different matlab code for convolution, discrete fourier transform, finite impulse response, inverse DFT, descimator

对正弦信号的傅里叶变换及能量的求解，MATLAB具体的代码 -Fourier transform and solving the energy sinusoidal signal, MATLAB specific code

FFT /快速傅里叶变换的基本原理，使用Visual DSP++软件实现FFT的1024位运算，并附有matlab代码。-FFT/Fast Fourier transform of the basic principles of using Visual DSP++ software FFT of 1024 operations, together with matlab code.