高清电视音频解码算法研究与实现

Research and Realization of HDTV Audio Decode Algorithm

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.