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Proceedings of the6th NORDIC SIGNAL PROCESSING SYMPOSIUM – NORSIG 2004June 9 - 11, 2004Espoo, Finland |
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Helsinki University of Technology Signal Processing Laboratory Report Series
Report 46
Proceedings of the 6th Nordic Signal Processing Symposium – NORSIG 2004
Espoo, Finland, June 9 – 11, 2004
Jarno M. A. Tanskanen (Editor)
Copyright ©2004 the 6th Nordic Signal Processing Symposium (NORSIG 2004)
Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from NORSIG 2004. Authors’ rights are stated in the NORSIG 2004 Copyright Transfer Agreement.
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NORSIG 2004
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Cover art ©2004 Tuula Falk
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IEEE Catalog Number: 04EX856 (Print Version)
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ISBN: 951-22-7065-X (Print Version)
ISBN: 951-22-7031-5 (CD-ROM Version)
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http://signal.hut.fi/publications/norsig2004/)
ISSN: 1458-6401
For technical questions, please contact NORSIG 2004 (see above) or email: tanskanen@iki.fi.
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Table of Contents
Front Cover of the
Proceedings (pdf)
Title Page (html / pdf)
Copyright Page (html /
pdf)
Foreword (html / pdf)
NORSIG 2004 Organization (html /
pdf)
Organizer and Sponsor Information (html /
pdf)
Table of Contents (html /
pdf)
List of Sessions
Technical Papers
Author Index (html /
pdf)
Announcement of
NORSIG–2006 (pdf)
List of Sessions
Tutorial on
SPEECHFIND
Audio Signal Processing I: Speech Enhancement and Musical Instruments
Audio Signal
Processing II: Speech Recognition
Audio Signal Processing III: Speech Detection and Classification
Biomedical Signal
Measurement and Analysis I
Biomedical Signal
Measurement and Analysis II
Communications I:
Coding and Detection
Communications II:
Control and Interference I
Communications II:
Control and Interference II
Communications III:
Performance Analysis
Communications IV:
Amplifiers and Coding
DSP Education
Fast DSP Algorithms
Filters and Filter Design I
Filters and Filter Design II
Image
Processing I: Compression, Noise Reduction, and Authentication
Image
Processing II: Pattern Recognition
Medical Image Processing I
Medical Image Processing II
Nonlinear Signal Processing
Statistical Signal Processing I
Statistical Signal Processing II
VLSI for Signal Processing
Wavelets and Filter Banks
Technical Papers
Tutorial
SPEECHFIND: Spoken Document
Retrieval for a National Gallery of the Spoken Word
Hansen, John, HL,
University of Colorado, USA
Huang, Rongqing, University of Colorado, USA
Mangalath, Praful, University of Colorado, USA
Zhou, Bowen, University of Colorado, USA
Seadle, Michael, Michigan State University, USA
Deller, John, R, Jr, Michigan State University, USA
Medical Image Processing I
Automatic Registration of
Spectrophotometric Retinal Images
Halldorsson, Gisli, H,
University of Iceland, Iceland
Benediktsson, Jon, A, University of Iceland, Iceland
Zoega, Gunnar, M,
University Hospital of
Iceland, Iceland
Eysteinsson, Thor, University of Iceland,
Iceland
Stefansson, Einar, University Hospital of
Iceland, Iceland
Color Enhancement and Edge Detection
for Confocal Microscopy Fluorescent Images
Albán, Edisson, R, Tampere University of
Technology, Finland
Leveelahti, Lotta, University of Turku,
Finland
Heiskanen, Kaisa, M, University of Turku,
Finland
Ruotsalainen, Ulla, Tampere University of
Technology, Finland
Image Processing Verification
Tool-IPVT
Heric, Dusan, University of Maribor, Slovenia
Potocnik, Bozidar, University of Maribor,
Slovenia
Surface Smoothing Based on a Sphere
Shape Model
Tohka, Jussi,
