CAJ | 학술논문

采用一片美国TI公司的数字信号处理芯片TMS320C31实现了MPEG-2音频Layer-1、2实时压缩编解码器.为了达到实时的目的,对ISO/IEC 11172-3建议的子带分析方案提出了一种新的快速算法.采用该快速算法,可以使子带分析的运算量降低5倍.仿真实验表明,采用快速算法后,用一片TMS320C31可以达到实时编码.
채용일편미국TI공사적수자신호처리심편TMS320C31실현료MPEG-2음빈Layer-1、2실시압축편해마기.위료체도실시적목적,대ISO/IEC 11172-3건의적자대분석방안제출료일충신적쾌속산법.채용해쾌속산법,가이사자대분석적운산량강저5배.방진실험표명,채용쾌속산법후,용일편TMS320C31가이체도실시편마.
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.