(中國船船重工集團公司第七一〇研究所,湖北省 宜昌市 443003)
摘要:設計實現了基于DM642的G.729A語音解碼系統,著重利用存儲器系統優化、軟件流水優化、線性匯編優化和內聯函數優化降低了代碼的運算復雜度并減小系統延遲,提高語音解碼系統的整體性能。經測評,優化后的解碼器能夠實現多媒體語音和數據的同步實時傳輸。
關鍵詞:G.729A;語音解碼;DM642;優化
中圖分類號: 文獻標識碼:A 文章編號:
The Design and optimization of G.729A Voice Decode System Based on DM642
Xia Qing,Ma Wuju
(710 Research and Development Institute, CSIC, Yichang 443003,China.
Linkman: Xia Qing, E-mail:xq.xia@yahoo.com.cn)
Abstract:G.729A voice decode system based on DM642 is designed and implemented, storage system optimization, soft flow optimization, linear assembler optimization and Intrinsic function optimization are used to decrease the calculation complexity and reduce the system time of delay. The overall performance of the voice decode system is improved obviously. By testing and comparison, the optimized voice decode system can transfer the voice and data lively and synchronously.
Key words:G.729A ;speech decode;DM642;optimization
參考文獻 (References)
李昌立,吳善培.數字語音-語音編碼實用教程[M]北京:人民郵電出版社,2004
Richard V.C.,Candace A.K.Speech and Language Processing for Next-Millennium Communication Services[J].Proc.of IEEE.2000,88(8):1314~1337
舒華芙等.IP電話技術及其應用[M].北京:人民郵電出版社,1999
王炳錫.語音編碼[M].西安:西安電子科技大學出版社,2003
SEED-VPM642用戶指南 (Rev.B) [G].北京合眾達電子技術有限責任公司,2005
TMS320C6000 Programmer's Guide(Rev.L) [G],SPRU198G.Texas Instrument.August 2002
Texas Instruments Incorporated.TMS320C6000系列DSP編程工具與指南[M].田黎育等譯.北京:清華大學出版社,2006
TMS320C6000 Optimizing C Compiler User's Guide (Rev.L) [G], SPRU187L.Texas Instrument.May 2004
作者簡介:
夏青,女,1985年3月出生,2010年于北京航空航天大學獲得碩士學位,現就職于中國船舶重工集團公司第七一〇研究所。