Tampere University of
Technology, Finland
Filters and Filter Design I
Properties of the Multiplicative
General Parameter Adaptive Algorithm
Vainio, Olli,
Tampere University of
Technology, Finland
Ovaska, Seppo, J,
Helsinki University of
Technology, Finland
Designing Multiplicative
General Parameter Filters Using Multipopulation Genetic Algorithm
Martikainen, Jarno, Helsinki University of
Technology, Finland
Ovaska, Seppo, J,
Helsinki University of
Technology, Finland
Design of Minimum Phase Digital
IIR Filters by Using Genetic Algorithm
Karaboga, Nurhan, Erciyes University,
Turkey
Cetinkaya, Bahadir, Erciyes University,
Turkey
Least Squares Optimization of
2-D IIR Filters
Dumitrescu, Bogdan, Tampere University of Technology, Finland
Nonlinear Signal Processing
MLP and SVM Networks – a
Comparative Study
Osowski, Stanislaw, Warsaw University of
Technology, and Military University of Technology, Poland
Siwek, Krzysztof,
Warsaw University of
Technology, Poland
Markiewicz, Tomasz, Warsaw University of
Technology, Poland
Management of Uncertainty within
Estimation in Dynamical Context, Application to MEMS
Baili, Hana,
École Supérieure d’Électricité,
France
Juillard, Jérôme,
École Supérieure d’Électricité,
France
An Extension of Bussgang's Theory
to Complex-Valued Signals
Ermolova, Natalia,
Y, Helsinki University
of Technology, Finland
Häggman, Sven-Gustav, Helsinki University of
Technology, Finland
Filters and Filter Design II
Comparison of Continuous- and
Discrete-Time Modelling of Polynomial-Based Interpolation Filters
Lehtinen, Vesa, Tampere
University of Technology, Finland
Babic, Djordje,
Tampere University of
Technology, Finland
Renfors, Markku,
Tampere University of
Technology, Finland
On the Use of Multiple Constant
Multiplication in Polyphase FIR Filters and Filter Banks
Gustafsson, Oscar, Linköping University,
Sweden
Dempster, Andrew, G, University of
Westminster, United Kingdom
Kernel Using Piecewise nth
Polynomials for Rate Converter
Mori, Yukio,
Salesian Polytechnic, Japan
Aikawa, Naoyuki,
Nihon University, Japan
Medical Image Processing II
Evaluation of Noise in DNA
Fingerprint Images Produced by Hybridization Techniques
Akbari, Akbar, University of Oslo,
Norway
Albregtsen, Fritz, University of Oslo,
Norway
Compression Gains in 2D MRCP
Biliary Tree Modeling
Logeswaran, Rajasvaran,
Multimedia University, Malaysia
Bone Segmentation WA-algorithm
Heric, Dusan, University of Maribor,
Slovenia
Potocnik, Bozidar, University of Maribor,
Slovenia
Comparison of Pattern
Classification Methods in Segmentation of Dynamic PET Brain Images
Koivistoinen, Heidi, Tampere University of Technology, Finland
Tohka, Jussi,
Tampere University of
Technology, Finland
Ruotsalainen, Ulla, Tampere University of
Technology, Finland
Noise Models for Sinusoidal
Trajectories Composing Sinogram Data in Positron Emission Tomography
Krestyannikov,
Evgeny, Tampere
University of Technology, Finland
Happonen, Antti,
Tampere University of
Technology, Finland
Ruotsalainen, Ulla, Tampere University of
Technology, Finland
Wavelets and Filter Banks
General Formulation for Arbitrary
Length Cosine Modulated Filter Banks
Thomas, Tigi, K, National Institute of Technology, India
Hameed, Abdul, National Institute of Technology, India
Elias, Elizabeth, National Institute of
Technology, India
Shift Variance and Cyclostationarity
in Multirate Filter Banks
Aach, Til,
University of Lübeck, Germany
Measuring Shiftability of
Frames of Regular Translates
Sampo, Jouni, Lappeenranta University of Technology, Finland
Kamarainen, Joni-Kristian,
Lappeenranta University of Technology, Finland
Heiliö, Matti, Lappeenranta University of Technology, Finland
Kälviäinen, Heikki, Lappeenranta
University of Technology, Finland
2D Wavelet Transforms with a
Spatially Adaptive 2D Low Pass Filter
