Chang, Wen-whei
Job title Professor
Name Chang, Wen-whei
Email wwchang@cc.nctu.edu.tw
Office Tel No. 03-5712121ext31826
laboratory Speech Communication Laboratory
Autobiography
Wen-Whei Chang received the B.S. degree in communication engineering from National Chiao Tung University, Hsinchu, Taiwan, R.O.C., in 1980, and the M.Eng. and Ph.D. degrees in electrical engineering from Texas A & M University, College Station, TX, in 1985 and 1989, respectively.

Since 1989, he has been a Faculty Member at the Communication Engineering Department of National Chiao Tung University, Taiwan, where he is currently professor. In the summer of 2000, he was on leave at the school of Electrical and Electronic Engineering, Nanyang Technological University, Singapore.
Year Paper Title
2016  Hung-Tsai Wu, Yi-Ting Wu, and Wen-Whei Chang, “Biometric Identification Using JPEG2000 Compressed ECG Signals,” IEICE Transactions on Information and Systems, vol.E98-D, no.10, pp.1829-1837, Oct. 2015.
2014 Hung-Tsai Wu, Chun-Feng Wu, and Wen-Whei Chang, “Iterative Symbol Decoding of Variable-Length Codes with Convolutional Codes,” submitted to J. Commun. Netw..

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Hung-Tsai Wu, Chun-Feng Wu, and Wen-Whei Chang, “Iterative Symbol Decoding of Variable-Length Codes with Convolutional Codes,” submitted to J. Commun. Netw..

2014

Chun-Feng Wu and Wen-Whei Chang, “Symbol-based iterative decoding of convolutionally encoded multiple descriptions,” IET Trans. Commun., vol.6, no.13, pp.1968-1875, Sept. 2012.

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Chun-Feng Wu and Wen-Whei Chang, “Symbol-based iterative decoding of convolutionally encoded multiple descriptions,” IET Trans. Commun., vol.6, no.13, pp.1968-1875, Sept. 2012.

2014 Chun-Feng Wu, Yuan-Chuan Chiang, and Wen-Whei Chang, “Joint Playout and FEC Control for Multi-Stream Voice over IP Networks,” J. Chin. Inst. Eng., vol.36, no.2, pp.224-235, 2013.

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Chun-Feng Wu, Yuan-Chuan Chiang, and Wen-Whei Chang, “Joint Playout and FEC Control for Multi-Stream Voice over IP Networks,” J. Chin. Inst. Eng., vol.36, no.2, pp.224-235, 2013.

2014 Chun-Feng Wu, Wen-Whei Chang, and Yuan-Chuan Chiang, Perceptual-Based Playout Mechanisms for Multi- Stream Voice over IP Networks,” IEICE Trans. Inf. Syst., vol.E94-D, no.5, pp. 1018-1025, May 2011.

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Chun-Feng Wu, Wen-Whei Chang, and Yuan-Chuan Chiang, Perceptual-Based Playout Mechanisms for Multi- Stream Voice over IP Networks,” IEICE Trans. Inf. Syst., vol.E94-D, no.5, pp. 1018-1025, May 2011.

2014 Hung-Tsai Wu, Wei-Ying Tsai, and Wen-Whei Chang, “Distributed Source Coding for Real-Time ECG Signal Monitoring,” IEICE Trans. Inf. Syst., vol.E97-D, no.8, pp. 2157-2165, Aug. 2014.

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Hung-Tsai Wu, Wei-Ying Tsai, and Wen-Whei Chang, “Distributed Source Coding for Real-Time ECG Signal Monitoring,” IEICE Trans. Inf. Syst., vol.E97-D, no.8, pp. 2157-2165, Aug. 2014.

2014 Chun-Feng Wu and Wen-Whei Chang, “Iterative Source-Channel Decoding Using Symbol-Level Extrinsic Information,” IEICE Trans. Commun., vol.E93-B, no.12, pp.3555-3563, Dec. 2010.

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Chun-Feng Wu and Wen-Whei Chang, “Iterative Source-Channel Decoding Using Symbol-Level Extrinsic Information,” IEICE Trans. Commun., vol.E93-B, no.12, pp.3555-3563, Dec. 2010.

