高清电视音频解码算法研究与实现  

Research and Realization of HDTV Audio Decode Algorithm

作　　者：张季[1] 徐元欣[1] 方健[1] 张瑾[1] 王匡[1] 

机构地区：[1]浙江大学信息与电子工程系,浙江杭州310027

出　　处：《电视技术》2004年第8期78-81,共4页Video Engineering

摘　　要：针对DVB的高清电视音频解码中的子带综合滤波算法进行了改进,使得运算量和存储量都下降了一半以上,采用改进算法的解码器在完成C语言仿真的基础上,进行了浮点程序的定点化改造,以实现基于定点DSP的实时解码,此解码器对高清电视信源解码等众多方面有着广泛的应用。To reduce the computational amount and memory size of the HDTV(for DVB) audio decoder, the algorithm of sub-band synthesis filter has been optimized in this paper. Based on C-language simulation of the optimized decoder, fixed-point code has been converted from the floating-point code. This decoder can be realized in real-time on a fixed-point DSP, and it has a wide range of applications in HDTV source decoding and etc.

关 键 词：高清晰度电视 MPEG-2标准 音频解码 子带综合滤波器组 定点 

分 类 号：TN941.5[电子电信—信号与信息处理]