【摘要】 实现基于DVB标准的高清电视多通道音频解码.对标准中定义的子带合成滤波流程进行优化,并利用窗系数的对称性和位分配表的相似性,使运算量和存储量减少50%以上.通过使用实时操作系统DSP/BIOS对DSP进行开发,简化了开发流程和接口控制,使不同DSP间代码移植简单.该解码器也可应用于数字音频广播的信源解码.更多还原

【Abstract】 The paper describes a DVB based HDTV audio decoder used in multi-channel extension and presents an improved algorithm for the synthesis filter bank. It is found that when the symmetry of coefficient and the similarity of the allocation tables, computational amount and memory size are reduced by more than 50%. DSP/BIOS operating system simplifies developing various DSP systems. This decoder can also be used in Digital Audio Broadcasting systems.更多还原