以C语言为模板，详细讲解了数字信号处理中的课中处理过程，处理函数的C语言实现。包括随机数生成，更重FFT算法的C实现，卷积和滤波器。-The C language as a template, gave a detailed course in digital signal processing in the process, the handler of the C language. Including random number generation, more importantly, the C implementation FFT algorithm, convolution, and filters.