2011 Cheng-Lung Lee and Wen-Whei Chang, "Channel-optimized error mitigation for distributed speech recognition over wireless networks" , Journal of the Chinese Institute of Engineers, Vol. 32, No. 1, pp. 45-51 , 2009年" target='_blank'> Cheng-Lung Lee and Wen-Whei Chang, "Channel-optimized error mitigation for distributed speech recognition over wireless networks" , Journal of the Chinese Institute of Engineers, Vol. 32, No. 1, pp. 45-51 , 2009年
2006 , 2006年02月" target='_blank'>C.L. Lee, W.W. Chang, and Y.C. Chiang, "Spectral and prosodic transformation of hearing-impaired Mandarin speech", 2006年02月
2006 , 2005年06月" target='_blank'>, "", 2005年06月
2003 , IEICE Trans. Information and systems, Vol. E86-D, No. 10, pp. 2218-2222, 2003年10月" target='_blank'>H. I. Hsu, W. W. Chang, X. Liu, and S. N. Koh, "Memory-Enhanced MMSE Decoding in Vector Quantization", IEICE Trans. Information and systems, Vol. E86-D, No. 10, pp. 2218-2222, 2003年10月
2002 , IEE Proceedings – Vision, Image and Signal Processing, Vol. 149, No. 3, pp. 162-167, 2002年06月" target='_blank'>W. W. Chang and H. I. Hsu, "Index Assignment in Vector Quantization for Channels with Memory", IEE Proceedings – Vision, Image and Signal Processing, Vol. 149, No. 3, pp. 162-167, 2002年06月
2002 , Speech Communication, Vol. 36, Issue 3-4, pp. 317-326, 2002年03月" target='_blank'>W.H.Tsai and W. W. Chang, "Discriminative Training of Gaussian Mixture Bigram Models with Application to Chinese Dialect Identification", Speech Communication, Vol. 36, Issue 3-4, pp. 317-326, 2002年03月
2001 , Electronics Letters, Vol. 37, No. 25, pp. 1556-1557,, 2001年12月" target='_blank'>W. H Tsai, W. W. Chang, and C. S. Huang, "Text-Independent Speaker Identification Based on Explicit Exploitation of Stochastic Characteristics of Test Utterance", Electronics Letters, Vol. 37, No. 25, pp. 1556-1557,, 2001年12月
2001 , IEEE Journal on Selected Areas in Communications: Wireless Communications Series, Vol. 19, No. 7, pp. 1365-1373, 2001年07月" target='_blank'>W. W. Chang, D. Y. Wang, and T. H. Tan, "Robust Vector Quantization for Wireless Channels,", IEEE Journal on Selected Areas in Communications: Wireless Communications Series, Vol. 19, No. 7, pp. 1365-1373, 2001年07月
2001 , Electronics Letters, Vol. 37, No. 10, pp. 2107-2112, 2001年05月" target='_blank'>W. W. Chang and H. I. Hsu, "Constrained VQ Codebook Design for Noisy Channels", Electronics Letters, Vol. 37, No. 10, pp. 2107-2112, 2001年05月
2000 , IEICE Trans. Information and Systems, Vol. E83-D, No. 12, 2000年12月" target='_blank'>W. H. Tsai and W. W. Chang, "Chinese Dialect Identification Based on Genetic Algorithm for Discriminative Training of Bigram Model", IEICE Trans. Information and Systems, Vol. E83-D, No. 12, 2000年12月
2000 , The Journal of the Acoustical Society of America, Vol. 108, No. 4, pp. 1906-1913, 2000年10月" target='_blank'>W. W. Chang and W. H. Tsai, "Chinese Dialect Identification Using Segmental and Prosodic Features", The Journal of the Acoustical Society of America, Vol. 108, No. 4, pp. 1906-1913, 2000年10月
2000 , IEICE Trans. Information and Systems, Vol. E83-D, No. 12, 2000年12月" target='_blank'>W. W. Chang and H. I. Hsu,, "The Automated Cryptanalysis of DFT-based Speech Scramblers", IEICE Trans. Information and Systems, Vol. E83-D, No. 12, 2000年12月
1998 , IEE Proceedings-Vision, Image and Signal Processing, Vol. 145, No.3, pp. 155-159, 1998年06月" target='_blank'>W. W. Chang and D. Y. Wang, "Perception-Based Quantization of LPC Excitation Parameters", IEE Proceedings-Vision, Image and Signal Processing, Vol. 145, No.3, pp. 155-159, 1998年06月
1998 , IEE Proceedings-Vision, Image and Signal Processing, Vol. 145, No. 6, pp. 379-383, 1998年12月" target='_blank'>W. W. Chang and D. Y. Wang, "Quality Enhancement of Sinusoidal Transform Vocoders", IEE Proceedings-Vision, Image and Signal Processing, Vol. 145, No. 6, pp. 379-383, 1998年12月
1998 , International Journal of Systems Science. Vol. 29, No. 6, pp. 579-585, 1998年12月" target='_blank'>T. H. Tan and W. W. Chang, "A Hybrid Strategy for Gilbert’s Channel Characterization Using Gradient and Annealing Techniques", International Journal of Systems Science. Vol. 29, No. 6, pp. 579-585, 1998年12月
1996 , Journal of the Chinese Institute of Electrical Engineering, Vol. 3, No. 4, pp. 307-314, 1996年11月" target='_blank'>W. W. Chang, J. Y. Wang, and T. H. Tan, "The Statistical Cryptanalysis of DFT-Based Speech Scramblers", Journal of the Chinese Institute of Electrical Engineering, Vol. 3, No. 4, pp. 307-314, 1996年11月
1996 , Electronics Letters, Vol. 32, No. 14, pp. 1256-1258, 1996年07月" target='_blank'>T. H. Tan and W. W. Chang, "Estimation of the Gilbert Model Parameters Using the Simulated Annealing Method", Electronics Letters, Vol. 32, No. 14, pp. 1256-1258, 1996年07月
1996 , IEEE Trans. on Speech and Audio Processing, Vol. 4, No. 2, pp. 124-132, 1996年03月" target='_blank'>W. W. Chang and C. T. Wang, "A Masking-Threshold-Adapted Weighting Filter for Excitation Search", IEEE Trans. on Speech and Audio Processing, Vol. 4, No. 2, pp. 124-132, 1996年03月
1991 , IEEE Trans. on Communications, Vol. 39, No. 9, pp.1351-1359, 1991年09月" target='_blank'>W. W. Chang and J. D. Gibson, "Smoothed DPCM Codes", IEEE Trans. on Communications, Vol. 39, No. 9, pp.1351-1359, 1991年09月
1991 , IEEE Trans. on Communications, Vol. 39, No. 6, pp. 963-974, 1991年06月" target='_blank'>J. D. Gibson and W. W. Chang, "Fractional Rate Multi-Tree Speech Coding", IEEE Trans. on Communications, Vol. 39, No. 6, pp. 963-974, 1991年06月
1990 , IEEE Trans. on Information Theory, Vol. 36, No. 5, pp. 1134-1139, 1990年09月" target='_blank'>W. W. Chang and J. D. Gibson, "Path Map Symbol Release Rules and the Exponential Metric Tree", IEEE Trans. on Information Theory, Vol. 36, No. 5, pp. 1134-1139, 1990年09月
1990 , IEEE Trans. on Acoustics, Speech, and Signal Processing, Vol. 38, No. 6, pp. 1053-1058, 1990年06月" target='_blank'>J. D. Gibson and W. W. Chang, "Objective and Subjective Optimization of APC System Performance,", IEEE Trans. on Acoustics, Speech, and Signal Processing, Vol. 38, No. 6, pp. 1053-1058, 1990年06月
Year Paper Title
2016 Yi-Ting Wu, Hung-Tsai Wu, and Wen-Whei Chang, “Compressed Domain ECG Biometric Identification using JPEG2000,” International Conference on Signal Processing and Multimedia Applications, Colmar, France, pp.5-13, July 2015.
2014 Ling-Ling Dai, Hung-Tsai Wu, Chun-Feng Wu and Wen-Whei Chang, “EXIT-Optimized Reversible Variable-Length Codes,” in Proc. 10th National Symp. Telecommun., Changhua, Taiwan, Nov. 2012.

