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Sofia BEN JEBARA

  • Grade : Professeur
  • Spécialité : Télécommunications
  • Téléphone à l’institut + numéro de poste : 70 240 971
  • Email universitaire ou personnel : Sofia BEN JEBARA.jpg

 

Cours enseignés à Sup'Com

  • Théorie du signal (INDP1)
  • Traitement du signal (INDP1, Formation doctorale)
  • Traitement de la parole (INDP2) dominante Signaux et images (SIMAG)
  • Traitements audio (INDP3, option Services et communications multimédia "SERCOM")
  • Communications audio (INDP3, option Services et communications multimédia "SERCOM")
  • Compression multimédia (mastère en télécommunications)

 

Expérience

  • Juillet 2008-Mars 2009, directrice de l’Ecole Docorale en Sciences et Technologies de l’Information et de la Communication (ED STIC) à Sup'Com.
  • Janvier 2005-Juin 2008, membre fondateur et responsable de l’unité de recherche en Techniques de Communications Haut-débit et TRaitements Audio (TECHTRA) à Sup'Com.
  • Avril 2006-Mars 2009, coordinatrice de la formation doctorale en technologies de l’information et de la communication à Sup'Com.
  • Avril 2006-Mai 2009, responsable du mastère en télécommunications à Sup'Com.

 

Formation


  • Ingénieur de l’Ecole Nationale d’Ingénieurs de Tunis
  • Doctorat en Génie Electrique de l’Ecole Nationale d’Ingénieurs de Tunis
  • Habilitation universitaire de l’Université Carthage

 

Thèmes de recherche

  • Filtrage adaptatif
  • Annulation d’écho acoustique
  • Débruitage de la parole
  • Débruitage du signal EMG
  • Classification paramétrique de la parole saine et pathologique
  • Analyse et amélioration de la parole oesophagienne

 

Groupes de recherches

Membre du laboratoire de recherche COSIM (Communications Signaux et Images) et responsable du projet "Traitement du signal pour applications médicales"

 

Publications

 

[1] Ben Aicha, S. Ben Jebara, ”Speech perceptual quality measures separating speech distortion and additive noise degradations,” accepted for publication at EURASIP speech communication journal, Elsevier.

 

[2] Ben Aicha, S. Ben Jebara, “Combination of perceptual tools with classic denoising techniques for reducing musical noise,” Journal of Signal Image and Video Processing, SpringerVerlag, DOI 10.1007/s11760-010-0171-y, published online July 2010.

 

[3] A.Ben Aicha, S. Ben Jebara, ”Quantitative perceptual separation of two kinds of degradations in speech denoising applications,” in Advances in Nonlinear of Speech Processing, Lecture Notes in Computer Science, vol. 4885, Springer Berlin editions, pp.230-245, December 2007.

 

[4] R. El Haj Ali, S. Ben Jebara, ”Esophageal speech enhancement using source synthesis and formant patterns modification,” in Signal Processing for Image Enhancement and Multimedia Processing, Multimedia Systems and Applications Series, vol. 31, Springer editions, pp. 279-288, December 2007.

 

[5] S. Ben Jebara, H. Besbes, ``A variable step size filtered sign algorithm for acoustic echo cancellation," IEE Electronic Letters, vol. 39, no. 12, pp. 936-938, Juin 2003.

 

[6] S. Ben Jebara, ``Coherence based voice activity detector," IEE Electronics Letters, vol. 38, no. 22, pp. 1393-1397, octobre 2002.

 

[7] Z. Bel Hadj, S. Ben Jebara, ``Adaptive speckle reduction using combined multiresolution analysis and prediction technique," Int. Journal on Remote Sensing, vol. 23, no. 11, pp. 2263-2282, 2002.

 

[8] A.Benazza-Benyahia, S. Ben Jebara, ``A multiresolution based reference estimation for adaptive ECG signals denoising," Journal Marocain en Informatique, Automatique et Traitement du Signal, vol. 3, no. 2, 2002.

