器设计；
平稳信号分析包括经典功率谱估计、基于参数模型的功率谱估计和基于非参数模型的功率谱估计；
非平稳信号分析包括STFT变换、Gabor展开、Wigner-Ville分布与Choi-Williams分布；
非高斯信号分析包括基于非参数法的双谱估计、基于参数模型的双谱估计，以及双谱估计的应用；信号处理的GUI实现包括滤波器设计与分析的FDATool工具和滤波器设计与信号分析的SPTool工具。
English Description：
Basic knowledge of signal and system includes continuous signal and model, discrete signal and model; < / P > < p > common signal transformation includes Z transformation and chirp transformation The design of IIR filter includes analog and digital low-pass, high pass, band-pass and band stop filters, and the design of ILR filter based on impulse response invariance and bilinear Z-transform. < / P > < p > the design of FIR filter includes window function and frequency extraction The analysis of stationary signal includes classical power spectrum estimation, power spectrum estimation based on parametric model and power spectrum estimation based on nonparametric model. < / P > < p > the analysis of non-stationary signal includes STFT transform, Gabor expansion, Wigner Ville distribution and Choi Williams distribution. < / P > < p > the analysis of non Gaussian signal includes power spectrum estimation based on nonparametric method The GUI implementation of signal processing includes FDATool tool for filter design and analysis and sptool tool for filter design and signal analysis.