A Fast Algorithm for Real-Time MPEG-2 Audio Coder

A real-time MPEG-2 layer 1&2 audio coder realized on one TMS320C31 is developed. In order to realize the coder real-time, a new fast algorithms for MPEG-2 audio sub-band analysis filter is presented. The algorithm can reduce calculation work of sub-band analysis to 1/5 of that processed by algorithm ISO/IEC 11172-3 recommended. Software and hardware simulation of the algorithm is made. Through a simulator the programs are loaded on a TMS320C31. The MPEG audio coder is realized in real time.