MP3文件以一帧为一个编码单元，各帧编码数据是独立的。为了清晰而准确地描述mp3文件格式，下面采用位流语法描述，这种语法格式与c语言近似，易于理解，且描述清晰-An MP3 file to a coding unit, the encoded data frame is independent. In order to clear and accurate descr iption of mp3 file format, the following descr iption of the use of bit-stream syntax, the syntax and language similar to c, easy to understand and describe a clear