Abhayaratne, GCK,
Queen Mary University of London,
United Kingdom
Wavelet-Packet Subband Structures in
the Evolution of the JPEG 2000 Standard
Reisecker, Markus, Salzburg University, Austria
Uhl, Andreas, Salzburg
University, Austria
Image Processing I: Compression, Noise Reduction, and Authentication
Predictive Differential Modulation
for CFA Compression
Bruna, Arcangelo, R, STMicroelectronics, Italy
Vella, Filippo,
STMicroelectronics, Italy
Buemi, Antonio,
STMicroelectronics, Italy
Curti, Salvatore,
STMicroelectronics, Italy
Support Vector Machines and
Quad-Trees Applied to Image Compression
Saavedra, Ernesto, University of Applied Sciences South Westphalia - Soest Campus, Germany
Grauel, Adolf,
University of Applied
Sciences South Westphalia - Soest Campus, Germany
Morton, Danny,
Bolton Institute of Higher
Education, England
Joint Gaussian Noise Reduction and
Defects Correction in Raw Digital Images
Bosco, Angelo, STMicroelectronics, Italy
Bruna, Arcangelo, STMicroelectronics,
Italy
Santoro, Gaetano, STMicroelectronics, Italy
Vivirito, Paolo,
STMicroelectronics, Italy
(Printing tip)
Image Denoising by Combined
Quincunx and Separable Wavelet-Domain Wiener Filtering
Vrankic, Miroslav, University of Zagreb,
Croatia
Egiazarian, Karen, Tampere University of
Technology, Finland
Gotchev, Atanas,
Tampere University of
Technology, Finland
Time Invariant Curvelet
Denoising
Saevarsson, Birgir, B,
University of Iceland, Iceland
Sveinsson, Johannes, R, University of Iceland,
Iceland
Benediktsson, Jon, A, University of Iceland,
Iceland
Robust Authentication of the JPEG 2000
Bitstream
Norcen, Roland, Salzburg University,
Austria
Uhl, Andreas,
Salzburg University, Austria
VLSI for Signal Processing
Implementation of Bit-Level
Pipelined Digit-Serial Multipliers
Landernäs, Krister, Mälardalen University, Sweden
Holmberg, Johnny,
Mälardalen University, Sweden
Gustafsson, Oscar, Linköping University,
Sweden
Pipelining of Digit-Serial
Processing Elements in Recursive Digital Filters
Karlsson, Magnus, University of Kalmar, Sweden
Vesterbacka, Mark, Linköping University,
Sweden
Kulesza, Wlodek,
University of Kalmar, Sweden
Deep Sub-Micron Bus Invert
Coding
Lindkvist, Tina, Linköpings Universitet,
Sweden
Löfvenberg, Jacob,
Linköpings Universitet, Sweden
Gustafsson, Oscar, Linköpings Universitet,
Sweden
(Printing tip)
A Dynamic Element Matching Technique
for Flash Analog-to-Digital Converters
Säll, Erik,
Linkoping University, Sweden
Andersson, Ola, K, Linköping University, Sweden
Vesterbacka, Mark,
Linköping University, Sweden
Low-Complexity Constant
Coefficient Matrix Multiplication Using a Minimum Spanning Tree Approach
Gustafsson, Oscar, Linköping University,
Sweden
Ohlsson, Henrik,
Linköping University, Sweden
Wanhammar, Lars,
Linköping University, Sweden
Biomedical Signal Measurement and Analysis I
Multifrequency Bio-Impedance
Measurement: Undersampling Approach
Märtens, Olev, Tallinn
Technical University, Estonia
Min, Mart, Tallinn
Technical University, Estonia
Minimum Spanning Tree Clustering
of EEG Signals
Päivinen, Niina, University of
Kuopio, Finland
Grönfors, Tapio,
University of Kuopio, Finland
Independent Component Analysis
Applied to Multielectrode Field Potential Measurements
Tanskanen, Jarno, MA,
University of Kuopio, Finland
Mikkonen, Jarno, E,
University of Kuopio, Finland
Penttonen, Markku,
University of Kuopio, Finland
Disease Detection Technique Using
the Principal Orthogonal Decomposition on DNA Microarray Data
Peterson, David, California State
University, USA
Lee, Charles, H,
California State University,
USA
Communications I: Coding and Detection
Multi-Weight Multi-Length Strict
Optical Orthogonal Codes
Tarhuni, Naser, G, Helsinki University of
Technology, Finland
Korhonen, Timo, O, Helsinki University of
Technology, Finland
