ANALYSIS OF MP3 CODING ARITHMETIC
MA You-ming · Journal of Jiamusi University · 2005
The ISO MPEG-1 standard describes the implementation of three compression schemes called layer 1, layer 2 and layer 3. The layer 1 scheme is the simplest to implementation but its efficiency is not as good as the other two layers. The layer3 scheme, commonly known as MP3, provides the best performance at low bit rates and has become widely popular for the transmission of encoded audio file (MP3's) through the Internet. However, it is also the most difficult one to implement. This paper is designed to introduce the coding scheme for the MPEG-I layer3 standard. In this paper we analyze the key techniques adopted by MP3 coding arithmetic such as subband coding, psychoacoustic models and Huffman coding particularly and find out the approach to implement them. Furthermore, a feasible advice of improving the encoding scheme is proposed to make the code more efficient.