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Proposed Modification in ETSI GSM 06.10 Full Rate Speech Codec for High Rate Data Hiding and Its Overall Performance Analysis

Ninad S. Bhatt, Yogeshwar P. Kosta

Abstract


Paper proposes modifications in grid selection strategy in Regular Pulse Excitation module of ETSI GSM 06.10 Full Rate 13 kbps coder which offer overall reduction in 1.8 kbps (36bits / each 20ms frame) bit-rate that in turn can be utilized for high bit rate data hiding. So, the suggested modifications in above coder allow joint data hiding and speech coding. In this spared bit rate of 1.8 kbps, the steganographic data like text, audio and image can be embedded in class Ib (as per GSM Full Rate Channel coding standards) in order to provide error protection and then reliably transmitted. The obtained results for objective and subjective analysis reveal that there is a marginal reduction in perceived speech quality for the case of steganographic FR coder when compared with recovered speech quality in the case of standard GSM FR coder. Apart from hiding data, the proposed modifications in GSM FR is useful for overall reduction in codec bit-rate and provides room for better error concealment at channel coding. As a potential application, the hidden bits may be used for Band width Extension (BWE) purpose.

Keywords


ETSI, GSM, RPE-LTP Coder, Speech Coding, Steganography

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References


D. Malkovic, Speech Coding Methods in Mobile Radio Communication Systems, 17th International Conference on Applied Electromagnetics and Communications, Oct-2003, Croatia.

P. Bassia, I. Pitas, and N. Nikolaidis, Robust audio watermarking in the time domain, IEEE Trans. Multimedia, vol. 3, no. 2, Jun. 2001; 232–241,.

D. Kirovski and H. Malvar, Spread-spectrum watermarking of audio signals, IEEE Trans. Signal Process., vol. 51, no. 4, Apr. 2003; 1020–1033.

B. Chen and G. W. Wornell, Quantization index modulation: A class of provably good methods for digital watermarking and information embedding, IEEE Trans. Inform. Theory, vol. 47, no. 4, May 2001; 1423–1443.

B. Scharf, Critical bands, Foundations of Modern Auditory Theory. New York: Academic, 1970.

X. Dong, M. F. Bocko, and Z. Ignjatovic, Data hiding via phase manipulation of audio signals, in Proc. 2004 ICASSP, May 2004, vol. 5; 377–380.

W. Bender, D. Gruhl, N. Morimoto, and A. Lu, Techniques for data hiding, IBM Syst. J., vol. 35, no. 3,4; 313–336, 1996.

A. Shahbazi, E. Soltanmohammadi, A. H. Rezaie, A. Sayadiyan, and S. Mosayyebpour Content Dependent Data Hiding on GSM Full Rate Encoded Speech, 2010 International Conference on Signal Acquisition and Processing.

Yi Hu, Philipos C. Loizou, Evaluation of Objective Quality Measures for Speech Enhancement, IEEE Transactions on Audio, Speech and Language processing, Vol. 16, No. 1, Jan. 2008

A. Rix, J. Beerends, M. Hollier, and A. Hekstra, Perceptual evaluation of speech quality (PESQ)-A new method for speech quality assessment of telephone networks and codecs, in Proc. IEEE Int. Conf. Acoust., Speech, Signal Process., 2001, vol. 2;749–752.

B. Geiser and P. Vary, High Rate Data Hiding in ACELP Speech Codecs, in Proc. Of ICASSP-2008

T. H. Falk and W. Chan, Single-ended speech quality measurement using machine learning methods, IEEE Trans. Audio, Speech, Lang.Process., vol. 14, no. 6, Nov. 2006; 1935–1947.

J. Salmela and V. Mattila, New intrusive method for the objective quality evaluation of acoustic noise suppression in mobile communications, in Proc. 116th Audio Eng. Soc. Conv., 2004, preprint 6145.

