Ramesh Gopinath  Ramesh Gopinath photo       

contact information

VP, Blockchain Solutions and Research
Thomas J. Watson Research Center, Yorktown Heights, NY USA
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Professional Associations

Professional Associations:  ACM  |  IEEE


2007

Efficient, low latency adaptation for speech recognition
Suleyman Serdar Kozat, Karthik Visweswariah, Ramesh Gopinath
Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on, pp. IV--777

Variational sampling approaches to word confusability
J.R. Hershey, P.A. Olsen, R.A. Gopinath
Information Theory and Applications Workshop, 2007, pp. 1--119


2006

Super-human multi-talker speech recognition: the IBM 2006 speech separation challenge system.
Kristjansson, Trausti T and Hershey, John R and Olsen, Peder A and Rennie, Steven J and Gopinath, Ramesh A
INTERSPEECH, pp. 155, 2006

Dynamic noise adaptation
S. Rennie, T. Kristjansson, P. Olsen, R. Gopinath
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on, pp. I--I

Super-human multi-talker speech recognition: The IBM 2006 speech separation challenge system
T. Kristjansson, J. Hershey, P. Olsen, S. Rennie, R. Gopinath
Ninth International Conference on Spoken Language Processing, pp. 97--100, 2006


2005

Phaselets of framelets
RA Gopinath, IBMTJWR Center, NY Yorktown …
IEEE Transactions on Signal Processing, 2005 - ieeexplore.ieee.org

Subspace constrained Gaussian mixture models for speech recognition
Scott Axelrod, Vaibhava Goel, Ramesh A Gopinath, Peder A Olsen, Karthik Visweswariah
Speech and Audio Processing, IEEE Transactions on 13(6), 1144--1160, IEEE, 2005


2004

Extended MLLT for Gaussian Mixture Models or Modeling Inverse Covariances by Basis Expansion
P. Olsen and R. A. Gopinath
IEEE Trans. Speech and Audio Processing, 2004

Discriminative Training of Subspace Constrained Gaussian Mixture Models for Speech Recognition
S. Axelrod, V. Goel, R. A. Gopinath, P. A. Olsen & K. Visweswariah
IEEE Trans. Speech & Audio Processing, 2004

Modeling inverse covariance matrices by basis expansion
P.A. Olsen, R.A. Gopinath
Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on, pp. 37--46, IEEE, 2004

Adaptation of front end parameters in a speech recognizer
K Visweswariah, R Gopinath
Eighth International Conference on Spoken Language …, 2004 - ISCA

Task adaptation of acoustic and language models based on large quantities of data
K Visweswariah, R Gopinath, V Goel
Eighth International Conference on Spoken Language Processing, 2004


2003


Lowpass delay filters with flat magnitude and group delay constraints
RA Gopinath
IEEE Transactions on Signal Processing, 2003 - Citeseer

An EM algorithm for convolutive independent component analysis
S Deligne, R Gopinath
Neurocomputing, 2003 - research.ibm.com

Least squared error FIR filters with flat amplitude or group delay constraints
RA Gopinath, IBMTJW Res, NY Yorktown
IEEE Signal Processing Letters, 2003 - ieeexplore.ieee.org

The phaselet transform-an integral redundancy nearly shift-invariant wavelet transform
RA Gopinath
IEEE Transactions on Signal Processing, 2003 - research.ibm.com

Acoustic modeling with mixtures of subspace constrained exponential models
K Visweswariah, S Axelrod, R Gopinath
Eighth European Conference on Speech Communication and …, 2003 - ISCA


Discriminative estimation of subspace precision and mean (SPAM) models.
Vaibhava Goel, Scott Axelrod, Ramesh A Gopinath, Peder A Olsen, Karthik Visweswariah
INTERSPEECH, 2003

Gaussian mixture modeling with volume preserving nonlinear feature space transforms
P.A. Olsen, S. Axelrod, K. Visweswariah, R.A. Gopinath
Automatic Speech Recognition and Understanding, 2003. ASRU'03. 2003 IEEE Workshop on, pp. 285--290

