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PERSONAL DETAILS:
Name/Family name: Ahmad AKBARI
Current Workplace Address:
Head
of Research Center for Information Technology (RCIT)
Associate
Professor, Dep. of Computer
Iran University of Science and Technology
Narmak, Tehran, Iran
Email : akbari@iust.ac.ir
Phone/ Fax : (+98)
21-77240444, (+98) 21-77491192/3, (+98) 21-77491128
EDUCATIONAL
QUALIFICATIONS:
1992-1995 Ph.D.,
Electrical Eng.,
Thesis: Speech Enhancement for Hands-Free Telecommunications Applications
Laboratory: Signal and Image Processing Laboratory (LTSI)
University of Rennes 1, Rennes, France
1991-1992 DEA,
Signal Image, Tele Communication and Radar
University of Rennes 1, Rennes, France
1990-1991 DHET,
Computer Networks, ENSEEIHT, Toulouse, France
1987-1989 M.Sc.,
Communications Engineering, Isfahan University of Technology,
Isfahan, Iran
1983-1987 B.Sc.,
Electronics Eng, Isfahan University of Technology
Isfahan, Iran
TEACHING
EXPERIENCES:
1996-present Assistant professor in Dept. of
Computer Eng.,
Technology, Tehran, Iran
(following courses):
Undergraduate
Courses:
·
Signals & Systems
·
Data Communications
·
Computer Networks
·
Microprocessors
Graduate
Courses:
·
Digital Processing Of Speech
Signals
·
Advanced Topics in Speech
Processing
·
Information Theory
MANAGEMANT
EXPERIENCES:
- Board of Computer Society of
Iran 2000-2006, 2010-present
- Head of
- Head of research center for
Information Technology (RCIT) 2002-present
- Head of
Audio & Speech Processing Lab. (ASPL)
- Head of
Network Research Group(NRG), RCIT
RESEARCH
EXPERIENCES:
Ph.D. Thesis under my supervisory (Student, “Subject”,
Date):
1-
H. Asgharian, 2010-Present
2-
R. Abdipour, 2010-Present
3-
M. Mohammadi, “Feature Mapping And
Combinational Classification For Intrusion Detection, Based On Reinforcement
Learning” , 2007-Present
4-
S. Tabibian, “Improving The Performance
Of Keyword Spotting In HMM-Based Systems And Discriminative Classifiers” ,
2007-Present
5-
B. Zamani, “ A framework for
discriminative feature transformation to increase speech recognition rate”,
2006-Present
6-
M. Rahmani, “Two Microphone Noise
Reduction Systems and its Real Time Implementation”, (2005 - 2008)
7-
B. Nassersharif, “Robust Speech
Recognition Using Sub-Band Processing in Environments with Uncorrelated Noise”
,(2003 –2007)
Some of M.Sc. Thesis under my supervisory (Student,
Subject, Date):
1-
M. Basir, “Robust Speech Recognition
Using Feature Reduction Methods” , 2008-Present
2-
M. Iranmanesh, “Improving Feature
Transformation Techniques For Increasing Performance In Speech Recognition And
Intrusion Detection Domains”, 2008-Present
3-
Sh. Jalavand, “Improving The Acoustic
Model Adaption Methods For Using In Farsi Speech Recognition”, 2008-Present
4-
M. Hoseini, “Improving Speech
Recognition Using Statistical Language Model Adaptation”, 2008-Present
5-
A. Ariana, “Attack Recognition In Computer
Networks Using Artificial Immune Recognition System”, 2008-Present
6-
M. Rajabzadeh, “Improving The Performance
Of Keword Spotting By A New Search Method In Phoneme-Based Lattices”,
2008-Present
7-
Reza Sahraeian, “Novel approaches for
Speaker adaptation in Speech Recognition systems”, 2007-2010
8-
M. Jahanbakhsh, “Monitoring of SIP
messages for improving performance of SIP Protocol”, 2007-2010
9-
M. Farsinejad, “Design and
Implementation of a Robust HMM-based VAD”, 2007-2010
10-
H. Kaviani, “Speech Enhancement Based
on Wavelet Transformation Using Transformation Parameters Modification ”,
2007-2010
11-
H. Moeinzadeh, “Robustness of
Distributed Speech Recognition Using Features Transformation”, 2007-2009
12-
A. Jalalvand, “Applying transformation
to speech features to improve speech recognition rate in noisy environments”, 2006-2007
13-
N. Yousefian, “Dual-Microphone Speech
Enhancement for Telephony Systems”, 2006-2007
14-
Nima Derakhshan, “Design and
Implementation of a Speech Quality Assessment System for Assessing Noise
Suppression Systems”, 2004-2007
15-
S. Rasoolzadeh , “Reduction of filter
bank computational complexity for speech enhancement applications”, 2006
16-
B. Zamani, “Study of analysis and
synthesis filter bank parameters in speech enhancement methods “, 2005
17-
K. Zarei, “Implementation of Viterbi
algorithm for Farsi telephony speech recognition “,2005
18-
R. Abdipour, “Speech enhancement
methods based on apriori signal to noise ratio”, 2004
