make parity matrix in matlab

将声音文件在时间轴上分割成几段，分别将段的秩序及某些段内的秩序颠倒，从而实现了对声音文件的加密。首先，先读取一个声音信号，对信号做1024点FFT变换，取完点之后，分成四个向量，四个向量组成一个矩阵，再对每一个向量进行转置，再重新整合，从而就实现了回密的过程。-Sound files on the timeline will be divided into paragraphs, each paragraph of the order and reversed the order of some

matlab----矩阵计算方案及方法例程-the matlab---- matrix calculation program and method routines

用于进行矩阵逆变换的加密的matlab测试代码，用于进行数据库代理加密的方案。-Encrypted matlab test code for matrix inverse transform is used for database encryption scheme agency.