任意图片文件压缩到JPEG格式和解压，压缩率高且失真度高-Any picture file compression JPEG formats and decompression, compression rate and distortion are both high

心音信号的DCT域变换压缩编码，LLoyld最佳量化与霍夫曼编码，利用心电R波进行分帧，在不到1 左右失真度的情况下达到了6.0以上的压缩比-Heart sound signals on DCT transform coding, LLoyld optimal quantization and Huffman coding, the use of ECG R wave sub-frame, less than about 1 in the case of distortion to achie

利用SOM神经网络设计矢量量化的码书，结果优于传统的LBG方法，失真度较小。-SOM neural network design use vector quantization codebook, the result is better than traditional methods LBG, distortion is small.