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AMR声码器研究及其基于C6000的多通道实现 被引量：1

Study on AMR vocoder and its multi-channel implementation based on TMS320 C6000
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摘要 对WCDMA的语音编码标准———AMR声码器中的算法进行了分析和研究,重点探讨了各个算法的特点及其理论依据,并实现了基于TMS320C6000系列芯片的多通道AMR声码器。仿真结果与3GPP提供的结果满足比特精确要求;实时处理的非正式主观测试表明,合成语音质量优于GSM的RPE-LTP的语音质量。 This paper presents the speech coding algorithms in the WCDMA-AMR vocoder with emphasis on their novel characteristics, theoretical foundations and its multi-channel implementation based on the TMS320C6000. Simulation results is identical,bit by bit,to the test sequences provided by 3GPP. Quality of the synthetic speech of the real time hardware is superior to that of the RPE-LTP by some informal listening tests.
作者 任晓燕 陈新富
机构地区 空军工程大学电讯工程学院
出处 《电声技术》 北大核心 2003年第2期51-56,共6页 Audio Engineering
关键词 C6000 AMR声码器 码激励线性预测 第三代移动通信 源控速率 语音编码 相位弥散 AMR vocoder code-excited linear prediction 3G mobile communication source controlled rate voice activity detector error concealment phase dispersion
分类号 TN912.32 [电子电信—通信与信息系统]
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参考文献10

  • 1[1]Griffin D W.Lim J S. Multiband Excitation Vocoder. IEEE Trans. ASSP, 1988,36(8): 1 223-1 235.
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  • 6[6]3GPP TS 26.090. AMR Speech Codec; Transcoding Functions.
  • 7[7]3GPP TS 26.091. AMR Speech Codec; Error Concealment of Lost Frames.
  • 8[8]3GPP TS 26.092. AMR Speech Codec; Comfort Noise Aspects.
  • 9[9]3GPP TS 26.094. AMR Speech Codec; Voice Activity Detector(VAD).
  • 10[10]Texas Instruments(TI)TMS320C6000 PeripheralsReferenee Guide. April, 1999.

同被引文献10

  • 1王珏.计算机高速缓冲存储器体系结构分析[J].航空计算技术,2006,36(3):29-33. 被引量：3
  • 23GPP. ETSI EN 301 704 V7. 1. 1-1999. Digital cellular telecommunications system (Phase 2 + ) ; Adaptive Multi-Rate (AMR) speech transcoding ( GSM 06.90 version 7.1. 1 Release 1998) [ S ]. France : ETSI, 1999.
  • 3RAHNEMA M. UMTS network planning, optimization, andinter-operation with GSM [ M ]. [ S. 1. ] : Wiley-IEEE Press ,2008:205-213.
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  • 5ASADUZZAMAN A, MAHGOUB I. Evaluation of applicationspecific multiprocessor mobile system [ C ]//2004 International Symposium on Performance Evaluation of Computer and Telecommunication Systems. California, USA: IEEE Press,2004:751-758.
  • 6SHI Hao. RISC + SIMD = DSP? [ C ]//IEEE International Conference of Acoustic, Speech, and Signal Processing. Istanbul, Turkey : IEEE Press,2000:3211-3214.
  • 7EL-KOUATLY R, E1-RAMLY R H. A new low bit rate low delay Algebraic CELP (ACELP) coder [ C ] // Seventeenth National Radio Science Conference. Minufiya, Egypt : [ s. n. ] ,2000 : C8/1-C8/8.
  • 8FU-KUN C, BO-KAI S, YUE-DAR J. Complexity scalability design in global pulse replacement algorithm for ACELP speech codecs [ C ]//16th International Conference on Digital Signal Processing. Santorini -Hellas:[s. n. ] ,2009:1 -4.
  • 9黄桃,李小文,刘琳.基于定点DSP的AMR语音编解码器的实时实现[J].通信技术,2007,40(11):382-384. 被引量：2
  • 10吴恒,汪纪锋.AMR语音编码技术在多环境下的性能分析及优化[J].电声技术,2009,33(11):77-80. 被引量：1

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电声技术
2003年 第2期

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