本論文主要研究內容是於系統晶片之ARM端實現G.723.1編解碼器。由於G.723.1編解碼器計算量過大，所以將原始碼最佳化並改寫組合語言，接著使用快速演算法加速固定碼簿搜尋，利用G.723.1編解碼器於ARM端完成編解碼。

In this thesis, the implementation of G.723.1 Codec on ARM at SoC platform is our main research. Since the G.723.1 codec need a great deal of calculation, the source code have to be optimized and rewritten in assembly code. Then, fast algorithm that accelerates the fixed-codebook search is applied. Let the G.723.1 Codec achieve encoding and decoding at ARM side.

[1] Draft Recommendation G.723.1, Dual rate Speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s
[2] TMS320DM320 CPU and Peripherals Volume-1, Texas Instruments, 2003.
[3] TMS320DM320 CPU and Peripherals Volume-1-2, Texas Instruments, 2003.
[4] TMS320DM320 CPU and Peripherals Volume-1-3, Texas Instruments, 2003.
[5] TMS320DM320 CPU and Peripherals Volume-2, Texas Instruments, 2003.
[6] TMS320DM320 DM Chip Support Library API Reference Guide, Texas Instruments, 2003.
[7] Anshuman Tripathi,Shireesh Verma,Daniel D.Gajski, “G.729E Algorithm Optimization for ARM926EJ-S Processor”, Technical Report CECS-03-09 March 21,2003.
[8] K. Krishna, V.L.N. Murty, K.R. Ramakrishnan, “Vector quantization of excitation gains in speech coding”, Signal Processing 81 (2001) 203-209
[9] Balázs Kővesi, Samir Saoudi, Jean Marc Boucher, Gábor Horváth, Real time vector quantization of LSP parameters, Speech Communication 29 (1999) 39-47
[10] 3GPP TS 26.090 V5.0.0 (2002-06),Adaptive Multi-Rate (AMR) speech codec;
[11] Sung-Kyo Jung, Kyung-Tae Kim, Young-Cheol Park, and Hong-Goo Kang, A Fast Adaptive-Codebook Search Algorithm for G.723.1 Speech Coder, IEEE SIGNAL PROCESSING LETTERS, VOL. 12, NO. 1, JANUARY 2005
[12] K. Krishna, V.L.N. Murty, K.R. Ramakrishnan, “Vector quantization of excitation gains in speech coding”, Signal Processing 81 (2001) 203-209
[13] 林裕彬, ITU-T G.729和G.723.1語音編碼器之快速演算法, 碩士論文--國立成功大學電機工程研究所, 民91
[14] 陳郁利,MPEG-4進階音響解碼器於系統晶片之實現 , 碩士論文--國立成功大學電機工程研究所, 民93
[15] S. M. Tsai, J. C. Wang, J. F. Yang, and J. F. Wang, "Efficient Coding Translation of GSM and G.729 Speech Coders across Mobile and IP Networks," IEICE Trans. Information and Systems, vol. E87-D, no.2, pp.444-452, February 2004.
[16] M. L. Wang and J. F. Yang, “A Generalized Candidate Scheme of Stochastic Codebook Search for Scalable CELP Coders,” IEE Proceedings: Vision, Image and Signal Processing, 2004.
[17] F. K. Chen, J. F. Yang and Y. L. Yan,” Candidate Scheme for Fast ACELP Search,” IEE Pro.-Vis. Image and Signal Process., vol. 149, no. 1, February, pp. 10-16, 2002.
[18] S.M. Tsai and J. F. Yang “ Efficient Algebraic Code-Excited Linear Predictive Codebook Search,” IEE Proceedings - Vision, Image, and Signal Processing, vol. 153, issue 6, pp. 761-768, December 2006.