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Ling-Ling Dai, Hung-Tsai Wu, Chun-Feng Wu and Wen-Whei Chang, “EXIT-Optimized Reversible Variable-Length Codes,” in Proc. 10th National Symp. Telecommun., Changhua, Taiwan, Nov. 2012.

2014 Hung-Tsai Wu, Wei-Ying Tsai, and Wen-Whei Chang, “Distributed Source Coding for Mobile ECG Signal Monitoring,” in Proc. 12th Int. Conf. ITS Telecommun., Taipei, Taiwan, Nov. 2012, pp.253-257.

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Hung-Tsai Wu, Wei-Ying Tsai, and Wen-Whei Chang, “Distributed Source Coding for Mobile ECG Signal Monitoring,” in Proc. 12th Int. Conf. ITS Telecommun., Taipei, Taiwan, Nov. 2012, pp.253-257.

2014 Hung-Tsai Wu, Chih-Hsien Lin, and Wen-Whei Chang, “Symbol-Based Joint Decoding of Convolutionally Encoded Variable-Length Codes,” in Proc. 12th Int. Conf. ITS Telecommun., Taipei, Taiwan, Nov. 2012, pp.145-148.

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Hung-Tsai Wu, Chih-Hsien Lin, and Wen-Whei Chang, “Symbol-Based Joint Decoding of Convolutionally Encoded Variable-Length Codes,” in Proc. 12th Int. Conf. ITS Telecommun., Taipei, Taiwan, Nov. 2012, pp.145-148.

2014 Hung-Tsai Wu, Wei-Ying Tsai, and Wen-Whei Chang, “Design of a Real-Time ECG Signal Monitoring System Using a Mobile Telephone,” in Proc. Int. Conf. Electr. Eng. Computer Sci., Tokyo, Japan, Mar. 2013, pp.292-300.