B. Grundlehner, J. Lecocq, R. Balan, and J. Rosca, Performance assessment method for speech enhancement systems, in Proc. 1st Annu. IEEE BENELUX/DSP Valley Signal Process. Symp., 2005.

Koh Jun-Li Christabel, Sabu Emmanuel, Mohan S. Kankanhalli, Quality-Aware GSM Speech Watermarking, in Proc. of ISCAS, Seattle, WA, May 2008.

ITU-T Recommendation P.862, Perceptual Evaluation of Speech Quality (PESQ): An Objective Method for End-to-End Speech Quality Assessment of Narrow-Band Telephone Networks and Speech Codecs, February 2001; 1-18

Hu Licai, Wang Shuozhong, Information Hiding Based on GSM Full Rate Speech Coding, in Proc. of WiCOM , Wuhan, Sept. 2006.

P. Vary and B. Geiser, Steganographic wideband telephony using narrowband speech codecs, in Conference Record of Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, Nov. 2007, invited talk.

B. Geiser and P. Vary, Backwards compatible wideband telephony in mobile networks: CELP watermarking and bandwidth extension, Proc. of ICASSP, Honolulu, Hawai’i, USA, Apr. 2007.

ETSI, Digital Cellular Telecommunications System (Phase 2+), Full Rate Speech, Transcoding, (GSM 06.10 version 7.0.0 Release 1998), pp.10-59

Koh Jun-Li Christabel, Sabu Emmanuel, Mohan S. Kankanhalli, Quality-Aware GSM Speech Watermarking, in Proc. of ISCAS, Seattle, WA, May 2008.

P. Moulin and R. Koetter, Data-hiding codes, Proceedings of the IEEE, vol. 93, no. 12;, Dec. 2005; 2083–2126.

Q. Cheng and J. Sorensen, Spread spectrum signaling for speech watermarking, Proc. of ICASSP, Salt Lake City, UT, USA, May 2001.

A. Sagi and D. Malah, Data embedding in speech signals using perceptual masking, Proc. of EUSIPCO, Vienna, Austria, Sept. 2004.

M. Celik, G. Sharma, and A. M. Tekalp, Pitch and duration modification for speech watermarking, Proc. Of ICASSP, Philadelphia, PA, USA, Mar. 2005.

S. Chen and H. Leung, Concurrent data transmission through analog speech channel using data hiding, IEEE Signal Processing Letters, vol. 12, no. 8 , Aug. 2005; 581–584.

B. Geiser, P. Jax, and P. Vary, Artificial bandwidth extension of speech supported by watermark transmitted side information, Proc. of INTERSPEECH, Lisbon, Portugal, Sept.2005.

K. Hofbauer and G. Kubin, High-rate data embedding in unvoiced speech, in Proc. of INTERSPEECH, Pittsburgh, PA, USA, Sept. 2006.

Z.-M. Lu, B. Yan, and S.-H. Sun, Watermarking combined with CELP speech coding for authentication, IEICE Trans. On Inf. and Systems, vol. E88-D, no.2, 2005; 330–334.

N. Chétry and M. Davies, Embedding side information into a speech codec residual, Proc. of EUSIPCO, Florence, Italy, Sept. 2006.

ETSI, Channel coding ( GSM 05.03 version 8.9.0 (2005-01), release 1999); 12-19 & 98

ITU-T P.835, Subjective test methodology for evaluating speech communication systems that include noise suppression algorithm, ITU-T Recommendation; 835, 2003.

N. Bhatt and Y. Kosta, Proposed modifications in ETSI GSM 06.10 full rate speech codec and its overall evaluation of performance using MATLAB, Int. J Speech Technol, Springer

R. C. de Lamare and A. Alcaim, strategies to improve the performance of very low bit rate speech coders and application to a variable rate 1.2kbps codec, IEE proc. Vis. Image Signal Process., Vol. 152, No. 1, Feb. 2005


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