Decoding of Punctured Turbo Codes
Using Dual Codes
Ruttik, Kalle, Helsinki University of
Technology, Finland
Receiver Concepts for Differential
Space-Time Modulation Schemes over Flat Time-Varying Channels
Chen, Xiao-Ming, University of Kiel,
Germany
Hoeher, Peter, A, University of Kiel,
Germany
Soft Output Detection Using Path
Detector for Multiple Antennas
Ramírez, Enrique, Helsinki University of
Technology, Finland
Nefedov, Nikolai, Nokia Research Center,
and Helsinki University of Technology, Finland
Biomedical Signal Measurement and Analysis II
Lightweight Embedded System for
Acquiring Simultaneous Electromyogenic Activity and Movement Data
(Function-EMG)
Sihvonen, Teuvo, Kuopio University
Hospital & Mikkeli Central Hospital, Finland
Sihvonen, Pekka,
Savonia Polytechnic, Finland
Kuusrainen, Sami,
Savonia Polytechnic, Finland
Grönfors, Tapio,
University of Kuopio, Finland
A Novel Wavelet Based
Technique for Detection and De-Noising of Ocular Artifact in Normal and
Epileptic Electroencephalogram
Venkataramanan, S, Indian
Institute of Technology (IIT) Guwahati, India
Kalpakam, NV, Indian
Institute of Technology (IIT) Guwahati, India
Sahambi, JS, Indian
Institute of Technology (IIT) Guwahati, India
Multiscale Detection of
Transiently Evoked Otoacoustic Emissions
Marozas, Vaidotas, Kaunas University of
Technology, Lithuania
Sörnmo, Leif,
Lund University, Sweden
Janusauskas, Arturas, Kaunas University of
Technology, Lithuania
Lukosevicius, Arunas, Kaunas University of
Technology, Lithuania
Deriving a Wavelet Based Scale from
the Localized Response of the Human Cochlea
Karam, Jalal, R, Arab Open University,
Beirut, Lebanon
Protein is Compressible
Hategan, Andrea, Tampere University of
Technology, Finland
Tabus, Ioan,
Tampere University of
Technology, Finland
Audio Signal Processing I: Speech Enhancement and Musical Instruments
Pitch Synchronous Addition and
Extension for Linear Predictive Analysis of Noisy Speech
Shimamura, Tetsuya, Saitama University,
Japan
Inter-Frequency Dependency In MMSE
Speech Enhancement
Li, Chunjian, Aalborg University,
Denmark
Andersen, Søren, V, Aalborg University,
Denmark
A Hybrid Speech Enhancement System
Employing Blind Source Separation and Adaptive Noise Cancellation
Low, Siow Yong, Western Australian Telecommunications Research Institute (WATRI), Australia
Nordholm, Sven,
Western Australian
Telecommunications Research Institute (WATRI), Australia
Decomposition and Modification of
Musical Instrument Sounds Using a Fractional Delay Allpass Filter
Välimäki, Vesa, Helsinki University of
Technology, Finland
Ilmoniemi, Minna, Helsinki University of Technology, and University of Helsinki, Finland
Huotilainen, Minna,
University of Helsinki, Finland
Modal Synthesis of Wind Chime
Sounds with Stochastic Event Triggering
Lukkari, Teemu, Helsinki University of Technology, Finland
Välimäki, Vesa, Helsinki University of Technology, Finland
Communications II: Control and Interference I
Domain Selective Interference
Excision and Energy Detection of Direct Sequence Signals
Lehtomäki, Janne,
J, University of Oulu,
Finland
Vartiainen, Johanna, University of Oulu,
Finland
Saarnisaari, Harri, University of Oulu,
Finland
Selection Process of a
Transform Selective Interference Suppression Algorithm
Vartiainen,
Johanna, University of
Oulu, Finland
Aromaa, Sami,
University of Oulu, Finland
Saarnisaari, Harri, University of Oulu,
Finland
Juntti, Markku,
University of Oulu, Finland
Reducing Impulsive Noise in DSL
Systems - Robustness and Delay
Gregorio, FH, Helsinki University of
Technology, Finland
Cousseau, JE, Universidad Nacional del Sur, Argentina
Figueroa, JL,
Universidad Nacional del Sur,
Argentina
Interference Suppression in MIMO
HSDPA Communication
Ylioinas, Jari, University of Oulu,
Finland
Hooli, Kari,
