用c实现的提取信号的双谱，进而可用于信号特征提取和识别-With c realize the dual spectrum signal extraction, and thus can be used for signal feature extraction and recognition

双谱间接法的matlab实现，在用信号的特征提取上，可以直接调用。-Bispectral indirect method matlab realize, in a signal feature extraction, it can be called directly.

基于kaiser窗的双谱线插值FFT谐波分析，音频信号通过LM386放大，课程设计时编写的matlab程序代码。- Dual-line interpolation FFT harmonic analysis kaiser windows, LM386 audio signal amplification, Course designed to prepare the matlab program code.

随机调制信号下的模拟ppm，LDPC码的完整的编译码，基于kaiser窗的双谱线插值FFT谐波分析。- Random ppm modulated analog signal under Complete codec LDPC code, Dual-line interpolation FFT harmonic analysis kaiser windows.