19-
M. Falahati, “Improving the performance
of multi rate coder for voice over IP application”, 2004
20-
J. Ganjidoost “Study of cache structure
and it’s impact on the performance of a network processors”, 2004
21-
M. Rahmani, “Using speech enhancement
methods as preprocess for speech recognition systems”, 2001
22-
Khalilian," Quality of Service
Architectures for web-based Control and Monitoring Systems",2001
23-
H. Kandi, "Design of a PC
Accelerator Board Using Reconfigurable FPGA's", 2000
24-
A. Arfaee," Study of Multi-valued
Current-mode Circuits for Efficient Arithmetic Computation; Application to a
GSM Coder", 2000
25-
H. Ghafari," Speaker Dependent
Continuous Speech Recognition for a limited Farsi Data Base Using MLP and Time
Delay Neural Networks",2000
26-
B. Naser Sharif, "Continuous
Speech Recognition by a Hybrid HMM-ANN Model for Farsi Applications", 2000
27-
S. Nemati, " Simulation of MAC and
DLC Layers for a DECT Based Telephone System", 1999
28-
S. Sheidai, "Design of a Full Rate
GSM Coder for a GSM Base Station,
Implementation by ALTERA MAX Plus II ", April 1999
29-
M. Montazerian; "Farsi continuous
Speech Recognition by MLP and Kohonen Neural Networks ", Jan. 1999
30- F. Azimi , “
Study of DTW and HMM for text-dependent speaker verification applications”,
1997
Some of B.Sc. projects under my supervisory (Student,
Subject, Date):
1-
Bolouki , “WIFI wireless systems, study
of technical challenges s”, 2006
2-
Z. Mansouri, “Study of electronic support
system : techniques and products”, 2006
3-
Salehi, “Study of voice over IP
security”, 2005
4-
Asgharzadeh, “Security of computer
networks: study of products application”, 2005
5-
H. Dehghani, F. Samsami, " Study
of Voice Browsers, Application to a Web-based
e-Mail System", 2000
6-
Z. Kamangar , "Speech Coding
using Wavelet ", 1999
7-
B. Sadeghi, "Implementing a GSM Full-rate
Decoder by ALTERA MAX Plus II", 1999
8-
F. Zareyan, "FPGA Programming,
implementing Some Arithmetic Functions", 1999
9-
B. Shahin, "Study of Audio on
Internet, Voice Browsers", 1999
10-
M. Otadi, H. Sarvari, "Using
Software Tools for Implementation of a Control & Monitoring System",
2000
11-
A. Neshati,
12-
G. Sepehri, "Design of a 4-Channel Audio
PC Board ", 1998
INDUSTRIAL
PROJECTS UNDER MY SUPERVISORY
(In
RCIT LABORATORY):
Evality- Objective Measure Tool for
Distortion Detection and Evaluation, GNNETCOM, 2006
Reducity- implement a speech enhancement
system based on wavelet using C
platform, GNNETCOM, 2006
BAMI-Wavelet Filter Bank Design for
Speech Analysis and Synthesis, GNNETCOM, 2004-2005
BAMU-Noise Characterization and
Identification for Stationary Noises, GNNETCOM, 2004-2005
Voice Browser- Implementation of a voice
browser system, Iran Telecom Research center, 2005-2006
Live help-Design and implementation of a
web based call center, Iran Ministry of Industry, 2004-2005
NMS- Design and Implementation of a
Network Management system for Iran Telecommunications Industries (ITI- Shiraz),
2003-2005
WEB TV-Design and Implementation of a WEB TV System, Iran Ministry
of Industry, 2000-2002
PUBLICATIONS :
Some
Journal Papers:
2010
· 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
· .
· 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.
2005
· Nasersharif B., Akbari A.,
“Sub-Band Weighted Projection Measure for Robust Sub-Band Speech Recognition”, EUROSPEECH Conference, pp.
945-948, Lisbon, 2005.
· Nasersharif B., Akbari A.,
“Improved HMM Entropy for Robust Sub-Band Speech Recognition”, 13th European Signal Processing Conferences
(EUSIPCO), Antalya, Turkey, 2005.
· Nasersharif B., Homayounpour
M., Akbari A., “Combination of Model-Based Methods and Multi-Band Speech
Processing for Robust Speech Recognition”, Proceeding
of 13th ICEE, pp. 209-214, Iran,
Zanjan, 2005. (In Farsi)
· Nasersharif B., Akbari A.,
Homayounpour M., "Two New Probability Weighting Methods for Robust
Multi-Band Speech Recognition", Proceeding
of 10th CSICC, vol. 1, pp. 288-296, Tehran,
2005. (In Farsi)
· Rahmani M., Abdipoor R., Akbari
A., "A New Method for SNR Estimation and Its Application in Speech
Enhancement", Proceeding
of 10th CSICC, vol. 1, pp. 313-320, Tehran,
2005. (In Farsi)
2004
· Nasersharif B., Akbari A.,
“Application of Wavelet Transform and Wavelet Thresholding in Robust Sub-Band
Speech Recognition”, 12th
European Signal Processing Conferences (EUSIPCO), pp 345-348, Vienna, Austria, 2004.
