Title :
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
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;
Conference_Titel :
Computer Science and Information Processing (CSIP), 2012 International Conference on
Conference_Location :
Xi´an, Shaanxi
Print_ISBN :
978-1-4673-1410-7
DOI :
10.1109/CSIP.2012.6308809
