AMR speech codec realization and optimization based on Tmscx55 DSP

Author

Zhao, Yan ; Zhang, Yuyan ; Jing, Mang ; Zhao, Junhui

Author_Institution

Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2012

fDate

24-26 Aug. 2012

Firstpage

120

Lastpage

123

Abstract

Timeliness is the key requirement when AMR codec is realized in DSP. In this paper, the code optimization is implemented for the AMR codec when realizing on the TI^® TMS320VC5509 DSP hardware platform. In order to improve the code efficiency, comprehensive assembly instructions are rewritten firstly after the comprehensive analysis on the AMR algorithm, and then hybrid coding is implemented to combine the advantage of C programming and DSP-based assembly language programming. The test on DSP verifies that the AMR codec realization and code optimization enhance the code efficiency and achieve satisfactory results.

Keywords

adaptive codes; assembly language; digital signal processing chips; optimisation; speech codecs; speech coding; AMR speech codec realization; C programming; DSP-based assembly language programming; TI TMS320VC5509 DSP hardware platform; adaptive multirate speech coding; code optimization; comprehensive assembly instructions; hybrid coding; Codecs; Educational institutions; Multiaccess communication; Optimization; Programming; Random access memory; C programming; DSP; assembly language programming; code optimization; timeliness;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Science and Information Processing (CSIP), 2012 International Conference on

Conference_Location

Xi´an, Shaanxi

Print_ISBN

978-1-4673-1410-7

Type

conf

DOI

10.1109/CSIP.2012.6308809

Filename

6308809