 

Conférences

 

[1] S. Ben Jebara, “Healthy/esophageal speech classification using features based on speech production and audition mechanisms," International Joint Conference on Biomedical Engineering Systems and Technologies BIOSIGNALS, Barcelona, Spain, February 2013.

 

[2] R. Bouazizi, S. Ben Jebara, “ A better understanding of esophageal speech excitation source behavior," International Joint Conference on Biomedical Engineering Systems and Technologies BIOSIGNALS, Barcelona, Spain, February 2013.

 

[3] S. Ben Jebara, “Extraction of EMG signal buried in RMI noise," International Conference on Computer Medical Applications ICCMA, Sousse, Tunisia, January 2013.

 

[4] S. Ben Jebara, “A pitch modification technique using cepstrum,” IEEE International Symposium on Signal Processing and Information Technology, ISSPIT, Ho Chi Minh, Vietnam, December 2012.

 

[5] K. Essafi, S. Ben Jebara, “Evaluation of different pre-whitening decorrelation based adaptive feedback cancellers in hearing aids using perceptual criteria,” IEEE International Symposium on Signal Processing and Information Technology, ISSPIT, Ho Chi Minh, Vietnam, December 2012.

 

[6] A. Ben Aicha, S. Ben Jebara, ``Effects of intra-frame noise smoothing on speech enhancement algorithms," Non Linear Speech Processing Workshop NO'LISP, Las Palmas, Canaria Islands, Spain, 7-9 November 2011.

 

[7] Y. Ben Ayed, S. Ben Jebara, ``Is fundamental frequency meaningful for severe substitution voices such as esophageal speech?," Non Linear Speech Processing Workshop NO'LISP, Las Palmas, Canaria Islands, Spain, 7-9 November 2011.

 

[8] K. Essafi, S. Ben Jebara, “Critères perceptifs d’´evaluation de la qualité des signaux dans les prothèses auditives,” accepté au Colloque sur le Traitement du Signal et des images GRETSI, Bordeaux-France, Septembre 2011.

 

[9] K. Essafi, S. Ben Jebara, “A comparative study between different decorrelation based acoustic feedback cancellers,” Proc. of the Int. workshop on Multimedia Signal Processing (MMSP), Saint-Malo, France, 4-6 Oct. 2010

 

[10] A Werghi, J Di-Martino, S. Ben Jebara, “On the use of an iterative estimation of continous probabilistic transforms for voice conversion”, Proc. of the Int. Sym. On Image and Video Communications over fixed and mobile networks (ISIVC), 30 Sept-2 Oct 2010, Rabat, Maroc,

 

[11] K. Essafi, S. Ben Jebara, “A decorrelation based adaptive prediction filter for acoustic echo cancellation in hearing aids,” Proc. of the Int. Conf. Information Science Signal Processing and their applications (ISSPA), 10-13 May 2010.

 

[12] A. Ben Aicha, S. Ben Jebara, “Some reflexions and results about the effect of speech denoising algorithms on speech quality”, Proc. of the Int. Conf. Information Science Signal Processing and their applications (ISSPA), 10-13 May 2010.

 

[13] M. J. Alam, S.A. Selouani, D. OShaughnessy, S. Ben Jebara, “An improved perceptual speech enhancement technique employing a psychoacoustically motivated weighting factor”, INTERSPEECH, Brighton-UK, September 2009.

 

[14] K. Essafi, S. Ben Jebara, “Non linear perceptual transformation of input signals for stereophonic acoustic echo cancellation ,” Int. Conf. On Speech and Computer SPECOM, St-Petersburg-Russia, June 2009.

 

[15] S. Ben Jebara, “On the usefulness of linear and non linear filtering for esophageal speech prediction,” Proc. of the Advanced Voice Function Assessment International Workshop AVFA, Madrid-Spain, May 2009.

 

[16] K. Essafi, S. Ben Jebara, “Une solution de décorrélation du signal de parole en utilisant des outils perceptifs et la prédiction linéaire: application à l’annulation d’écho acoustique ,” Proc. of the Conf. COmpression et Representation des Signaux Audiovisuels CORESA, Toulouse-France, March 2009.

