Software optimizations of MPEG2/4 audio decoder on 16-bit, fix-point DSP
The low complexity (LC) profile of MPEG-4 advanced audio coding (AAC) has become standard in mobile audio communication. The main design constraint while used in real time application is power efficiency, low memory, and MIPS requirements. The paper describes optimization techniques to achieve these objectives. It involves algorithmic changes in various tools of the decoder and processor specific optimizations.