Title :
Scalar coprocessors for accelerating the G723.1 and G729A speech coders
Author :
Chouliaras, Vassilios A. ; Nunez, Jose
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Loughborough, UK
Abstract :
We investigate two scalar coprocessors for accelerating the ITU-T G723.1 and G729A speech coders. Architecture space exploration indicates up to 72% reduction in the total number of instructions executed through the introduction of custom instructions and small changes to the C reference code. The accelerators are designed to be attached to a configurable embedded RISC CPU where they make use of the host register file and load/store infrastructure.
Keywords :
coprocessors; data compression; embedded systems; reduced instruction set computing; speech coding; vocoders; C reference code; ITU-T G723.1 speech coder; ITU-T G729A speech coder; RISC CPU; custom instructions; embedded systems; load/store infrastructure; register file; scalar coprocessors; speech compression; Acceleration; Coprocessors; Filters; Internet telephony; Reduced instruction set computing; Registers; Signal synthesis; Speech analysis; Speech coding; Speech synthesis;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2003.1233807
