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Research Output 1900 2019

Filter
Conference contribution
1998

Sinusoidal speech coding at 2.4 kbps using an improved phase matching algorithm

Ahmadi, S. & Spanias, A., 1998, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Farques, M. P. & Hippenstiel, R. D. (eds.). IEEE Comp Soc, Vol. 2. p. 1075-1079 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech coding
Phase matching
Vector quantization
Interpolation
Sampling
1997
12 Citations (Scopus)

HMM-based speech enhancement using harmonic modeling

Deisher, M. E. & Spanias, A., 1997, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Anon (ed.). IEEE, Vol. 2. p. 1175-1178 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech enhancement
Hidden Markov models
harmonics
augmentation
Speech intelligibility

Low rate sinusoidal coding of speech using an improved phase matching algorithm

Ahmadi, S. & Spanias, A., 1997, IEEE Workshop on Speech Coding for Telecommunications Proceedings. Anon (ed.). Piscataway, NJ, United States: IEEE, p. 35-36 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Phase matching
Poles
Sampling
Compensation and Redress

New algorithms for sinusoidal speech coding at low bit rates

Ahmadi, S. & Spanias, A., 1997, IEEE International Conference on Personal Wireless Communications. Piscataway, NJ, United States: IEEE, p. 57-61 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech coding
Phase matching
Vector quantization
Interpolation
Sampling
2 Citations (Scopus)

New sinusoidal phase modeling algorithm

Ahmadi, S. & Spanias, A., 1997, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Anon (ed.). IEEE, Vol. 3. p. 1675-1678 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

linear prediction
coding
sampling
Sampling
synthesis
2 Citations (Scopus)

New techniques for sinusoidal coding of speech at 2400 bps

Ahmadi, S. & Spanias, A., 1997, Conference Record of the Asilomar Conference on Signals, Systems and Computers. IEEE, Vol. 1. p. 770-774 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech intelligibility
Vector quantization
Computational efficiency
Rats
Interpolation
43 Citations (Scopus)

Review of algorithms for perceptual coding of digital audio signals

Painter, T. & Spanias, A., 1997, International Conference on Digital Signal Processing, DSP. Anon (ed.). Piscataway, NJ, United States: IEEE, Vol. 1. p. 179-208 30 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Motion pictures
Signal analysis
Frequency modulation
Standardization
1996
2 Citations (Scopus)

Adaptive modified covariance algorithm for spectral analysis

Kitsios, K., Spanias, A., Welfert, B. & Loizou, P., 1996, IEEE Signal Processing Workshop on Statistical Signal and Array Processing, SSAP. Anon (ed.). Los Alamitos, CA, United States: IEEE, p. 56-59 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spectrum analysis
Covariance matrix
Mean square error
1 Citation (Scopus)

MATLAB software tool for the introduction of speech coding fundamentals in a DSP course

Painter, E. & Spanias, A., 1996, Proceedings - Frontiers in Education Conference. Anon (ed.). IEEE, Vol. 2. p. 603-608 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech coding
MATLAB
Students
Speech analysis
Global system for mobile communications

MATLAB software tool for the introduction of speech coding fundamentals in a DSP course

Painter, E. & Spanias, A., 1996, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. IEEE, Vol. 2. p. 1133-1136 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech coding
software development tools
MATLAB
coding
Global system for mobile communications
1995
5 Citations (Scopus)

Gradient eigenspace projections for adaptive filtering

Gopalan Nair, N. & Spanias, A., 1995, Midwest Symposium on Circuits and Systems. Piscataway, NJ, United States: IEEE, Vol. 1. p. 259-263 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adaptive filtering
Autocorrelation
Eigenvalues and eigenfunctions
Computational complexity
1994
3 Citations (Scopus)

Context-dependent modeling in alphabet recognition

Loizou, P. C. & Spanias, A., 1994, Proceedings - IEEE International Symposium on Circuits and Systems. IEEE, Vol. 2. p. 189-192 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech analysis
Hidden Markov models
Acoustics
2 Citations (Scopus)

Fast adaptive algorithms using eigenspace projections

Nair, N. G. & Spanias, A., Jan 1 1994, Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994. IEEE Computer Society, p. 1520-1524 5 p. 471712. (Conference Record - Asilomar Conference on Signals, Systems and Computers; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adaptive algorithms
Autocorrelation
Eigenvalues and eigenfunctions
Computational complexity

High sample rate architectures for block adaptive filters

Karkada, S., Chakrabarti, C. & Spanias, A., 1994, Proceedings - IEEE International Symposium on Circuits and Systems. IEEE, Vol. 4. p. 131-134 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adaptive filters