University of Oulu, Finland
Kiiskilä, Kai,
University of Oulu, Finland
Juntti, Markku,
University of Oulu, Finland
Fast DSP Algorithms
A New Fast Level Set Method
Ganoun, Ali,
University of Orleans, and
University of Garyounis, France
Canals, Raphael,
University of Orleans, France
A New, Fast and Low-Cost FFT
Estimation Scheme of Signals Using 1-Bit Non-Subtractive Dithered Quantization
Cheded, L,
King Fahd University of
Petroleum and Minerals, Saudi Arabia
Akhtar, S,
King Fahd University of Petroleum
and Minerals, Saudi Arabia
DSP Education
Integrating the Courses of
Digital Electronics and Signal Processing by Median Filters
Koljonen, Janne, University of Vaasa,
Finland
Alander, Jarmo, T, University of Vaasa,
Finland
Distance Learning in
Communications Signal Processing Using MATLAB Web Server
Yan, Peng,
Tampere University of
Technology, Finland
Valkama, Mikko,
Tampere University of
Technology, Finland
Renfors, Markku,
Tampere University of
Technology, Finland
Communications II: Control and Interference II
PAPR Reduction of OFDM Signal Using
Turbo Coding and Selective Mapping
Abouda, Abdulla, A, Helsinki University of
Technology, Finland
Application of the Generalized
Predictive Control Method in Closed-Loop Power Control of CDMA Cellular
Communication Systems
Rintamäki, Matti, Helsinki University of
Technology, Finland
Koivo, Heikki,
Helsinki University of
Technology, Finland
Hartimo, Iiro,
Helsinki University of
Technology, Finland
Distributed Minimum Outage
Removal Algorithm for Multi-Rate CDMA Wireless Communication Systems
Elmusrati,
Mohammed, Helsinki
University of Technology, Finland
Tarhuni, Nasser,
Helsinki University of
Technology, Finland
Jäntti, Riku,
Helsinki University of
Technology, Finland
Koivo, Heikki,
Helsinki University of
Technology, Finland
Statistical Signal Processing I
Simultaneous Maximum Likelihood
Estimation of Time Delay and Time Scaling
Carlson, Johan, E, Luleĺ University of
Technology, Sweden
Sjöberg, Frank,
Luleĺ University of
Technology, Sweden
Quantization and Dynamic Range
Effects on the Energy Detection
Koivu, Sami,
University of Oulu, Finland
Saarnisaari, Harri, University of Oulu,
Finland
Juntti, Markku,
University of Oulu, Finland
An Adaptive Bayesian Wavelet
Thresholding Approach to Multifractal Signal Denoising
Seghouane, Abd-Krim, Institut National de
Recherche en Informatique et en Automatique, France
An Easily Implementable Sampling
Procedure for Certain Fractal and Other Non-Band Limited Signals
Lafon, S,
INRIA, France
Véhél, J, Lévy, INRIA, France
Communications III: Performance Analysis
Performance Analysis of CCK
Modulation under Multipath Fading Channel
Liu, Shao-bo,
Zhejiang University,
China
Huang, Aiping,
Zhejiang University, China
Zhang, Zhao-yang, Zhejiang University, China
Zhang, Zhijian, Beijing University of Post and Telecommunications, China
On the Characteristics of MIMO Mutual
Information at High SNR
Salo, J, Helsinki
University of Technology, Finland
Suvikunnas, P, Helsinki University of Technology, Finland
El-Sallabi, HM, Helsinki University of Technology, Finland
Vainikainen, P,
Helsinki University of
Technology, Finland
Performance Analysis of Parallel
Interference Cancellation Detector in Downlink MC-CDMA Systems
Duan, Zhanyun, Tampere University of
Technology, Finland
Hidalgo Stitz, Tobias, Tampere University of
Technology, Finland
Valkama, Mikko,
Tampere University of
Technology, Finland
Renfors, Markku,
Tampere University of
Technology, Finland
An Upper Bound on the Ergodic Mutual
Information of Ricean Fading MIMO Channels
Salo, Jari,
Helsinki University of
Technology, Finland
Mikas, Filip,
Czech Technical University of
Prague, Czech Republic
Vainikainen, Pertti, Helsinki University of
Technology, Finland
Statistical Signal Processing II
Information Theoretic Clustering:
