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AWT IMAGE

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AWT IMAGE
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:: دکتر اکبری ::

  AWT IMAGEسال و محل اخذ مدرک دکترا: 1374- فرانسه

  تلفن داخلی: 5380

  تلفن مستقیم:73225380 

  Email: akbari-at-iust.ac.ir

  /Website: http://webpages.iust.ac.ir/akbari

 http://aspl.iust.ac.ir

    دکتر احمد اکبری

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سوابق آموزشی/ سوابق شغلی / سوابق تدریس دانشگاهی / سوابق پژوهشی/ سوابق اجرایی
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 • سوابق آموزشی
  الف) تحصیلات دانشگاهی:

  - دکترای پردازش سیگنال - دانشگاه رن1 _ سال اخذ 1995

  - فوق لیسانس مهندسی مخابرات ، دانشگاه صنعتی اصفهان- ایران، سال اخذ 1369

  - لیسانس الکترونیک- دانشگاه صنعتی اصفهان- ایران ، سال اخذ 1366

  

  • سوابق شغلی

  - عضو هیات علمی، دانشکده کامپیوتر ، دانشگاه علم و صنعت ایران ، از1374 تا کنون

 

  • سوابق تدریس دانشگاهی

  دروس کارشناسی ارشد ودکتری:

  پردازش وشناسایی گفتار
  مباحث پیشرفته در پردازش و شناسایی گفتار
  تئوری اطلاعات
  دروس کارشناسی:

  سیگنالها وسیستم ها
  شبکه های کامپیوتری
  انتقال داده ها
  ریز پردازنده 1
  • سوابق پژوهشی

  معاونت پژوهشی دانشکده کامپیوترسال 1385 تا کنون

 

  • سوابق اجرایی

  عضو هیات مدیره انجمن کامپیوتر به مدت 3 دوره
  ریئس مرکز تحقیقات فناوری اطلاعات 1380 تا کنون 
  رئیس مرکز کامپیوتر دانشگاه علم وصنعت 1385-1378
 

Some Journal Papers 

  2010-2011

   Reza Sahraeian, Mehdi Mohammadi, Ahmad Akbari, Ahmad Ayatollahi, “Evolutionary eigenvoice MLLR speaker adaptation”, WCIT-2010, ELSEVIER, Procedia Computer Science 3 (2011) 992–997

 Shima Tabibian, Akram Shokri, Ahmad Akbar, Babak Nasersharif, “Performance evaluation for an HMM-based keyword spotter and a Large-margin based one in noisy environments”, WCIT-2010, ELSEVIER, Procedia Computer Science 3 (2011) 1018–1022

   Zamani B., Akbari A., Nassersharif B. and Jalalvand A., “Optimized Discriminative Transformations for Speech Features Based on Minimum Classification Error”, Pattern Recognition Letters, Vol. 32, pp. 948–955, 2011

   Zamani B.,Jalalvand A., Mohammadi M., Akbari A. and Nassersharif B., “Discriminative Transformation for Speech Features Based on Genetic”, IEICE Electronics Express (ISI Journal), Vol. 7, No. 4, pp.247-253, 2010

   Sahraian R., Zamani B., Akbari A. and Ayatollahi A., “Eigenspace-Based MLLR Adaptation using MCE”, November 2010 International Review on Computers and Software (IRECOS), Vol. 5, No. 6, Nov. 2010

   Mehdi Mohammadi, Bijan Raahemi, Ahmad Akbari, Hossein Moeinzadeh, Babak Nasersharif, “Genetic-based minimum classification error mapping for accurate identifying Peer-to-Peer applications in the internet traffic”, ELSEVIER, Expert Systems with Applications 38 (2011) 6417–6423, 2011

 

  Reza Sahraeian, Mehdi Mohammadi, Ahmad Akbari, Ahmad Ayatollahi, “Evolutionary eigenvoice MLLR speaker adaptation”, WCIT-2010, ELSEVIER, Procedia Computer Science 3 (2011) 992–997