Speech enhancement using a state-based transform model

Deisher, M. E. & Spanias, A., Jan 1 1994, Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994. IEEE Computer Society, p. 1242-1246 5 p. 471657. (Conference Record - Asilomar Conference on Signals, Systems and Computers; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech enhancement
Hidden Markov models
1993
4 Citations (Scopus)

Speech processing using higher order statistics

Gdoura, I. J., Loizou, P. & Spanias, A., 1993, Proceedings - IEEE International Symposium on Circuits and Systems. Piscataway, NJ, United States: Publ by IEEE, Vol. 1. p. 160-163 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Higher order statistics
Speech processing
Statistics
1992

Adaptive FIR filtering based on bounded error constraints

Tsakalis, K., Deisher, M. & Spanias, A., Jan 1 1992, Conference Record of the 26th Asilomar Conference on Signals, Systems and Computers, ACSSC 1992. IEEE Computer Society, p. 15-19 5 p. 269266. (Conference Record - Asilomar Conference on Signals, Systems and Computers).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adaptive algorithms
1 Citation (Scopus)

Autoregressive spectral modeling of Motor Unit Action Potentials: Preliminary findings

Elia, A., Pattichis, C., Fincham, W., Spanias, A. & Middleton, L., Jan 1 1992, Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992. Morucci, J. P., Coatrieux, J. L., Laxminarayan, S. & Plonsey, R. (eds.). Institute of Electrical and Electronics Engineers Inc., p. 1465-1466 2 p. 5761878. (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS; vol. 4).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Action Potentials
Muscle
Muscles
3 Citations (Scopus)

Block time and frequency domain modified covariance algorithms

Spanias, A., Lim, G., Loizou, P. & Deisher, M., 1992, ICASSP 1992 - 1992 International Conference on Acoustics, Speech, and Signal Processing. Institute of Electrical and Electronics Engineers Inc., Vol. 5. p. 529-532 4 p. 226566

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Computational complexity
1991
3 Citations (Scopus)

Adaptive noise cancellation using fast optimum block algorithms

Deisher, M. E. & Spanias, A., 1991, Proceedings - IEEE International Symposium on Circuits and Systems. Publ by IEEE, Vol. 1. p. 698-701 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Convolution
Fast Fourier transforms
Adaptive algorithms
Computational complexity
Engines

Low rate speech representation by vector quantizing transform components

Loizou, P. C. & Spanias, A., 1991, Proceedings - IEEE International Symposium on Circuits and Systems. Publ by IEEE, Vol. 1. p. 320-323 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fast Fourier transforms
Frequency bands
Mathematical transformations
5 Citations (Scopus)

Real-time implementation of a frequency-domain adaptive filter on a fixed-point signal processor

Deisher, M. E. & Spanias, A., 1991, Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing. Piscataway, NJ, United States: Publ by IEEE, Vol. 3. p. 2013-2016 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fixed point arithmetic
adaptive filters
Adaptive filters
Adaptive algorithms
Fast Fourier transforms
2 Citations (Scopus)

Speech coding and speech recognition technologies: A review

Spanias, A. & Wu, F. H., 1991, Proceedings - IEEE International Symposium on Circuits and Systems. Publ by IEEE, Vol. 1. p. 572-577 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech coding
Speech recognition
Vocoders
Differential pulse code modulation
Speech processing
1 Citation (Scopus)

Vector quantization of principal spectral components for speech coding at 4800 BPS

Loizou, P. C. & Spanias, A., 1991, Conference Record - Asilomar Conference on Circuits, Systems & Computers. Publ by Maple Press, Inc, Vol. 2. p. 654-658 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech coding
Vector quantization
Signal to noise ratio
Mathematical transformations
3 Citations (Scopus)

Vector quantization of transform components for speech coding at 1200 bps

Loizou, P. C. & Spanias, A., 1991, Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing. Anon (ed.). Piscataway, NJ, United States: Publ by IEEE, Vol. 1. p. 245-248 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech coding
vector quantization
Vector quantization
coding
harmonics
1990
4 Citations (Scopus)

A hybrid model for speech synthesis

Spanias, A., 1990, Proceedings - IEEE International Symposium on Circuits and Systems. Publ by IEEE, Vol. 2. p. 1521-1524 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech synthesis
Fourier transforms
Vocoders
Speech analysis

A least-squares pole-zero algorithm in the frequency and Walsh domains with applications to speech representation

Mikhael, W. B. & Spanias, A., 1990, Proceedings - IEEE International Symposium on Circuits and Systems. Publ by IEEE, Vol. 2. p. 1331-1334 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Poles
Discrete Fourier transforms

