A real-time implementation of the MPEG-2 audio encoder

A real-time implementation of the MPEG-2 audio encoding system is presented. The system is made up of eleven highly-parallel DSP processors, which are distributed in five slave engines and one master unit. Each slave engine consists of two processors which perform the subband analysis and psychoacoustic modeling, respectively. The master board comprising a single processor performs the bit allocation, quantization and bit-stream formatting for up to five channels. To utilize the full capacity of the system, the job scheduling is optimized and distributed to each slave board after analyzing the flow of the MPEG-2 algorithm and the amount of computation at each stage.