比较两个不同的倒频谱分析方法的一个有限的时间框架的言论,即基于fft算法的传统方法(与框架展开复杂的倒频谱),和一个分析方法基于求解有限阶分子多项式的根的倒频谱和直接计算多项式根的位置。-This MATLAB exercise compares two different methods of cepstrum analysis of a finite duration fr a me of speech, namely the conventional method based on FFTs (with fr a me unwrapping for the complex cepstrum), and an analytical method based on solving for the roots of a finite order numerator polynomial and directly computing the cepstrum　the locations of the polynomial roots.