Dimensional reduction, covariance modeling, and computational complexity in ASR systems
Scott Axelrod, Ramesh Gopinath, Peder Olsen, Karthik Visweswariah
Acoustics, Speech, and Signal Processing, 2003. Proceedings.(ICASSP'03). 2003 IEEE International Conference on, pp. I--864

Maximum likelihood training of subspaces for inverse covariance modeling
Karthik Visweswariah, P Olsen, Ramesh Gopinath, Scott Axelrod
Acoustics, Speech, and Signal Processing, 2003. Proceedings.(ICASSP'03). 2003 IEEE International Conference on, pp. I--848


2002

Short-time Gaussianization for robust speaker verification
B Xiang, U V Chaudhari, J Navratil, G N Ramaswamy, R A Gopinath
IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 2002

Large vocabulary conversational speech recognition with the extended maximum likelihood linear transformation (EMLLT) mo
Jing Huang, Vaibhava Goel, Ramesh Gopinath, Brian Kingsbury, Peder A Olsen, Karthik Visweswariah
ICSLP, 2002

Digit recognition in noisy environments via a sequential GMM/SVM system
S Fine, G Saon, R Gopinath
IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP), 2002

Structuring linear transforms for adaptation using training time information
Karthik Visweswariah, V Goel, Ramesh Gopinath
Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on, pp. I--585

Rapid adaptation with linear combinations of rank-one matrices
Vaibhava Goel, Karthik Visweswariah, Ramesh Gopinath
Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on, pp. I--581

Automatic transcription of broadcast news
SS Chen, E. Eide, MJF Gales, RA Gopinath, D. Kanvesky, P. Olsen
Speech Communication 37(1-2), 69--87, Elsevier, 2002


Modeling with a subspace constraint on inverse covariance matrices
S. Axelrod, R. Gopinath, P. Olsen
Seventh International Conference on Spoken Language Processing, 2002

A robust high accuracy speech recognition system for mobile applications
S. Deligne, S. Dharanipragada, R. Gopinath, B. Maison, P. Olsen, H. Printz
Speech and Audio Processing, IEEE Transactions on 10(8), 551--561, IEEE, 2002


2001

The IBM Personal Speech Assistant Acoustics, Speech, and Signal Processing
D Frank, P Gopalakrishnan, R Gopinath, J …
Proceedings.(ICASSP'01). 2001 IEEE International …, 2001

Robust speech recognition with multi-channel codebook dependent cepstral …
S Deligne, R Gopinath, IBMTJWR Center, NY …
IEEE Workshop on Automatic Speech Recognition and …, 2001 - ieeexplore.ieee.org

Multiple linear transforms
NK Goel, RA Gopinath, LSI Logic, MD …
2001 IEEE International Conference on Acoustics, …, 2001 - ieeexplore.ieee.org

Automatic generation and selection of multiple pronunciations fordynamic vocabularies
S Deligne, B Maison, R Gopinath, IBMTJWR …
2001 IEEE International Conference on Acoustics, …, 2001 - ieeexplore.ieee.org

Enhancing GMM Scores using SVM" Hints"
S Fine, J Navratil, R A Gopinath
Seventh European Conference on Speech Communication and Technology, 2001

Robust confidence annotation and rejection for continuous speechrecognition
B Maison, R Gopinath, IBMTJWR Center, Y …
2001 IEEE International Conference on Acoustics, …, 2001 - ieeexplore.ieee.org

The IBM personal speech assistant
L Comerford, D Frank, P Gopalakrishnan, R Gopinath, J Sedivy
IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 2001

A hybrid GMM/SVM approach to speaker identification
S Fine, J Navratil, R Gopinath
IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP), 2001

Extended mllt for gaussian mixture models
P.A. Olsen, R.A. Gopinath
Transactions in Speech and Audio Processing, Citeseer, 2001


Low-resource speech recognition of 500-word vocabularies
S. Deligne, E. Eide, R. Gopinath, D. Kanevsky, B. Maison, P. Olsen, H. Printz, J. Sedivy
Proceedings of the Sixth European Conference on Speech Communication and Technology, 2001


2000

Transformation enhanced multi-grained modeling for text-independent speaker recognition
U V Chaudhari, J Navr{'a}til, S H Maes, R Gopinath
Sixth International Conference on Spoken Language Processing, 2000


