用c实现卷积算法，里面有详细说明，大家一起交流，-With c realize convolution algorithm, which is described in detail, to share with everyone, thank you

零延时卷积算法实现，基于fft变换。Efficient Convolution Without Latency by William G. Gardner-It is well known that a block FFT implementation of convolution is vastly more efficient than the direct form FIR filter. Unfortunately, block processing incurs signifi