 

[17] K. Essafi, S. Ben Jebara, “A perceptual based input decorrelation for monophonic acoustic echo cancellation,” Proc. of the 2nd International Conference on Signals, Circuits and Systems SCS, Hammamet-Tunisia, November 2008.

 

[18] M. J. Alam, S.A. Selouani, D. O’Shaughnessy, S.Ben Jebara, “Speech Enhancement using a Wiener denoising technique and musical noise reduction,” Proc. Of INTERSPEECH, Brisbane-Australia, September 2008.

 

[19] S. Ben Jebara, “Voice activity detection using periodioc/aperiodic coherence features,” Proc. of the 16th European Signal Processing Conf. EUSIPCO, Lausanne- Switzerland, August 2008.

 

[20] A. Ben Aicha, S. Ben Jebara, “Decorrelation of input signals for stereophonic acoustic echo cancellation using the class of perceptual equivalence,” Proc. of the 16th European Signal Processing Conf. EUSIPCO, Lausanne-Switzerland, August 2008.

 

[21] A. Ben Aicha and S. Ben Jebara, “Evaluation and validation of a new perceptual speech quality measure for speech enhancement,” Proc. of the International Symposium On Image/Video Communications over fixed and mobile networks ISIVC, Bibao-Spain, July 2008.

 

[22] B. Garcia, S. Ben Jebara, I. Ruiz and M. Mendezona, “Oesophageal voice quality assessment protocole using acoustical, perceptual and medical parameters,” Proc. Of the International Symposium On Image/Video Communications over fixed and mobile networks ISIVC, Bibao-Spain, July 2008.

 

[23] A. Ben Aicha, S. Ben Jebara, ”Perceptual musical noise reduction using critical bands tonality coefficients and masking thresholds,” Proc of INTERSPEECH, Antwerp-Belgium, August 2007.

 

[24] A. Ben Aicha, S. Ben Jebara, ”Caractérisation de la dégradation apportée par les techniques de débruitage de la parole,” Proc. Ateliers de travail sur le traitement et l’analyse de l’information TAIMA, Hammamet-Tunisia, May 2007.

 

[25] A. Ben Aicha, S. Ben Jebara, ”Quantitative perceptual separation of two kinds of degradations in speech denoising applications,” Proc. of the Workshop on. NOn Linear Speech Processing NO’LISP, Paris-France, May 2007.

 

[26] S. Ben Jebara, ”Periodic/aperiodic decomposition for improving coherence based multi-cahnnel speech denoising”, Proc. of the International Symposium on Signal Processing and Applications ISSPA, Sharjah-Emirates, February, 2007.

 

[27] R. EL Haj Ali, S. Ben Jebara, ”Esophageal speech enhancement using excitation source synthesis and formant structure modification,” IEEE International Conference on Signal-Image Technology and Internet-Based Systems SITIS, Hammamet-Tunisia, December 2006.

 

[28] A. Ben Aicha and S. Ben Jebara, ”Comparison of three methods of eliminating musical tones in speech denoising subtractive techniques,” IEEE International Conference on Electronics, Circuits and Systems ICECS, Nice-France, December 2006.

 

[29] M. Hizem, A. Souissi, S. Ben Jebara, Paramétrisation robuste de la musique transmise en environnement mobile,” Proc. of the International Symposium On Image/Video Communications over fixed and mobile networks ISIVC, Hammamet-Tunisia, September 2006.

 

[30] S. Ben Jebara, Periodic/aperiodic decomposition and wavelet transform for noise reduction in esophageal speech, Proc. of the International Symposium On Image/Video Communications over fixed and mobile networks ISIVC, Hammamet-Tunisia, September 2006.

 

[31] A. Ben Aicha, S. Ben Jebara, Utilisation de la courbe de masquage pour la détection des tonales musicales artificielles dans un signal de parole d´ebruité par approches spectrales,” Proc. of the International Symposium On Image/Video Communications over fixed and mobile networks ISIVC, Hammamet-Tunisia, September 2006.