An adaptive bit allocation scheme for coding of speech signals using partial sets of orthogonal functions

Spanias, A. & Mikhael, W. B., 1990, Midwest Symposium on Circuits and Systems. Piscataway, NJ, United States: Publ by IEEE, p. 598-601 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Orthogonal functions
Poles
Signal reconstruction
Discrete Fourier transforms

A pole-zero adaptive algorithm for speech processing

Spanias, A., 1990, Conference Proceedings - Annual Phoenix Conference. Piscataway, NJ, United States: Publ by IEEE, p. 894 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech processing
Adaptive algorithms
Poles
Identification (control systems)
2 Citations (Scopus)

Seismic data compression

Jonsson, S. B. & Spanias, A., 1990, Conference Proceedings - Annual Phoenix Conference. Piscataway, NJ, United States: Publ by IEEE, p. 276-279 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Walsh transforms
Hadamard transforms
Discrete cosine transforms
Data compression
Discrete Fourier transforms
1 Citation (Scopus)

Transform coding algorithms for seismic data compression

Spanias, A., Jonsson, S. B. & Stearns, S. D., 1990, Proceedings - IEEE International Symposium on Circuits and Systems. Publ by IEEE, Vol. 2. p. 1573-1576 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Walsh transforms
Hadamard transforms
Discrete cosine transforms
Data compression
Discrete Fourier transforms
1989

Direct coding of a class of non-stationary signals based on mixed transforms

Mikhael, W. B. & Spanias, A., 1989, Proceedings - IEEE International Symposium on Circuits and Systems. Anon (ed.). Publ by IEEE, Vol. 1. p. 280-283 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Walsh transforms
Hadamard transforms
Discrete Fourier transforms

Fourier-Walsh representation of a class of non-stationary signals

Mikhael, W. B. & Spanias, A., 1989, Proceedings - IEEE International Symposium on Circuits and Systems. Anon (ed.). Publ by IEEE, Vol. 3. p. 1768-1771 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Discrete Fourier transforms
Walsh transforms
Hadamard transforms
1988
3 Citations (Scopus)

Fast frequency domain implementation of a block IIR filter with applications

Mikhael, W. B., Spanias, A. & Wu, F. H., 1988, Proceedings - IEEE International Symposium on Circuits and Systems. Piscataway, NJ, United States: Publ by IEEE, Vol. 1. p. 285-288 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

IIR filters
Poles and zeros
Impulse response
Identification (control systems)
2 Citations (Scopus)

Reduced bit-rate representation of speech using mixed Fourier-Walsh transforms

Mikhael, W. B. & Spanias, A., 1988, Conference Record - Asilomar Conference on Circuits, Systems & Computers. Chen, R. R. (ed.). Publ by Maple Press, Inc, Vol. 1. p. 366-370 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Walsh transforms
Discrete Fourier transforms
Hadamard transforms
Fourier transforms
1987
1 Citation (Scopus)

IMPLEMENTATION OF THE OPTIMUM BLOCK ADAPTIVE ALGORITHM IN THE FREQUENCY-DOMAIN.

Spanias, A. & Mikhael, W. B., 1987, Proceedings - IEEE International Symposium on Circuits and Systems. IEEE, p. 426-429 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adaptive algorithms
1986
4 Citations (Scopus)

PERFORMANCE ENHANCEMENT OF THE FREQUENCY-DOMAIN LMS ADAPTIVE ALGORITHM.

Mikhael, W. B. & Spanias, A., 1986, Proceedings - IEEE International Symposium on Circuits and Systems. IEEE, p. 349-352 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adaptive algorithms
Fast Fourier transforms
Processing
1985

ADAPTIVE POLE-ZERO PREDICTOR.

Mikhael, W. B., Spanias, A. & Wu, F. H., 1985, Proceedings - IEEE International Symposium on Circuits and Systems. IEEE, p. 1107-1110 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Poles
Computer simulation
Processing

ARMA MODELLING BY CASCADING A LINEAR-PREDICTOR AND A POLE-ZERO STRUCTURE.

Mikhael, W. B., Spanias, A. & Wu, F., 1985, Conference Record - Asilomar Conference on Circuits, Systems & Computers. Kirk, D. E. (ed.). New York, NY, USA: IEEE, p. 53-60 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adaptive algorithms
Poles
1 Citation (Scopus)

TWO STAGE APPROACH FOR ADAPTIVE PREDICTION OF ARMA PROCESSES.

Mikhael, W. B., Spanias, A. & Wu, F., 1985, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. IEEE, p. 1505-1508 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

autoregressive moving average
Adaptive algorithms
Poles
predictions
poles