  Shima Tabibian, Akram Shokri, Ahmad Akbar, Babak Nasersharif, “Performance evaluation for an HMM-based keyword spotter and a Large-margin based one in noisy environments”, WCIT-2010, ELSEVIER, Procedia Computer Science 3 (2011) 1018–1022

  Zamani B., Akbari A., Nassersharif B. and Jalalvand A., “Optimized Discriminative Transformations for Speech Features Based on Minimum Classification Error”, Pattern Recognition Letters, Vol. 32, pp. 948–955, 2011

  Zamani B.,Jalalvand A., Mohammadi M., Akbari A. and Nassersharif B., “Discriminative Transformation for Speech Features Based on Genetic”, IEICE Electronics Express (ISI Journal), Vol. 7, No. 4, pp.247-253, 2010

  Sahraian R., Zamani B., Akbari A. and Ayatollahi A., “Eigenspace-Based MLLR Adaptation using MCE”, November 2010 International Review on Computers and Software (IRECOS), Vol. 5, No. 6, Nov. 2010

  Mehdi Mohammadi, Bijan Raahemi, Ahmad Akbari, Hossein Moeinzadeh, Babak Nasersharif, “Genetic-based minimum classification error mapping for accurate identifying Peer-to-Peer applications in the internet traffic”, ELSEVIER, Expert Systems with Applications 38 (2011) 6417–6423, 2011

 

 

  · Zamani B.,Jalalvand A., Mohammadi M., Akbari A. and Nassersharif B., “Discriminative Transformation for Speech Features Based on Genetic”,IEICE Electronics Express (ISI Journal), Vol. 7, No. 4, pp.247-253, 2010.

  · Sahraian R., Zamani B., Akbari A. and Ayatollahi A.
, “Eigenspace-Based MLLR Adaptation using MCE”, November 2010 International Review on Computers and Software (IRECOS), Vol. 5, No. 6, Nov. 2010.

  · Sahraian R., Zamani B., Nassersharif B. , Akbari A. and Ayatollahi A., “New Approach in Transform-Based Speaker Adaptation Using Minimum Classification Error”, 12th International Conference on Computer Modelling and Simulation (UKSIM 2010), Cambridge University (Emmanuel College) England

  · Zamani B., Akbari A. and Nassersharif B., “Vowel Recognition by Using Kernel Minimum Classification Error (KMCE) (in farsi)”, 18th Iranian Conference on Electrical Engineering (ICEE 2010), Iran

  · Sahraian R., Zamani B., Akbari A., Ayatollahi A. and Nassersharif B., “Modification of MLLR Speaker Adaptation Method in Independent Speech Recognition by Minimum Classification Error” (in farsi),15th Annual International Computer Society of Iran Computer Conference (CSICC 2010), Iran

  · Shima Tabibain, Akram Shokri, Ahmad Akbari, Babak Nasersharif, “Performance evaluation for an HMM-based keyword spotter and a Large-magin-based one in noisy environments”, WCIT 2010, indexed by Science Direct

  2009

  · Mohsen Rahmani, Nima Yousefian, Ahmad Akbari “ Energy-based speech enhancement technique for hands-free communication ” Electronic Letters 1st January 2009 Vol.45 No.

  · Abbasian, Houman; Nasersharif, Babak; Akbari, Ahmad, "Class Dependent LDA Optimization Using Genetic Algorithm for Robust MFCC Extraction", Advances in Computer Science and Engineering, Communications in Computer and Information Science, Volume 6, Springer Berlin Heidelberg, 2009, p. 807

  · Shima Tabibian, Ahmad Akbari “Noise Reduction from Speech Signal based on Wavelet Transform and Kullback-leibler Divergence” International Journal of Information and Communication Technology. pp 21-27

 

  2008

  · Rahmani M., Akbari A. , Ayad B., "Phase Based Cross-PSD Noise Estimation for Dual Microphone Speech Enhancement in Diffuse Noise Field", Signal processing, Accepted for publication, 2008.

  · Rahmani M., Akbari A., Ayad B., Derakhshan N., “Minimum Statistics Noise Cross PSD Estimator for Two-Microphone Speech Enhancement", Journal of Zhejiang University, Accepted for publication, 2008.