Transcriptionof Broadcast News with a Time Constraint: IBMs 10xRT HUB4 system
E Eide, Lidia Mangu, D Kanevsky, Peder A Olsen, S Chen, L …
Proc. ICSLP00, 2000

IBM's 10X real-time broadcast news transcription system used in the 1999 HUB4 evaluation …
Gales, R Gopinath, S Chen, Peder A Olsen, Dimitri Kanevsky, M …
Proc. DARPA Speech Transcription Workshop, 2000

IBM’s 10x Real-time Broadcast News Transcription System Used in the 1999 Hub4 Evaluation
E. Eide, B. Maison, M. Gales, R. Gopinath, S. Chen, P. Olsen, D. Kanevsky, M. Novak, L. Mangu
Proc. DARPA Speech Transcription Workshop, 2000


1999

Model selection in acoustic modeling.
Chen, Scott Saobing and Gopinath, Ramesh A
EUROSPEECH, 1999

Improved speaker segmentation and segments clustering using the bayesian information criterion.
Tritschler, Alain and Gopinath, Ramesh A
Eurospeech, pp. 679--682, 1999

The LVCSR System Used for 1998 Mandarin Broadcast News Transcription Evaluation
XF Guo, WB Zhu, Q Shi, S Chen, R Gopinath
Broadcast News Workshop'99 Proceedings, 1999 - books.google.com

Model selection in acoustic modeling
SS Chen, RA Gopinath
… European Conference on Speech Communication and …, 1999 - ISCA

Improved speaker segmentation and segments clustering using the bayesian information …
A Tritschler, RA Gopinath
… European Conference on Speech Communication and …, 1999 - ISCA

Recent improvements to IBM's speech recognition system forautomatic transcription of broadcast news
Gopinath, D Kanevsky, P Olsen, IBMTJWR Center, Y …
Acoustics, Speech, and Signal Processing, 1999. ICASSP'99. …, 1999 - ieeexplore.ieee.org


1998

Factor analysis invariant to linear transformations of data.
Gopinath, Ramesh A and Ramabhadran, Bhuvana and Dharanipragada, Satya
ICSLP, 1998

Techniques for capturing temporal variations in speech signals with fixed-rate processing
S Dharanipragada, RA Gopinath, BD Rao
Fifth International Conference on Spoken Language …, 1998 - ISCA

Introduction to Wavelets and Wavelet Transforms
BC Sidney, RA Gopinath, HT Guo
1998 - Prentice Hall

Constrained maximum likelihood modeling with Gaussian distributions
RA Gopinath
Proceedings Broadcast News Transcription and …, 1998 - research.ibm.com

Introduction to wavelets and wavelet transforms: a primer
RA Gopinath, H ta Guo
1998 - Prentice-Hall, Englewood Cliffs, NJ

Gaussianization
SS Chen, RA Gopinath
Advances in neural information processing systems, 2001 - MIT; 1998



IBM's LVCSR System for Transcription of Broadcast News Used in the 1997 Hub-4 English Evaluation in …
Acoustics, Speech, and Signal Processing, 1998. ICASSP'98. …
Acoustics, Speech, and Signal Processing, 1998. ICASSP'98. …

Factor Analysis Invariant to Linear Transformations of Data
RA Gopinath, B Ramabhadran, S Dharanipragada
Fifth International Conference on Spoken Language Processing, 1998 - ISCA

IBM's LVCSR System for Transcription of Broadcast News used in the 1997 HUB4 English Evaluation
S. Chen, MJF Gales, PS Gopalakrishnan, RA Gopinath, H. Printz, D. Kanevsky, P. Olsen, L. Polymenakos
Proceedings of the Speech Recognition Workshop, 1998

Transcription of broadcast news-some recent improvements to IBM's LVCSR system
L. Polymenakos, P. Olsen, D. Kanvesky, RA Gopinath, PS Gopalakrishnan, S. Chen
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on, pp. 901--904


1997

New methods in continuous Mandarin speech recognition.
Chen, C Julian and Gopinath, Ramesh A and Monkowski, Michael D and Picheny, Michael A and Shen, Katherine
Eurospeech, 1997