 

[32] H. Besbes, S. Ben Jebara, Double direction adaptation for noise reduction in prewhitened LMS-type algorithms,” Proc. of the International Conference on Acoustics, Speech and Signal Processing ICASSP, Toulouse-France, May 2006.

 

[33] S. Ben Jebara, A perceptual approach to reduce musical noise phenomenon with Wiener denoising technique,” Proc. of the International Conference on Acoustics, Speech and Signal Processing ICASSP, Toulouse-France, May 2006.

 

[34] A. Ben Aicha, S. Ben Jebara, ”Caractérisation de la dégradation apportée par les techniques de débruitage de la parole,” Proc. Ateliers de travail sur le traitement et l’analyse de l’information TAIMA, Hammamet-Tunisia, May 2007.

 

[35] S. Ben Jebara, Multi-band coherence features for voiced-unvoiced-silence speech classification,” Proc. of the International Conference on Information and Communication Technologies: from Theory to Applications ICTTA, Damascus-Syria, April 2006.

 

[36] A. Ben Aicha, S. Ben Jebara, D. Pastor, Speech denoising improvement by musical tones shape modification," Accepted for publication at International Symposium on Control, Communications and Signal Processing ISCCSP, Marrakech, Morocco, March 2006.

 

[37] A. Amerhraye, D. Pastor, S. Ben Jebara, On the application of recent results in statistical decision and estimation theory to perceptual filtering of noisy speech signals," Accepted for publication at International Symposium on Control, Communications and Signal Processing ISCCSP, Marrakech, Morocco, March 2006.

 

[38] S. Ben Jebara, H. Besbes, A comparative study between pre-whitened based sign algorithms in time-varying environments," Proc. of the IEEE International Conference on Electronics, Circuits and Systems ICECS, Gammarth, Tunisia, December 2005.

 

[39] H. Besbes, S. Ben Jebara, A Stop & Go Pre-whitened Sign Algorithm," Proc. of the European Signal Processing Conference EUSIPCO, Antalya, Turkya, September 2005.

 

[40] S. Ben Jebara, H. Besbes, ``Une famille d'algorithmes de signe à base de structures blanchissantes," Proc. of the Colloque International Télécoms 2005, Rabat, Maroc, Mars 2005.

 

[41] S. Ben Jebara, T. Ben Amor, ``On improving voice activity detection by fuzzy logic rules : case of coherence based features," Proc. of European Signal Processing Conference EUSIPCO,Vienne, Autriche, Septembre 2004.

 

[42] H. Besbes, S. Ben Jebara , ``A variable step size pre-whitened sign algorithm with quantized normalizing factor. Application to acoustic echo cancellation," Proc. of the European Signal Processing Conference EUSIPCO, Vienne, Autriche, Septembre 2004.

 

[43] A. Ben Aicha, F. Tlili, S. Ben Jebara, ``A wavelet packet based frequency offset estimation in OFDM Systems," Proc. of the Int. Symp. on Image/Video Communications over Fixed and Mobile Networks ISIVC, Brest, France, July 2004.

 

[44] M. Hamed, S. Ben Jebara, H. Besbes, ``Amélioration de la qualité d'écoute par débruitage et modification du bruit de fond," Journées Tunisiennes d'électrotechnique et d'automatique JTEA, Hammamet, Tunisie, Mai 2004.

 

[45] Ben Aicha, F. Tlili, S. Ben Jebara, ``PAPR analysis and reduction in WPDM systems," Proc. of the Int. Symp. on Control, Communications and Signal Processing ISCCSP, Hammamet, Tunisia, March 2004.

 

[46] I.Ben Slimene, S. Ben Jebara, A. Benazza-Beyahia,``Use of coherence in wavelet and multiwavelet domain for microphone array speech enhancement," Proc. of the Int. Symp. on Control, Communications and Signal Processing ISCCSP, Hammamet, Tunisia, March 2004.

 

[47] H. Besbes, S. Ben Jebara, ``A solution to reduce noise enhancement in pre-whitened LMS-type algorithms : The double direction adaptation," Proc. of the Int. Symp. on Control, Communications and Signal Processing ISCCSP, Hammamet, Tunisia, March 2004.