A Unifying Review of Three Recent Algorithms
Jenssen, Robert, University of Tromsø,
Norway
Eltoft, Torbjørn, University of Tromsø,
Norway
Principe, Jose, C, University of Florida,
USA
A New Approach to Robust Clustering
by Density Estimation in an Autocorrelation Derived Feature Space
Glotsos, Dimitris, Tampere University of Technology, Finland, and University of Patras, Greece
Tohka, Jussi,
Tampere University of
Technology, Finland
Soukka, Jori,
Arctic Diagnostics Oy, Finland
Ruotsalainen, Ulla, Tampere University of
Technology, Finland
Independent Component Analysis of
Word Contexts and Comparison with Traditional Categories
Väyrynen, Jaakko, Helsinki University of
Technology, Finland
Honkela, Timo,
Helsinki University of
Technology, Finland
Hyvärinen, Aapo,
University of Helsinki, Finland
Skewness Maximization for
Impulsive Sources in Blind Deconvolution
Pääjärvi, Patrik, Luleĺ University of
Technology, Sweden
LeBlanc, James, P, Luleĺ University of
Technology, Sweden
Image Processing II: Pattern Recognition
Texture Retrieval Using Ordinal
Co-Occurrence Features
Partio, Mari, Tampere University of
Technology, Finland
Cramariuc, Bogdan, Tampere University of
Technology, Finland
Gabbouj, Moncef,
Tampere University of Technology, Finland
Pattern Recognition by Grouping
Areas in DCT Compressed Images
Zhong,
Daidi, Tampere University of Technology, Finland
Defée, Irek,
Tampere University of
Technology, Finland
Audio Signal Processing II: Speech Recognition
Annotation and Automatic
Recognition of Spontaneously Dictated Medical Records for Norwegian
Markhus, Vidar, Norwegian University of Science and Technology, Norway
Gajic, Bojana,
Norwegian University of
Science and Technology, Norway
Svarverud, Jacques,
Norwegian University of Science and Technology, Norway
Solbraa, Lars Erik, Norwegian University
of Science and Technology, Norway
Johnsen, Magne, H, Norwegian University
of Science and Technology, Norway
Decoder Issues in Unlimited
Finnish Speech Recognition
Hirsimäki, Teemu, Helsinki University of
Technology, Finland
Kurimo, Mikko,
Helsinki University of
Technology, Finland
Using Phone Durations in Finnish
Large Vocabulary Continuous Speech Recognition
Pylkkönen, Janne, Helsinki University of Technology, Finland
Kurimo, Mikko, Helsinki University of Technology, Finland
Communications IV: Amplifiers and Coding
Measurements and Modelling of
Nonlinear Power Amplifiers
Jantunen, Peter, Helsinki University of Technology, Finland
Gámez, Gilda, Helsinki
University of Technology, Finland
Laakso, Timo, Helsinki
University of Technology, Finland
Design of Predistorters for Power
Amplifiers in Future Mobile Communications Systems
Cheong, MY, Helsinki
University of Technology, Finland
Werner, S, Helsinki
University of Technology, Finland
Laakso, TI, Helsinki
University of Technology, Finland
Exact SER-Precoding of
Orthogonal Space-Time Block Coded Correlated MIMO Channels: An Iterative
Approach
Hjørungnes, Are, University of Oslo, Norway
Gesbert, David, Eurécom Institute, France
Audio Signal Processing III: Speech Detection and Classification
Speech Presence Detection in the
Time-Frequency Domain Using Minimum Statistics
Sørensen, Karsten, V, Aalborg University, Denmark
Andersen, Søren, V, Aalborg University, Denmark
Detection of Voice Onset Time (VOT)
for Unvoiced Stops (/p/, /t/, /k/) Using the Teager Energy Operator (TEO) for
Automatic Detection of Accented English
Das, Sharmistha, University of Colorado, USA
Hansen, John, HL, University of
Colorado, USA
Clustering Techniques for
Acoustic-Phonetic Speech Classification
Pohjalainen, Jouni, Helsinki University of Technology, Finland
Proceedings of the 6th Nordic Signal Processing Symposium - NORSIG 2004 URL: http://signal.hut.fi/publications/norsig2004/index.htm Published June 9, 2004.