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Hung-Tsai Wu, Wei-Ying Tsai, and Wen-Whei Chang, “Design of a Real-Time ECG Signal Monitoring System Using a Mobile Telephone,” in Proc. Int. Conf. Electr. Eng. Computer Sci., Tokyo, Japan, Mar. 2013, pp.292-300.

2014 Yi-Ting Wu, Hung-Tsai Wu, and Wen-Whei Chang, “Fast Person Identification Using JPEG2000 Compressed ECG Data,” in Proc. 4th Int. Conf. Adv. Commun. Comput., Paris, France, July 2014, pp.144-148.

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Yi-Ting Wu, Hung-Tsai Wu, and Wen-Whei Chang, “Fast Person Identification Using JPEG2000 Compressed ECG Data,” in Proc. 4th Int. Conf. Adv. Commun. Comput., Paris, France, July 2014, pp.144-148.

2011 Yung-Le Chang, Chun-Feng Wu and Wen-Whei Chang, "Joint Playout and FEC Control for Enhancing Perceivedl Quality of Multi-Stream Voice communication", European Signal Processing Conference, Barcelona, Spain, 2011年8月
2011 Chun-Feng Wu, Tzu-Fan Hsu, and Wen-Whei Chang, "Iterative Symbol Decoding of Convolutionally-Encoded Variable-Length Codes", International conference on Information, Communications and Signal Processing, Singapore, 2011年12月
2011 Kuang-Yi Yen, Chun-Feng Wu and Wen-Whei Chang, "Iterative decoding of convolutionally encoded multiple descriptions" , Data Compression Conference, sonwbird, Utah, 2009年03月" target='_blank'>Kuang-Yi Yen, Chun-Feng Wu and Wen-Whei Chang, "Iterative decoding of convolutionally encoded multiple descriptions" , Data Compression Conference, sonwbird, Utah, 2009年03月
2011 Yung-Le Chang, Chun-Feng Wu and Wen-Whei Chang, "Joint Playout Buffer and FEC Adjustment for Multi-Stream Voice over IP Networks" , 2010 International Workshop on Information Communication Technology, Bangkok, Thailand, 2010年08月" target='_blank'> Yung-Le Chang, Chun-Feng Wu and Wen-Whei Chang, "Joint Playout Buffer and FEC Adjustment for Multi-Stream Voice over IP Networks" , 2010 International Workshop on Information Communication Technology, Bangkok, Thailand, 2010年08月
2011 Chun-Feng Wu, Yung-Le Chang and Wen-Whei Chang, "PERCEPTUAL-BASED PLAYOUT MECHANISMS FOR MULTI-STREAM VOICE OVER IP NETWORKS" , European Signal Processing Conference, 2009年08月" target='_blank'>Chun-Feng Wu, Yung-Le Chang and Wen-Whei Chang, "PERCEPTUAL-BASED PLAYOUT MECHANISMS FOR MULTI-STREAM VOICE OVER IP NETWORKS" , European Signal Processing Conference, 2009年08月
2011 Yen-Chang Pan, Chun-Feng Wu, and Wen-Whei Chang, "Iterative Source-Channel Decoding Using Symbol-Level Extrinsic Information" , International Conference on Information, Communications and Signal Processing, Macau, 2009年12月" target='_blank'>Yen-Chang Pan, Chun-Feng Wu, and Wen-Whei Chang, "Iterative Source-Channel Decoding Using Symbol-Level Extrinsic Information" , International Conference on Information, Communications and Signal Processing, Macau, 2009年12月
2008 , Interspeech '2007-Eurospeech, Antwerp, 2007年08月" target='_blank'>Chun-Feng Wu, Cheng-Lung Lee, and Wen-Whei Chang, "Perceptual-Based Playout Mechanisms for Multi-Stream Voice over IP", Interspeech '2007-Eurospeech, Antwerp, 2007年08月
2006 , 14th European Signal Processing Conference, 2006年09月" target='_blank'>Chun-Feng Wu, I-Te Lin, and Wen-Whei Chang, "ADAPTIVE PLAYOUT SCHEDULING FOR MULTI-STREAM VOICE OVER IP NETWORKS", 14th European Signal Processing Conference, 2006年09月
2006 , First International Conference on Communications and Networking in China (CHINACOM 2006), 2006年10月" target='_blank'>Chun-Feng Wu, and Wen-Whei Chang, "PERCEPTUAL OPTIMIZATION OF PLAYOUT BUFFER IN VOIP APPLICATIONS", First International Conference on Communications and Networking in China (CHINACOM 2006), 2006年10月
2006 , First International Conference on Communications and Networking in China (CHINACOM 2006), 2006年10月" target='_blank'>I-Te Lin, Chun-Feng Wu, Sin-Horng Chen, and Wen-Whei Chang, "MULTIPLE DESCRIPTION QUANTIZATION FOR RECOGNIZING VOICE OVER PACKET NETWORKS", First International Conference on Communications and Networking in China (CHINACOM 2006), 2006年10月