Transcription of broadcast news shows with the IBM large vocabulary speech recognition system
Bakis, Raimo and Chen, Scott and Gopalakrishnan, Ponani and Gopinath, Ramesh and Maes, St{'e}phane and Polymenakos, Lararos and Franz, Martin
Proceedings of the speech recognition workshop, pp. 67--72, 1997

Transcription of broadcast news shows with the IBM large vocabulary recognition system
S Chen, PS Gopalakrishnan, R Gopinath, S …
Proceedings of the DARPA Speech Recognition …, 1997

Transcription of broadcast news-system robustness issues andadaptation techniques
Bakis, S Chen, P Gopalakrishnan, R Gopinath …
1997 IEEE International Conference on Acoustics, …, 1997 - ieeexplore.ieee.org

Transcription of broadcast news shows with the IBM large vocabulary speech recognition system
R Bakis, S Chen, P Gopalakrishnan, R Gopinath, L Polymenakos, M Franz
Proceedings of the speech recognition workshop, 1997

Introduction to wavelets and wavelet transforms: a primer
CS Burrus, RA Gopinath, H Guo, JE Odegard, …
1997 - Prentice Hall Upper Saddle River, NJ

New methods in continuous Mandarin speech recognition
C.J. Chen, R.A. Gopinath, M.D. Monkowski, M.A. Picheny, K. Shen
Proc. Eurospeech, pp. 1543--1546, 1997


1996


Acoustic modelsused inthe IBM system for the ARPA HUB 4 task
PS Gopalakrishnan, R Gopinath, S Maes, M …
Proceedings of the ARPA Speech Recognition …, 1996

Thoughts on least squared-error optimal windows
RA Gopinath, IBMTJWR Center, Y Heights
IEEE Transactions on Signal Processing, 1996 - ieeexplore.ieee.org

Modulated filter banks and wavelets-A general unified theory
RA Gopinath
1996 IEEE International Conference on Acoustics, …, 1996 - ieeexplore.ieee.org

Transcription of radio broadcast news with the IBM large vocabulary speech recognition system
PS Gopalakrishnan, R Gopinath, S Maes, M Padmanabhan, L Polymenakos, H Printz, M Franz
Speech Recognition Workshop: proceedings, February 18-21, 1996: at the Arden Conference Center, Harriman, New York, pp. 72

A Continuous Speaker-Independent Putonghua Dictation System
CJ Chen, RA Gopinath, MD Monkowski, MA Picheny, …
第四届全国人机语音通讯 ..., 1996 - cpfd.cnki.com.cn


1995

Robust speech recognition in noise-Performance of the IBM continuous speech recognizer …
RA Gopinath, MJF Gales, PS Gopalakrishnan, …
Proc. Spoken Lang. Syst. Technol. Workshop, 1995

The IBM continuous speech recognition system on demonstration
R Gopinath
ARPA Spoken Language SystemsTechnology …, 1995

Some results in the theory modulated filter banks and modulated wavelet tight frames
RA Gopinath, CS Burrus
Applied and Computational Harmonic Analysis, 1995 - Elsevier

Factorization approach to unitary time-varying filter bank treesand wavelets
RA Gopinath, CS Burrus, IBMTJWR Center, Y …
IEEE Transactions on Signal Processing, 1995 - ieeexplore.ieee.org

Robust speech recognition in noise---performance of the IBM continuous speech recogniser …
RA Gopinath, MJF Gales, PS Gopalakrishnan, …
1995 - publications.eng.cam.ac.uk

On cosine-modulated wavelet orthonormal bases
RA Gopinath, CS Burrus
IEEE Transactions on Image Processing, 1995 - ieeexplore.ieee.org

The IBM large vocabulary continuous speech recognition system for the ARPA NAB news task
LR Bahl, S Balakrishnan-Aiyer, M Franz, PS Gopalakrishnan, R Gopinath, M Novak, M Padmanabhan, S Roukos
Proceedings of the ARPA Spoken Language Systems Technology Workshop: January 22-25, 1995, Barton Creek Resort Conference Center, Austin, TX, pp. 121

