Real-time implementation and optimization of ITU-T´s G.729 speech codec running at 8 kbits/sec using CS-ACELP on TM-1000 VLIW DSP CPU

Author

Sheikh, Noor M. ; Siddiqui, Kashif Israr ; Khan, Muneeb Wahad ; Tajammul, Sheikh Fraz ; Ashraf, Mazin

Author_Institution

Dept. of Electr. Eng., Univ. of Eng. & Technol., Lahore, Pakistan

fYear

2001

fDate

2001

Firstpage

23

Lastpage

27

Abstract

During the history of digital audio compression there have been many different attempts at reducing the bit rate without reducing the equality in the same grade. Today we have many modem compression algorithms that achieve very high compression rations without a perceivable loss in quality. The main objective of our work is to implement a state of art speech-coding algorithm CS-ACELP using ITU-T´s G.729 recommendation and optimize it for real-time implementation on a very long instruction word (VLIW) digital signal processor (DSP) central processing unit (CPU).

Keywords

circuit optimisation; digital signal processing chips; linear predictive coding; real-time systems; speech codecs; CS-ACELP; ITU-T G.729 speech codec; TM-1000 VLIW DSP CPU; bit rate; conjugate-structure algebraic-code-excited linear-prediction; digital audio compression; optimization; real-time implementation; speech-coding algorithm; very long instruction word digital signal processor central processing unit; Art; Audio compression; Bit rate; Central Processing Unit; Compression algorithms; Digital signal processing; History; Modems; Speech codecs; VLIW;

fLanguage

English

Publisher

ieee

Conference_Titel

Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century. Proceedings. IEEE International

Print_ISBN

0-7803-7406-1

Type

conf

DOI

10.1109/INMIC.2001.995309

Filename

995309