2006 , Interspeech '2005-Eurospeech, Lisbon, Portugal, 2005年09月" target='_blank'>C. L. Lee, and W. W. Chang, "Memory-enhanced MMSE-based channel error mitigation for distributed speech recognition", Interspeech '2005-Eurospeech, Lisbon, Portugal, 2005年09月
2006 , 8th International Conference on Spoken Language Processing, Jeju Island, Korea, 2004年10月" target='_blank'>C. L. Lee, W. W. Chang, and Y. C. Chiang, "Application of Voice Conversion to Hearing-Impaired Mandarin Speech Enhancement", 8th International Conference on Spoken Language Processing, Jeju Island, Korea, 2004年10月
0000 , International Symposium on Communications, Tao-Yuan, Taiwan, R.O.C, 2003年12月" target='_blank'>W. W. Chang, H. I. Hsu, and C. L. Lee, "Joint Source-Channel Decoding for VQ over Channels with Memory", International Symposium on Communications, Tao-Yuan, Taiwan, R.O.C, 2003年12月
0000 , 2003 European Conference on speech Communication and Technology, Geneva, Switzerland, 2003年09月" target='_blank'>C. L. Lee, Y. R. Yang, W. W. Chang, and Y. C. Chiang, "Enhancement of Hearing-Impaired Mandarin Speech", 2003 European Conference on speech Communication and Technology, Geneva, Switzerland, 2003年09月
0000 , National Symposium on Telecommunications, Nantou, Taiwan, R.O.C., , 2002年12月" target='_blank'>G. H. Lin, H. I. Hsu, and W. W. Chang, "Sequence MAP Decoding in Vector Quantization for Channels with Memory", National Symposium on Telecommunications, Nantou, Taiwan, R.O.C., , 2002年12月
0000 , IEEE Workshop on Speech Coding, Tsukuba, Japan, 2002年10月" target='_blank'>H. I. Hsu, W. W. Chang, Xiaobei Liu, and Soo Ngee Koh, "MMSE Decoding for Vector Quantization over Channels with Memory", IEEE Workshop on Speech Coding, Tsukuba, Japan, 2002年10月
0000 , 2001 International Symposium on Communications, Tainan, Taiwan, R.O.C., 2001年11月" target='_blank'>C. L. Lee, W. W. Chang, Y. C. Chu, and H. I. Hsu, "Voice Conversion for Enhancing the Hearing-Impaired Speech", 2001 International Symposium on Communications, Tainan, Taiwan, R.O.C., 2001年11月
0000 , 2001 European Conference on Speech Communication and Technology, Aalborg, Denmark, 2001年09月" target='_blank'>W. H. Tsai, W. W. Chang, Y. C. Chu, and C. S. Huang, "Explicit Exploitation of Stochastic Characteristics of Test Utterance for Text-independent Speaker Identification", 2001 European Conference on Speech Communication and Technology, Aalborg, Denmark, 2001年09月
0000 , 2001 European Conference on Speech Communication and Technology, Aalborg, Denmark,, 2001年09月" target='_blank'>W. H. Tsai, W. W. Chang, Y. C. Chu, and C. S. Huang, "Background Learning of Speaker Voices for Text-Independent Speaker Identification", 2001 European Conference on Speech Communication and Technology, Aalborg, Denmark,, 2001年09月
0000 , IEEE International Symposium on Information Theory, Washington D.C., U.S.A, 2001年06月" target='_blank'>W. W. Chang and H. I. Hsu, "Robust Vector Quantization for Channels with Memory", IEEE International Symposium on Information Theory, Washington D.C., U.S.A, 2001年06月
0000 , 2000 Asia Pacific Conference on Multimedia Technology and Applications, Kaohsiung, Taiwan, R.O.C., , 2000年12月" target='_blank'>H. I. Hsu, W. W. Chang, and C. J. Lee, "A Hadamard Framework for Constrained VQ Codebook Design", 2000 Asia Pacific Conference on Multimedia Technology and Applications, Kaohsiung, Taiwan, R.O.C., , 2000年12月
0000 , 2000 National Symposium on Telecommunications, Chungli, Taiwan, R.O.C, 2000年12月" target='_blank'>W. W. Chang and H. I. Hsu, "Cryptanalysis of DFT-Based Speech Scramblers Using Genetic Algorithms", 2000 National Symposium on Telecommunications, Chungli, Taiwan, R.O.C, 2000年12月
0000 , 2000 Workshop on Consumer Electronics, Taipei, Taiwan, R.O.C., 2000年10月" target='_blank'>H. I. Hsu and W. W. Chang, "Robust Vector Quantization Using the Hadamard Transform", 2000 Workshop on Consumer Electronics, Taipei, Taiwan, R.O.C., 2000年10月