 

[48] H. Gaha, S. Ben Jebara, S. Cherif, ``Réflexions sur quelques stratégies pour le contrôle de puissance dans les systèmes W-CDMA," Conférence sur les Sciences Electroniques, Technologies de l'Information et des Télécommunications SETIT, Sousse, Tunisia, March 2004.

 

[49] L. Helaoui, S. Ben Jebara, A. Benazza-Beyahia, ``A two-channel speech denoising method combining wavepackets and frequency coherence, "Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications MAVEBA, pp. 57-60, Firenze, Italia.

 

[50] S. Ben Jebara, H. Besbes, ``On pre-whitened sign algorithms, "Proc. of the International Symposium on Circuits and Systems ISCAS, Bangkok, Thailand, May 2003.

 

[51] S. Ben Jebara, A. Benazza-Benyahia, ``Réduction du speckle par filtrage de Wiener et Rationnel dans le domaine transformé en ondelettes," Conférence sur les Sciences Electroniques, Technologies de l'Information et des Télécommunications SETIT, Mahdia, Tunisie, Mars 2003.

 

[52] H. Besbes, S. Ben Jebara, ``The pre-whitened NLMS: a promising algorithm for acoustic echo cancellation '', Proc. of the IEEE Int. Conf. on Electronics, Circuits and Systems ICECS, Dubrovnik, Croatia, September 2002.

 

[53] S. Ben Jebara, ``The multi-band LPC coherence for voice activity detection'', Proc. of the WSEAS Int. Conf. in Signal Processing, Robotics and Automation ISPRA, Cadiz, Spain, June 2003.

 

[54] S. Ben Jebara, H. Besbes, ``A decorrelation based criterion for speech pre-whitening. Application to acoustic echo cancellation," Proc. of the 1st IEEE Int. Symp. on Signal Processing and Information Technology ISSPIT, Cairo, Egypt, December 2001.

 

[55] S. Ben Jebara, ``A voice activity detector in noisy environments using linear prediction and coherence method'', Proc. of the WSES Multiconference on Acoustics Music: Theory and Applications, pp. 308-311, Skiathos, Greece, September 2001.

 

[56] A. Benazza-Benyahia, S. Ben Jebara, ``A multiresolution based reference estimation for adaptive ECG signals denoising," Proc. of the Int. Conf. on Image and Signal Processing ICISP, Agadir, Morocco, pp. 875-882, May 2001.

 

[57] T. Hdiji, S. Ben Jebara, ``Wavelet/Wiener approach for residual acoustic echo reduction," Proc. of the Int. Conf. on Image and Signal Processing ICISP, Agadir, Morocco, pp. 361-370, May 2001.

 

[58] A. Benazza-Benyahia, S. Ben Jebara, Z. Belhadj, ``Représentations multirésolution pour le débruitage et la compression sans pertes des images," Colloque ondelettes et fractales, Monastir, Tunisie, Mai 2001.

 

[59] S. Ben Jebara, A. Benazza-Benyahia, ``A unifying approach for image denoising," Proc. of the Smart System and Device Conference SSDC, Hammamet, Tunisia, March 2001.

 

[60] S. Ben Jebara, A. Benazza-Benyahia, A. Benkhalifa, ``Reduction of musical noise generated by spectral subtraction by combining wavelet packet and wiener filtering," Proc. of the European Signal Processing Conference EUSIPCO, Tampere, Finland, September 2000.

 

[61] S. Ben Jebara, H. Besbes, M. Jaidane-Saidane, ``On the robustness of adaptive predictive scheme for tracking randomly time-varying channels," Proc. of the European Signal Processing Conference EUSIPCO, Tampere, Finland, September 2000.

 

[62] A. Lakhzouri, S. Ben Jebara, H. Besbes, ``Acoustic echo cancellation and noise reduction for hands-free communications : techniques and implementation on DSP," Proc. of the Int. Symp. on Control, Communications and Signal Processing ISCCSP, Rabat, Morocco, vol. 3, pp. 53-60, April 2000.

