Title :
Two polyphase filter architectures for MPEG audio
Author :
Ling, Nam ; Shih, Chen-Wei
Author_Institution :
Dept. of Comput. Eng., Santa Clara Univ., CA, USA
Abstract :
Polyphase subband filtering is a computational-intensive operation in MPEG audio coding. In this paper, we present two fast architectures by using a fast IDCT algorithm with and without recursive formula for polyphase analysis subband filtering. Our basic approach is to use only one adder/subtracter and one multiplier, but each has its own data bus, and a process controller is used to control the overall processing. We compare our design by using timing constraints, memory size, circuit complexities, and the number of operations. Low cost adder/subtracters and multipliers in VLSI implementation can be designed for real-time applications
Keywords :
adders; audio coding; audio signals; discrete cosine transforms; multiplying circuits; timing; IDCT algorithm; MPEG audio; VLSI implementation; adder/subtracters; audio coding; circuit complexities; computational-intensive operation; memory size; multipliers; overall processing; polyphase filter architectures; real-time applications; recursive formula; subband filtering; timing constraints; Adders; Algorithm design and analysis; Audio coding; Complexity theory; Computer architecture; Filtering algorithms; Filters; Memory management; Process control; Timing;
Conference_Titel :
Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on
Conference_Location :
Sacramento, CA
Print_ISBN :
0-7803-3694-1
DOI :
10.1109/MWSCAS.1997.662210