0000 , International Conference on Spoken Language Processing, Beijing, China, 2000年10月" target='_blank'>W. H. Tsai, C. Che, and W. W. Chang, "Text-independent Speaker Identification Using Gaussian Mixture Bigram Models", International Conference on Spoken Language Processing, Beijing, China, 2000年10月
0000 , European Conference on Speech Communication and Technology, Budapest, Hungary, 1999年09月" target='_blank'>W. W. Chang, H. I. Hsu, and D. Y. Wang, "Robust Vector Quantization for Channels with Memory", European Conference on Speech Communication and Technology, Budapest, Hungary, 1999年09月
0000 , European Conference on Speech Communication and Technology, Budapest, Hungary, 1999年09月" target='_blank'>W. H. Tsai and W. W. Chang, "Chinese Dialect Identification Using An Acoustic-Phonotactic Model", European Conference on Speech Communication and Technology, Budapest, Hungary, 1999年09月
0000 , International Symposium on Chinese Spoken Language Processing, Singapore, 1998年12月" target='_blank'>W. H. Tsai, and W. W. Chang, "Automatic Identification of Chinese Dialects Spoken in Taiwan", International Symposium on Chinese Spoken Language Processing, Singapore, 1998年12月
0000 , IEEE International Symposium on Consumer Electronics, Taipei, Taiwan, R.O.C., , 1998年10月" target='_blank'>C. S. Wu, D. Y. Wang, and W. W. Chang, "Index Assignment in Vector Quantization for Noisy Channels", IEEE International Symposium on Consumer Electronics, Taipei, Taiwan, R.O.C., , 1998年10月
0000 , International Conference on Acoustics, Speech, and Signal Processing, Seattle, Washington, U.S.A., 1998年05月" target='_blank'>W. W. Chang and D. Y. Wang, "Techniques for Improving Sinusoidal Transform Vocoders", International Conference on Acoustics, Speech, and Signal Processing, Seattle, Washington, U.S.A., 1998年05月
0000 , International Symposium on Communication, Hsinchu, Taiwan, R.O.C, 1997年12月" target='_blank'>D. Y. Wang, and W. W. Chang, "Perceptual Coding of Sine-Wave Amplitude at Low Data Rates,", International Symposium on Communication, Hsinchu, Taiwan, R.O.C, 1997年12月
0000 , European Conference on Speech Communication and Technology, Rhodes, Greece, 1997年09月" target='_blank'>W. W. Chang, H. T. Chang, and W. Y. Meng, "Missing Packet Recovery Techniques for DM Coded Speech", European Conference on Speech Communication and Technology, Rhodes, Greece, 1997年09月
0000 , International Conference on Acoustics, Speech, and Signal Processing, Munich, Germany,, 1997年04月" target='_blank'>W. W. Chang, D. Y. Wang, and L. W. Wang, "Audio Coding Using Sinusoidal Excitation Representat", International Conference on Acoustics, Speech, and Signal Processing, Munich, Germany,, 1997年04月
0000 , Taiwan-Japan Joint Workshop on the Latest Development of Telecommunication Research, Hsinchu, Taiwan,, 1997年01月" target='_blank'>W. W. Chang, H. I. Hsu, and T. H. Tan, "Automated Cryptanalysis of Bandsplitter-Based Speech Scramblers", Taiwan-Japan Joint Workshop on the Latest Development of Telecommunication Research, Hsinchu, Taiwan,, 1997年01月
0000 , Taiwan-Japan Joint Workshop on the Latest Development of Telecommunication Research, Hsinchu, Taiwan, 1997年01月" target='_blank'>T. H. Tan and W. W. Chang, "A Binary Channel Characterization Using Genetic Algorithm", Taiwan-Japan Joint Workshop on the Latest Development of Telecommunication Research, Hsinchu, Taiwan, 1997年01月
0000 , IEEE Region Ten Conference, Perth, Western Australia, 1996年11月" target='_blank'>W. W. Chang and T. H. Tan, """Statistical Characterization of Error Sequences and Its Applications to Error Control", IEEE Region Ten Conference, Perth, Western Australia, 1996年11月
0000 , IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Taipei, Taiwan, ROC, 1996年10月" target='_blank'>T. H. Tan and W. W. Chang, "Estimation of Gilbert's Model Parameters Using the Simulated Annealing Method", IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Taipei, Taiwan, ROC, 1996年10月
