程序利用快速傅立叶变换及逆变换模拟了脉冲在光纤中传输时三阶色散对脉冲形状的影响-procedures using fast Fourier transform and inverse transform simulation of the pulse in fiber transmission third-order dispersion on the shape of the pulse the impact

经过语音信号短时谱分析，掌握短时傅里叶变换的定义，熟悉窗口形状、窗长对短时傅里叶变换的影响。 -After short-term spectrum of speech signal analysis, to grasp the definition of the short time Fourier transform, the familiar shape of the window, the window length on the short time Fourier transfor

The sine wave is important in physics because it retains its wave shape when added to another sine wave of the same frequency and arbitrary phase and magnitude. It is the only periodic waveform that has this property. This property leads to its impor