【摘要】 给出了MEPG-4AAC实时解码器在NIOSII平台的实现方案,介绍了MPEG-4AAC-LC解码算法及各关键模块优化算法。在完成实时解码要求下,结合NIOSII平台特性,对解码器在软件代码与处理器上进行优化。实验结果表明CPU时钟为80MHz时能达到实时解码要求。更多还原

【Abstract】 The implementation of MEPG-4 AAC real-time decoder based on NIOS II is presented.The brief decoder algorithm of MPEG-4 AAC and the techniques to optimize some key modules are introduced.To obtain the request of real-time decoder,the decoder on software code and processor with the features of NIOS II is optimized.The experimental results show that the decoder satisfies the real-time request.更多还原