0000 , International Symposium on Communications, Taipei, Taiwan, ROC,, 1996年12月" target='_blank'>T. H. Tan and W. W. Chang, "Statistical Characterization of Error Sequences and Its Applications to Speech Digitization", International Symposium on Communications, Taipei, Taiwan, ROC,, 1996年12月
0000 , International Symposium on Information Theory and Its applications, Sydney, Australia, 1995年11月" target='_blank'>W. W. Chang, J. Y. Wang, and T. H. Tan, "Statistical Cryptanalysis of DFT-Based Analog Speech Scramblers", International Symposium on Information Theory and Its applications, Sydney, Australia, 1995年11月
0000 , International Conference on Communication Systems, Singapore, 1994年11月" target='_blank'>W. W. Chang and L. W. Wang, "Multi-Sinusoid Excitation Model for Audio Coding", International Conference on Communication Systems, Singapore, 1994年11月
0000 , International Symposium on Communications, Hsinchu, Taiwan, R.O.C, 1993年12月" target='_blank'>W. W. Chang and K. Y. Lee, "Kalman Backward Adaptive Algorithm in Predictive Coding", International Symposium on Communications, Hsinchu, Taiwan, R.O.C, 1993年12月
0000 , IEEE Workshop on Speech Coding for Telecommunications, Quebec, Canada, 1993年10月" target='_blank'>W. W. Chang and C. T. Wang, "Audio Coding Using Masking-Threshold Adapted Perceptual Filter", IEEE Workshop on Speech Coding for Telecommunications, Quebec, Canada, 1993年10月
0000 , HD-Media Technology and Application Workshops, Taipei, Taiwan, R.O.C, 1993年10月" target='_blank'>W. W. Chang, S. H. Chen, Y. S. Lin, "Neural Network Mapping to Masking Threshold", HD-Media Technology and Application Workshops, Taipei, Taiwan, R.O.C, 1993年10月
0000 , National Symposium on Telecommunications, Chungli, Taiwan, R.O.C, 1992年12月" target='_blank'>J. Y. Wang, W. W. Chang, Y. K. Chen, and C. Y. Sun, "Fast CELP System with Shape/Gain Codebook", National Symposium on Telecommunications, Chungli, Taiwan, R.O.C, 1992年12月
0000 , HD-Media Technology and Application Workshop, Taipei, Taiwan, R.O.C, 1992年11月" target='_blank'>W. W. Chang, S. H. Chen, L. V. Wang, and Y. S. Lin, "Model-Classified CELP Coding of Wideband Audio", HD-Media Technology and Application Workshop, Taipei, Taiwan, R.O.C, 1992年11月
0000 , International Symposium on Information Theory and Its Applications, Singapore, 1992年11月" target='_blank'>W. W. Chang and J. Y. Liour, "Vector-Sum Codebook Structure for Variable Rate Speech Coding,", International Symposium on Information Theory and Its Applications, Singapore, 1992年11月
0000 , International Symposium on Communications, Tainan, Taiwan, R.O.C, 1991年12月" target='_blank'>W. W. Chang and J. H. Chen,, "Backward Adaptive Configurations for Low Delay Multi-Tree Coding,", International Symposium on Communications, Tainan, Taiwan, R.O.C, 1991年12月
0000 , IEEE Workshop on Speech Coding for Telecommunications, Whistler, Canada, , 1991年09月" target='_blank'>W. W. Chang and C. Y. Yang, "Kalman Filtering of Colored Quantization Noise in DPCM Systems", IEEE Workshop on Speech Coding for Telecommunications, Whistler, Canada, , 1991年09月
0000 , International Conference on Acoustics, Speech, and Signal Processing, Albuquerque, U.S.A, 1990年04月" target='_blank'>J. D. Gibson, Y. C. Cheong, H. C. Woo, and W. W. Chang, "A Comparison of Backward Adaptive Prediction Algorithms in Low Delay Speech Coders,", International Conference on Acoustics, Speech, and Signal Processing, Albuquerque, U.S.A, 1990年04月
0000 , International Symposium on Information Theory, San Diego, U.S.A., , 1990年01月" target='_blank'>J. D. Gibson, T. R. Fischer, W. W. Chang, """Source Coder Structural Constraints and Information Patterns", International Symposium on Information Theory, San Diego, U.S.A., , 1990年01月
0000 , International Symposium on Information Theory, San Diego, U.S.A., 1990年01月" target='_blank'>W. W. Chang and J. D. Gibson, "Smoothed DPCM Codes", International Symposium on Information Theory, San Diego, U.S.A., 1990年01月
