一种应用于MPEG-2AAC格型自适应滤波器的FPGA实现  

An Implementation of Lattice Adaptive Filter Applying in MPEG-2 AAC on FPGA

作　　者：王昱洁[1] 刘同怀[1] 郭立[1] 刘烃海[1] 

机构地区：[1]中国科学技术大学电子科学与技术系,安徽合肥230026

出　　处：《微电子学与计算机》2004年第11期110-112,152,共4页Microelectronics & Computer

摘　　要：本文给出了格型自适应滤波器在AAC中的应用,提出了一种AAC解码器中预测模块的FPGA实现方案,该方案根据时序图进行VHDL语言的描述,并采用流水线结构和运算单元分时复用,可以有效地提高运算速度,满足实时性的要求。This paper describes an application of the lattice adaptive filter in advanced audio coding (AAC), and presents an implementation of the predictor of AAC decoder on FPGA. In this implementation, we describe the circuit in VHDL according to the timing graph, and adopt the pipelined structure and time-sharing computing cells. In this way, we can efficiently improve the speed of operation and satisfy the requirement of real time.

关 键 词：格型自适应滤波器 AAC 预测器 FPGA 

分 类 号：TN402[电子电信—微电子学与固体电子学]