· Nasersharif B., Feizi M., Akbari
A., "Human Ear Modeling and Its Application to Speech Recognition and
Enhancement", Proceeding
of 9th CISCC, pp.
225-232, Tehran, 2004. (In Farsi)
2002
· Akbari A., Rahmani M., Nasersharif B.,
Soleimani S., "Compensation of Noise Effects on Cepstral Coefficients for
Speech Recognition", Proceeding
of 10th ICEE, pp. 432-439, 2002. (In
Farsi)
· Akbari A., Rahmani M., Nasersharif B.,
“Noise Compensation in Feature Domain for Speech Recognition”, 10th
Annual International Electrical Engineering Conference, Tabriz, Iran. May 2002.
(In Farsi)
· Akbari A., Nasersharif B., Rahmani M.,
Rahmani A. T., "Application of Noise Compensation Methods for Farsi Speech
Recognition", Proceeding of 7th CSICC, pp. 546-553, Tehran,
2002. (In Farsi)
· Rahmani M., Abdipoor R., Akbari
A., “A New SNR Estimation for Speech Enhancement”, 11th
International Conference of Computer Society of Iran, Tehran Iran. March 2005.
(In Farsi)
· Akbari A., Rahmani M., Nasersharif B.,
“Noise Compensation Methods for Robust Speech Recognition”, 7th
International Conference of Computer Society of Iran, Tehran Iran. March 2002.
(In Farsi)
2001
· Nasersharif B., Akbari A., "Syllable Based Farsi Digit
Recognition Using Hidden Markov Models", Proceeding of 6th CSICC,
Isfahan, pp. 432-437, Iran, 2001. (In Farsi)
· Noori A.,
Pedram H., Akbari A., Sheydai S., “An
FPGA Implementation of a DSP CORE for FR, HR and EFR GSM Vocoders”, ISIC
Confeernce, 2001.
· Akbari A., Ghaffari
H., Mozayanni N., "A new method for Segmentation of Continuous Farsi
speech into syllables ", Proceeding of 6th CSICC, pp. 438-443, Isafahan,
Iran, 2001 (In Farsi).
· Arfaii A. , Akbari A., Navi
K.," Design of a fast MAC unit in GSM speech codecs and it is
implementation using FPGA", Proceeding of 9th ICEE , 2001 (In Farsi).
2000
· Pedram H., Noori H., Akbari A.,
Sheydai S., " FPGA Implementation of a DSP CORE for GSM Vocoders",
Proceedings of ICM 2000,
· Akbari A., Sheydai
S., " Hardware Implementation of Full-rate GSM Vocoder on FPGA",
Proceeding of CSICC 2000, pp 141-148, Tehran, March 2000 (In Farsi)
1998
· Akbari A.,
Montazerian M., Rahmani A., " a New Approach for Continous Speech
Segmentation; Application to Speech Recognition", Proceeding of CSICC 98,
pp 27-34, Tehran, Dec 1998 (In Farsi)
· Akbari A., "Removing
acoustical noise from speech signal using a-priori signal to noise ratio",
Proceeding of 3th CSICC, pp. 147-155,
· Akbari A., Azimi F.,
"Performance Evaluation of speech Features for a DTW Based Speaker Verification System", Proceeding of
Iranian Conference on Electrical
1997
· Akbari A.,
"Speech Enhancement by Estimation of a Priori Signal to Noise Ratio
", the Annual International CSI Computer Conference, Proceeding of CSICC
97, pp 147-155, Tehran, Dec 1997 (Farsi)
1996
· Akbari A., Lebouquin R., Faucon G., "Speech
Enhancement Using a Wiener Filtering Under Signal Presence Uncertainty",
EUSIPCO, pp 971-974,
· Akbari A., Le
Bouquin R., Faucon G., "Proposal of
two Speech Enhancement Techniques for Coherent
and Incoherent Noise Reduction", Proceedings of ICEE-96, pp 164-165, Tehran, , Iran, 1996
1994
· Akbari A., Lebouquin R., Faucon G., "Optimizing
Speech Enhancement Using Sub-band Decomposition and Comparison with
Full-band Techniques",EUSIPCO, pp
1206-1209,
· Lebouquin R., Faucon G., Akbari A.,
"Speech Enhancement Using Sub-band Decomposition and Comparison with
Full-band Techniques",
1993
· Lebouquin R., Faucon G., Akbari A.,
"Proposal of a Composite Measure for Evaluation of Noise Cancelling
Methods in Speech Processing", EUSIPCO, pp
227-230, Berlin, Sep 1993
· Faucon G., Lebouquin R., Akbari A., "Mesures Objectives de
la Reduction de Bruit", GRETSI, Juan les Pins, pp 587-590, Sep
1993 (French)