Title :
Implementation of SB-ADPCM codec on a single TMS320C25 signal processor
Author :
Mäkeläinen, Kimmo
Author_Institution :
Commun. Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
An implementation of the subband adaptive differential pulse code modulation speech codec defined in CCITT recommendation G.722 is based on the TM320C25 signal processor, and the program is written in its corresponding assembly language. The time optimization essential for a single-processor codec program is covered. Two aspects are presented: the implementation of basic operations used in the recommendation, and the structuring of the block definition of the coding algorithm to a sequential assembly language program
Keywords :
codecs; digital signal processing chips; pulse-code modulation; speech analysis and processing; CCITT recommendation G.722; TM320C25 signal processor; assembly language; basic operations; block definition; single-processor codec program; subband ADPCM speech codec; subband adaptive differential pulse code modulation; time optimization; Arithmetic; Assembly; Codecs; Frequency; Hardware; Signal processing; Signal processing algorithms; Telephony; Timing; Writing;
Conference_Titel :
Communications, 1990. ICC '90, Including Supercomm Technical Sessions. SUPERCOMM/ICC '90. Conference Record., IEEE International Conference on
Conference_Location :
Atlanta, GA
DOI :
10.1109/ICC.1990.117278
