Abstract
In this paper, we propose a new application-specific RISC processor architecture to overcome the performance bottleneck of traditional RISC processor executing complex speech decoding application such as, what we mostly concern about, ITU-T G.729 decoder. By introducing the enhanced hardware components into ARM v4 processor architecture, the new application-specific instructions are accomplished and the performance of this new architecture is about 52% improvement than original ARM v4 processor architecture. © 2006 IEEE.