中文说明： 语音信号的采集与处理，数字信号处理课设，供做算法研究人员参考，旋转机械二维全息谱计算，可直接计算得到多重分形谱,分析了该信号的时域、频域、倒谱，循环谱等,BP神经网络的整个训练过程。
English Description：
Speech signal acquisition and processing, digital signal processing courses, for our algorithm researchers can make a reference, rotating machinery two-dimensional holographic spectrum calculation, can be directly calculated to obtain the multifractal spectrum, analyzes the the signal in time domain and frequency domain, cepstrum, cyclic spectrum, BP neural network of the whole training process.