0000 , IEEE Global Telecommunications Conference and Exhibition, Dallas, U.S.A, 1989年11月" target='_blank'>J. D. Gibson and W. W. Chang, "Fractional Rate Multi-Tree Speech Coding", IEEE Global Telecommunications Conference and Exhibition, Dallas, U.S.A, 1989年11月
0000 , IEEE Workshop on Speech Coding for Telecommunications, Vancouver, Canada, 1989年09月" target='_blank'>J. D. Gibson, Y. C. Cheong, H. C. Woo, and W. W. Chang, "Backward Adaptive Prediction Algorithms in Multi-Tree Speech Coders", IEEE Workshop on Speech Coding for Telecommunications, Vancouver, Canada, 1989年09月
0000 , Twenty-Sixth Annual Allerton Conference on Communication, Control, and Computing, Illinois, U.S.A, 1989年06月" target='_blank'>J. D. Gibson, T. R. Fischer, and W. W. Chang, "Information Patterns and Source Coding", Twenty-Sixth Annual Allerton Conference on Communication, Control, and Computing, Illinois, U.S.A, 1989年06月
0000 , International Conference on Advances in Communications and Control Systems, Baton Rouge, U.S.A., 1988年10月" target='_blank'>W. W. Chang and J. D. Gibson, "Path Map Symbol Release Algorithms and the Exponential Tree", International Conference on Advances in Communications and Control Systems, Baton Rouge, U.S.A., 1988年10月
0000 , 31st Midwest Symposium on Circuits and Systems, St. Louis, U.S.A., 1988年08月" target='_blank'>W. W. Chang and J. D. Gibson, "A Comparison of Adaptive Code Generators for Tree Coding of Speech", 31st Midwest Symposium on Circuits and Systems, St. Louis, U.S.A., 1988年08月
Project Category Year Project Title Participator Job Title Period Unit
Research Projects 2013 Chang, Wen-whei 2013.08 ~ 2016.07
Research Projects 2012 Chang, Wen-whei 2012.08 ~ 2013.07
Research Projects 2011 Chang, Wen-whei 2011.07 ~ 2012.08
Research Projects 2010 Chang, Wen-whei 2010.07 ~ 2011.08
Research Projects 2009 Chang, Wen-whei 2009.08 ~ 2010.07
Research Projects 2009 Chang, Wen-whei 2009.08 ~ 2010.07
Research Projects 2008 Qos control for wideband speech communication over mobile networks Chang, Wen-whei 2008.08 ~ 2009.07 NSC
Research Projects 2007 Channel error mitigation for distributed speech recognition over GSM network 2007.08 ~ 2008.07 NSC
Research Projects 2007 Qos control for wideband speech communication over mobile networks 2007.08 ~ 2008.07
Research Projects 2006 2006.08 ~ 2007.07
Research Projects 2006 2006.08 ~ 2007.07
Research Projects 2006 2006.08 ~ 2007.07
Research Projects 2006 2006.08 ~ 2007.07
Research Projects 2005 2005.09 ~ 2006.08
Research Projects 2005 2005.08 ~ 2006.08
Research Projects 2005 2005.08 ~ 2006.07
Research Projects 2004 2004.08 ~ 2005.07
Research Projects 2004 2004.08 ~ 2005.07
Research Projects 2004 2004.08 ~ 2005.07
Research Projects 2004 2004.08 ~ 2005.09
Research Projects 92 2003.08 ~ 2004.07
Research Projects 92 2003.08 ~ 2004.07
Research Projects 91 2002.08 ~ 2003.07
Research Projects 91 2002.08 ~ 2003.07
Research Projects 90 2001.08 ~ 2002.07
Research Projects 90 2001.08 ~ 2002.07
Year Lab Title Location
Speech Communication Laboratory ED 812A
Country School Name Department Degree Duration
USA Texas A&M University  Electrical Engineering  Ph.D.  1985.09 ~ 1989.05
USA Texas A&M University  Electrical Engineering  Master  1983.09 ~ 1985.05
ROC  National Chiao-Tung University  Communication Engineering  Bachelor  1976.09 ~ 1980.05
Organization Title Department Job Title Duration
2004.06 ~ 2004.11
National Chiao-Tung University  Department of Communication Engineering  Professor  2001.08 ~ Up to today
Nanyang Technological University (Singapore)  School of Electronics and Electrical Engineering  Tan Chin Tuan Exchange Fellow 2001.07 ~ 2001.09
2000.01 ~ 2001.06
1999.07 ~ 2000.06
National Chiao-Tung University  Department of Communication Engineering  Associate Professor  1989.08 ~ 2001.08
1985.09 ~ 1988.08
Honor Category Year Award Name Awarding Unit
Internal Honor 2005
Internal Honor 2003
External Honor 2002 Tan Chin Tuan Exchange Fellowship NanYang Technological University
Internal Honor 1999
External Honor 1988 BNR TCSP Graduate Fellowship Texas A&M University