张晓志、胡聿贤两位同志最近撰文介绍的局部加密傅里叶谱分析 ZOOMFT 方法是具有一定实用意义的频谱分析方法。但笔者认为在文章[1]中对有些问题的交代还不够明确、妥切,特提出来,请张、胡两位作者和广大读者指正。(一)两位作者在文章[1]的三,ZOOMFT 算法的基本原理部分,把 ZOOMFT 算法的基 The local encryption Fourier analysis ZOOMFT method recently introduced by the two comrades Zhang Xiaozhi and Hu Yuxian is a spectral analysis method with practical significance. However, I believe that in the article [1], the explanations of some issues are not clear enough and they are appropriate. Specially, I would like to ask the authors and readers of Zhang and Hu to correct me. (a) Two authors in the article [1] three, the basic principles of the ZOOMFT algorithm, based on the ZOOMFT algorithm