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FFTRECT
- 快速傅里叶变换的C程序实现，实现了矩形脉冲的FFT，并画出了其图形
FFTshow
- 可产生矩形脉冲和正弦信号，矩形脉冲的脉宽可以改变，正弦信号则可以改变频率和时宽-Can produce rectangular pulse and sinusoidal signal, the rectangular pulse width can be changed, sinusoidal signal can be changed when the frequency and width
fft
- 周期信号的傅立叶变换、单脉冲和周期信号的傅立叶变换的比较、周期矩形脉冲与单矩形脉冲的关系-this is a ppt for fft .its good for people who wants to know fft well
hanglao
- 包括面积、周长、矩形度、伸长度，采用的是脉冲对消法，基于分段非线性权重值的Pso算法。- Including the area, perimeter, rectangular, elongation, It uses a pulse of consumer law, Based on piecewise nonlinear weight value Pso algorithm.
CH11
- 重点分析信号在时域中为矩形脉冲具有sinc函数的特点，以此为基础，探讨小波和傅里叶之间的变换关系，既是小波与傅里叶分析基础,也是图像处理方面的资料-Key analytical signal in the time domain characteristic of a rectangular pulse having a sinc function as a basis to explore the relationship between wavelet and Fourier transfo