基于CW5521的AC3音频解码器实现与接口设计

his article first described the character of the very popular used international audio standard Dolby AC3。Then introduced the chip which is used in this experiment：multimedia processing DSP chip CW5521 of ChipWrights corporation，and stress the character and structure of it．Second，described the frame structure and decoder process of Dolby AC3 , next ,according to the character of the chip used, validate it by C program. Then partition it to three part: open audio file, decode audio，close audio file. Then optimized it, designed the universal interface and testing program。Experiment show，the decoder can finish over realtime decoding successfully on multimedia processing DSP chip CW5521。