完成对一段语音信号的短时分析，语音信号要包括清音、浊音和无声段，求其短时平均能量、短时平均过零率、短时自相关函数和短时功率谱；-Complete short-term analysis of a voice signal, the specific requirements: a voice signal to include the voiceless, voiced, and silent segments　2, find its short-term average energy, short-time average zero crossing rate, short-term autocorrelation function and short-term power spectrum　3, drawing, and the differences in the comparative analysis of three types of audio signals in the four short-term parameters　4, estimated using short-time autocorrelation voiced fundamental frequency　using matlab to write and draw