g7221是ITU的标准提案，主要应用了mlt变换技术，矢量量化技术和哈夫曼编码技术。中有g7221标准的中英文文档说明及实现的c源代码。-g7221 is the ITU standard proposal, the main application mlt transform vector quantization and Huffman coding techniques. In g7221 standards in English document describes the imple