  · Rahmani M., Akbari A., Ayad B., “An Iterative Method for Cross-PSD Noise Estimation for Dual Microphone Speech Enhancement”, Applied acoustics, Accepted for publication, 2008.

  2007

  · Nasersharif B., Akbari A., “SNR-Dependent Compression of Enhanced Mel Sub-Band Energies for Compensation of Noise Effects on MFCC Features”, Pattern Recognition Letters, Special Issue on Advances in Pattern Recognition for Speech and Audio Processing, Vol. 28, Iss. 11, pp. 1320-1326, August 2007.

  2006

  · Nasersharif B., Akbari A., “Sub-Band Weighted Projection Measure for Sub-Band Speech Recognition in Noise”, IEE Electronics letters , Vol. 42, No. 14, pp. 829-831, 6th July 2006 .

  2005

  · Nasersharif B., Akbari A., “Improved HMM Entropy and Sub-Band Weighted Projection Measure For Robust Sub-Band Speech Recognition”, IAEEE Journal , vol. 2, No.1, pp. 3-16, 2005. (In Farsi)

  2003

  · Nasersharif B., Rahmani M., Akbari A., “Robust Speech Recognition Based On Mapping Noisy Features to Clean Features”, CSI Journal on Computer Science and Engineering , Vol. 1, No. 4, pp.31-38, winter 2003.

  Some Conference Papers:

 

  2008

  · Zamani B., Rahmani M., Akbari A., “Residual Noise Control for Coherence Based Dual Microphone Speech Enhancement”, International Conference on Computer and Electrical Engineering (ICCEE 2008), Thailand
Among various enhancement methods, dual microphone methods are utilized for their low cost implementation and use of spatial noise reduction. In this paper, we present a double microphone noise reduction method for nearby microphones. Our method is based on a modified coherence based filter which reduces correlated noises using cross spectral subtraction. In our proposed method the amount of noise reduction is controlled in order to achieve an acceptable compromise between residual noise and speech distortion. The performance of the enhancement technique is carried out using PESQ measure. Obtained results confirm the ability of the proposed approach to reduce distortion of signal.

  · .

  · Mohammadi M., Zamani B., Nassersharif B., Rahmani M., Akbari A., “A Wavelet Based Speech Enhancement Method Using Noise Classification and Shaping”, INTERSPEECH 2008.

  · Zamani B., Tabibian S., Mohammadi M., Nassersharif B., Akbari A., “A Speech Enhancement Method Based On Voiced/Unvoiced Detector in Wavelet Domain”, 13th Annual International Computer Society of Iran Computer Conference (CSICC 2008).

  · Tabibian S., Zamani B., Nassersharif B., Akbari A., “Designing the Wavelet Adapted To the Speech Signal for Noise Reduction And Evaluating Its Parameters”, 13th Annual International Computer Society of Iran Computer Conference (CSICC 2008).

  · Mohammadi M., Nasersharif B., Akbari A., “Combinational Methods for Improvement of Packet-Loss Recovery In Distributed Speech Recognition”, 3rd International Symposium on Communications, Control and Signal Processing, IEEE Signal processing Society (ISCCSP 2008).

  · Abbasian H., Nasersharif B., Akbari A., “Class Dependent LDA Optimization Using Genetic Algorithm for Robust MFCC Extraction”, 3rd International Symposium on Communications, Control and Signal Processing (ISCCSP), 2008.

  · Tabibian S., Akbari A., “Noise Reduction from Speech Signal Based on Wavelet Transform and Kullback-Leibler Divergence”, 4th international symposium on telecommunications indexed by IEEE (IST2008), 2008.

  · Yousefian N., Rahmani M., Akbari A., “Enhancing Accuracy of Source Localization in High Reverberation Environment with Microphone Array”, 13th International CSI Conference, 2008.

  · Yousefian N., Rahmani M., Akbari A., “Sound Source Localization in 3-d Space by a Triple-Microphone Algorithm”, In proceeding of 14th Asia Pacific Conference on Communication (APCC2008), Tokyo, Japan, October 14-16, 2008.

