[1] Wang Shikui, Tang Yibin, You Hongyan, et al. Frame erasure concealment in wideband speech codingbased on large hidden Markov model [J]. Journal of Southeast University (English Edition), 2009, 25 (2): 152-155. [doi:10.3969/j.issn.1003-7985.2009.02.002]

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Frame erasure concealment in wideband speech codingbased on large hidden Markov model()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 2

Page:

152-155

Research Field:

Computer Science and Engineering

Publishing date:

2009-06-30

Info

Title:

Frame erasure concealment in wideband speech codingbased on large hidden Markov model

Author(s):

Wang Shikui¹;  2;  Tang Yibin¹;  You Hongyan¹;  Wu Zhenyang¹

¹School of Information Science and Engineering, Southeast University, Nanjing 210096, China
²School of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, China

Keywords:

frame erasure concealment;  wideband speech;  large hidden Markov model;  immittance spectral frequency(ISF)parameter

PACS:

TP391

DOI:

10.3969/j.issn.1003-7985.2009.02.002

Abstract:

Frame erasure concealment is studied to solve the problem of rapid speech quality reduction due to the loss of speech parameters during speech transmission. A large hidden Markov model is applied to model the immittance spectral frequency(ISF)parameters in AMR-WB codec to optimally estimate the lost ISFs based on the minimum mean square error(MMSE)rule. The estimated ISFs are weighted with the ones of their previous neighbors to smooth the speech, resulting in the actual concealed ISF vectors. They are used instead of the lost ISFs in the speech synthesis on the receiver. Comparison is made between the speech concealed by this algorithm and by Annex I of G.722.2 specification, and simulation shows that the proposed concealment algorithm can lead to better performance in terms of frequency-weighted spectral distortion and signal-to-noise ratio compared to the baseline method, with an increase of 2.41 dB in signal-to-noise ratio(SNR)and a reduction of 0.885 dB in frequency-weighted spectral distortion.

References:

[1] Ehsan M S, Kubin G.Frame change ratio:a measure to mod-el short-time stationarity of speech[C]//Innovations in Information Technology.Dubai, United Arab Emirates, 2006:1-5.
[2] Vaillancourt T, Jelinek M, Salami R, et al.Efficient frame erasure concealment in predictive speech codecs using glottal pulse resynchronization [C]//IEEE International Conference on Acoustics, Speech and Signal Processing. Honolulu, HI, USA, 2007:1113-1116.
[3] Thyssen J, Zopf R, Chen Juin-Hwey, et al.A candidate for the ITU-T G.722 packet loss concealment standard[C]//IEEE International Conference on Speech and Signal Processing. Honolulu, HI, USA, 2007:549-552.
[4] Telecommunication Standardization Sector of ITU.ITU-T recommendation G.722.2 wideband coding of speech at around 16 kbit/s using adaptive multi-rate wideband(AMR-WB)[S].2003.
[5] Telecommunication Standardization Sector of ITU.Wideband coding of speech at around 16 kbit/s using adaptive multi-rate wideband(AMR-WB).Appendix I:Error concealment of erroneous or lost frames[S].2002.
[6] Rabiner L, Juang B H.Fundamentals of speech recognition[M].New Jersey:Prentice-Hall, 1993:321-389.
[7] Rodbro C A, Murthi M N, Andersen S V, et al.Hidden Markov model-based packet loss concealment for voice over IP[J].IEEE Transactions on Audio, Speech, and Language Processing, 2006, 14(5):1609-1623.
[8] Pepper D J, Clements M A.Phonemic recognition using a large hidden Markov model[J].IEEE Transactions on Signal Processing, 1992, 40(6):1590-1595.
[9] Pepper D J, Clements M A.On the phonetic structure of a large hidden Markov model [C]//International Conference on Acoustics, Speech, and Signal Processing.Toronto, Ont, Canada, 1991:465-468.
[10] Collura J S, McCree A, Tremain T E.Perceptually based distortion measurements for spectrum quantization[C]//IEEE Workshop on Speech Coding for Telecommunications.1995:49-50.
[11] Gilbert E N.Capacity of a burst-noise channel[J].Ben Syst Tech Ⅰ, 1960, 39:1253-1266.

Memo

Memo:

Biographies: Wang Shikui(1970—), male, graduate;Wu Zhenyang(corresponding author), male, professor, zhenyang@seu.edu.cn.
Foundation items: The Science Foundation of Southeast University(No.XJ0704268), the Natural Science Foundation of the Education Department of Anhui Province(No.KJ2007B088).
Citation: Wang Shikui, Tang Yibin, You Hongyan, et al.Frame erasure concealment in wideband speech coding based on large hidden Markov model[J].Journal of Southeast University(English Edition), 2009, 25(2):152-155.

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