The IBM Large Vocabulary Continuous Speech Recognizer for the ARPA NAB News Task,"
LR Bahl, S Balakrishnan-Aiyer, M Franz, PS Gopalakrishnan, R Gopinath, M Novak, M Padmanabhan, S Roukos
Proc, pp. 121--126, 1995


1994

Unitary FIR filter banks and symmetry
RA Gopinath, CS Burrus, IBMTJWR Center, …
IEEE Transactions on Circuits and Systems II: Analog …, 1994 - ieeexplore.ieee.org

Enhancement of decompressed images at low bit rates
RA Gopinath, M Lang, H Guo, JE Odegard
SPIE Math. Imagaging: Wavelet Applications in Signal …, 1994 - reference.kfupm.edu.sa

On upsampling, downsampling, and rational sampling rate filterbanks
RA Gopinath, CS Burrus
IEEE Transactions on Signal Processing, 1994 - ieeexplore.ieee.org

Wavelet-based post-processing of low bit rate transform codedimages
RA Gopinath, M Lang, H Guo, JE Odegard, …
IEEE International Conference Image Processing, 1994 …, 1994 - ieeexplore.ieee.org

Speckle reduction via wavelet shrinkage with application to synthetic-aperture-radar-based …
H Guo, JE Odegard, M Lang, RA Gopinath, IW …
Proceedings of SPIE, 1994 - link.aip.org

Optimal wavelet representation of signals and the wavelet samplingtheorem
RA Gopinath, JE Odegard, CS Burrus
IEEE Transactions on Circuits and Systems II: Analog …, 1994 - ieeexplore.ieee.org

Wavelet based speckle reduction with application to SAR based ATD/R
H Guo, JE Odegard, M Lang, RA Gopinath, IW …
IEEE International Conference Image Processing, 1994 …, 1994 - ieeexplore.ieee.org


1993


Theory of modulated filter banks and modulated wavelet tight frames
RA Gopinath, CS Burrus
1993 IEEE International Conference on Acoustics, …, 1993 - ieeexplore.ieee.org

Wavelet transforms and filter banks
RA Gopinath, CS Burrus
Academic Press Wavelet Analysis And Its Applications …, 1993 - portal.acm.org

Theory of regular M-band wavelet bases
P Steffen, PN Heller, RA Gopinath, CS Burrus
IEEE Transactions on Signal Processing, 1993 - ieeexplore.ieee.org


1992

Optimal wavelets for signal decomposition and the existence ofscale-limited signals
JE Odegard, RA Gopinath, CS Burrus
1992 IEEE International Conference on Acoustics, …, 1992 - ieeexplore.ieee.org

On the moments of the scaling function 0
RA Gopinath, CS Burrus
1992 IEEE International Symposium on Circuits and …, 1992 - ieeexplore.ieee.org

Least squared error FIR filter design with transition bands
CS Burrus, AW Soewito, RA Gopinath
IEEE Transactions on Signal Processing, 1992 - ieeexplore.ieee.org

Wavelets and filter banks
RA Gopinath, CS Burrus
Wavelets: A Tutorial in Theory and Applications, 1992


Year Unknown

Olsen. P.(1999). Recent Improvements to IBM's Speech Recognition System for Automatic …
SS Chen, EM Eide, MJF Gales, RA Gopinath, …
Proceedings of the International Conference on …, 0


Gaussianization
RA Gopinath
IMA Workshop: Mathematical Foundations of Speech … - research.ibm.com, 0

Acoustic models used in the IBM system for the ARPA HUB 4 task
PS Gopalakrishnan, R Gopinath, S Maes, M …
Proceedings of the Speech Recognition Workshop, 0

Wavelets and wavelet transforms
CS Burrus, RA Gopinath, H Guo
rice university, houston edition, 0

Efficient hierarchical labeler algorithm for Gaussian likelihoods computation in resource …
M Novak, RA Gopinath, J Sedivy
… on-line at: http://www. research. ibm. com/people/r/rameshg … - Citeseer, 0

Feature adaptation based on Gaussian posteriors
S Kozat, K Visweswariah, R Gopinath, IBMTJWR …
Proc. ICASSP - domino.research.ibm.com, 0




Technical Areas