 

[63] S. Ben Jebara, A. Benazza-Benyahia, A. Benkhalifa, “Improved schemes combining wavelet packet transform and wiener filtering for image denoising,” Proc. of the IASTED Computer Graphics and Imaging CGIM, Palm Springs-USA, October 1999.

 

[64] S. Ben Jebara, M. Jaidane-Saidane, “Analyse théorique de la capacité de poursuite du gradient stochastique : cas de non stationnarités markoviennes et d’entrées corrélées,” Proc. of the Colloque sur le Traitement du Signal et des images GRETSI, Vannes-France, September 1999.

 

[65] Z. Belhadj, S. Ben Jebara, H. Maatar, “Speckle filtering by multiresolution analysis,” Proc. of the IEEE International Geoscience And Remote Sensing Symposium IGARSS, Hamburg-Germany, June 1999.

 

[66] A. Benazza-Benyahia, S. Ben Jebara, “Non linear noise removal based on wavelet transform and smoothing techniques,” Proc. of the EURASIP DSP for Multimedia Communications and Services ECMCS, Karakow-Poland, June 1999.

 

[67] M. Jaidane-Saidane, S. Ben Jebara, H. Besbes, S. Cherif, J. Ezzine, M. Turki, “Blind equalization for randomly time-varying channels,” Proc. of the Inverse Problems Conference PICOF, Carthage-Tunisia, April 1999.

 

[68] S. Ben Jebara, “Débruitage des Signaux 1D et 2D par filtrage adaptatif combiné à l’analyse multirésolution,” Proc. of the Journées sur les Télécommunications, Tunis-Tunisia, January 1999.

 

[69] S. Ben Jebara, M. Jaidane-Saidane, “Comparison of based adaptive predictive schemes for improvement of tracking randomly time-varying systems,” Proc. of the IEEE Int. Conf. on Electronics, Circuits and Systems ICECS, Lisboa-Portugal, September 1998.

 

[70] S. Ben Jebara, M. Jaidane-Saidane, “Influence de la puissance de l’entrée sur la capacité de poursuite des filtres adaptatifs,” Proc. du Colloque sur le Traitement du Signal et des images GRETSI, Grenoble-France, September 1997.

 

[71] S. Ben Jebara, M. Jaidane, “Best input choice for optimal tracking randomly time-varying channels: justification of adaptive predictive structure,” Proc. of the Int. Conf. Acoustics, Speech and Signal Processing ICASSP, Munchen-Germany, April 1997.

 

[72] S. Ben Jebara, M. Jaidane, “Influence de la corrélation des signaux pour l’identification adaptative d’un canal non stationnaire,” Proc. of the Journées Tunisiennes sur l’Electronique et l’Automatique JTEA, Nabeul-Tunisia, November 1996.

 

[73] S. Ben Jebara, M. Jaidane, “Symmetric adaptive predictive structures for tracking channel non stationarities,” Proc. of the 7th IEEE Workshop on Digital Signal Processing DSP, Loen-Norway, September 1996.

 

[74] S. Ben Jebara, M. Jaidane, M. Benidir, “Transformée en ondelettes et identification adaptative des canaux non stationnaires,” Proc. of the Colloque Maghrébin sur les Modèles Numériques de l’Ingénieur CMMNI, Rabat-Morocco, November 1995.

 

[75] S. Ben Jebara, M. Jaidane, M. Benidir, “Poursuite de non stationnarités par filtrage multirésolution adaptatif,” Proc. of the Colloque sur le Traitement du Signal et des images GRETSI, Juan les Pins-France, September 1995.

 

[76] S. Ben Jebara, M. Gammar, M. Jaidane, “ Compression numérique d’images satellitaires par transformée en ondelettes,” Proc. of the Journées Tunisiennes sur l’Electronique et l’Automatique JTEA, Hammamet-Tunisia, November 1994.

 

[77] S. Ben Jebara, M. Jaidane, “Compression d’images satellitaires par quantification vectorielle : optimisation aux bas débits,” Proc. of the Journées Tunisiennes sur l’Electronique et l’Automatique JTEA, Hamammet-Tunisia, February 1992.