  · Abbasian H., Nasersharif B., Akbari A., Rahmani M., “Optimized Linear Discriminant Analysis for Extracting Robust Speech Features”, The 3rd International Symposium on Communications, Control and Signal Processing, St Julians, Malta, Mar. 2008.

  2007

  · Rahmani M., Akbari A., Ayad B.,"A Modified Coherence Based Method for Dual Microphone Speech Enhancement", IEEE conference on signal processing, Dubai, Nov. 2007

  · Derakhshan N., Ayatollahi A., Akbari A., Rahmani M., “Noise Power Spectrum Estimation Using Time-Variant Spectral Smoothing and Low-Delay Minima Tracking”, SPECOM’2007, Moscow, Russia, Oct. 2007.

  · Derakhshan N., Rahmani M, Akbari A., Ayatollahi A., “Evaluation of the Musical Noise in the Noise Suppressor Systems”, 16th annual international electrical engineering conference, Tehran Iran. May 2007. (In Farsi)

  · Derakhshan N., Rahmani M, Akbari A., Ayatollahi A., “Detection and Evaluation of the Musical Noise in the Noise Reduction Systems”, 13th international conference of Computer society of Iran, Tehran Iran. March 2007.

  · Zamani B., Rasoulzadeh S., Nasersharif B., Akbari A. “Computational Complexity Reduction in Wavelet Based Noise Reduction System with WOLA”, 12th Annual Conference of Computer Society of Iran (CSICC2007), Iran, 2007.

  · Tabibian S., Zamani B., Nasersharif B., Akbari A., “Designing the Wavelet Adapted to the Speech Signal for Noise Reduction”, Information and Knowledge Technology (IKT2007), Mashhad, Iran, Nov. 27-29, 2007.

  · Nasersharif B., Akbari A., Homayounpour M., “Mel Sub-Band Filtering and Compression for Robust Speech Recognition”, Interspeech Conference, pp. 1102-1105, September 2007.

  · Abbasian H., Nasersharif B., Akbari A., “Class-Dependent PCA Optimization Using Genetic Programming for Robust MFCC Extraction”, 3rd Conference on Information and Knowledge technology (IKT), September 2007.

  2006

  · Mohammadi M., Nasersharif B., Rahmani M., Akbari A., "The New Sub-Band Level Voice Activity Detector Based On Wavelet Transform", 15th International Electrical Engineering Conference , Tehran, Iran. May 2006. (In Farsi)

  · Rahmani M., Mohammadi M., Akbari A., “Residual Noise Shaping for Speech Enhancement Applications”, 15th Annual International Electrical Engineering Conference , Tehran, Iran. May 2006. (In Farsi)

  · Zamani B., Rasoulzadeh S., Nassersharif B., Akbari A., “Using WOLA Filter Bank in Wavelet Based Noise Reduction System to Reduce Computational Complexity”, 14th Iranian Conference on Electrical Engineering (ICEE2006) , Iran, 2006.

  · Zamani B., Nassersharif B., Akbari A., “Evaluation of Critical Bands Effects and Wavelet Filter Bank Parameters on Speech Enhancement Methods”, 11th Annual Conference of Computer Society of Iran (CSICC2006) , Iran, 2006.

  · Nasersharif B., Akbari A., “A Framework for Robust MFCC Feature Extraction Using SNR-Dependent Compression of Enhanced Mel Filter Bank Energies”, 9th International Conference on Spoken Language Processing (ICSLP) , pp. 33-36, September 2006.

  · Nasersharif B., Akbari A., Homayounpour M., “Spectral Peaks Enhancement for Extracting Robust Speech Features”, Proceeding of 14th European Signal Processing Conferences (EUSIPCO) , 2006.

  · Nasersharif B., Akbari A., Homayounpour M., “Application of HMM Adaptation and Robust Features to Sub-Band Speech Recognition in Noise”, 11th International CSI Computer Conference (CSICC2006), Vol. 2, pp.215-219, Tehran, Iran, January 2006.

  · Rahmani M., Abdipoor R., Akbari A., Ayad B., “Background Noise Control for Speech Enhancement Applications”, Proceeding of 11th CSICC , pp. Tehran, 2006.

 

  (بالای صفحه)
 

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