一个语音的倒频谱图的分析，有源代码，有图，加一个DCT压缩代码-A voice analysis inverted spectrum, source code, a map, plus a DCT compression code

该文档详细描述了关于AAC音频的Huffman编码部分的两种隐写算法：码字符号位和码字空间映射。文档描述了算法的原理以及嵌入提取过程，并配有流程图以便参考。- This document describes in detail the two hidden About AAC audio Huffman coding portion of the write algorithms: sign bit codewords and codeword space map. Document des

MAP ADAPTATION IN MATLAB

该代码可做快速傅里叶转换以及离散傅里叶转换以及绘制三维时频图(The code can do fast Fourier transform, as well as discrete Fourier transform, and to draw three-dimensional time-frequency map)