Biography
Dr Jacqueline Walker B.A., B.E. (Hons I), PhD is an expert in synchronization, time and frequency transfer. She has worked on developing systems for time transfer and also made contributions to techniques reducing the probability of metastable failure in digital systems. Dr Walker also has expertise in biomedical, speech and music signal processing, including postgraduate research student supervision and involvement in funded research projects including as Principal Investigator. She is with the Department of Electronic and Computer Engineering at the University of Limerick, Ireland where she currently lectures in Cloud Computing, Digital Electronics and Mobile and Wireless Communications.
Research Interests
Telecommunications: synchronization and end-to-end timing transfer in networks including satellite networks, jitter; Metastability.
Signal processing, especially nonlinear signal processing in a range of application areas: Biomedical: blind deconvolution to recover MUAP from EMG signals, inverse filtering to recover firing patterns; Speech: deconvolution and inverse filtering to recover glottal source, glottal source modelling and analysis; Music: polyphonic music transcription, polyphonic pitch detection, onset detection; Higher Order Statistics, especially bispectrum;
Professional Activities
Consultancy
- 2011 Mixed Processing Ltd - Analysis of satellite position determination and timing transfer
- 2004 Fountain Software, Ennis, Co. Clare - Review of approaches to automatic signature verification
Employment
- 1997 University of Limerick - Lecturer
- 1996 Co-Operative Research Centre in Broadband Telecoms - Research Engineer
Education
- 1997 Curtin University of Technology - Ph.D.
- 1993 University of Western Australia - Bachelor of Engineering
- 1988 University of Western Australia - B.A.
Association
- 1991 Professional Engineering and Technology Association, IEEE
- 1991 Professional Engineering and Technology Association, IET
Language
- French
- Italian
Publications
Book Chapters
Genetic Programming for Musical Sound Analysis
Loughran, R; Walker, J; O'Neill, M; McDermott, J
(2012)
Genetic Programming for Musical Sound Analysis
In Evolutionary and Biologically Inspired Music, Sound, Art and Design LNCS vol. 7247;
Berlin, Heidelberg, Germany :
Springer
pp. 176-186
DOI: 10.1007/978-3-642-29142-5_16
A Review of Glottal Waveform Analysis
Walker, J; Murphy, P
(2007)
A Review of Glottal Waveform Analysis
In Progress in Nonlinear Speech Processing, WNSP (Workshop on Nonlinear Speech Processing) 2005, LNCS 4391;
Berlin :
Springer-Verlag
pp. 1-21
Advanced methods for glottal wave extraction
Walker, J; Murphy, P
(2005)
Advanced methods for glottal wave extraction
In Springer Verlag NOLISP 2005 Lecture Notes in Artificial Intelligence, 3817;
Berlin :
Springer-Verlag
pp. 139-148
Peer Reviewed Journals
Experimental and Simulation Study for Commercial Time Transfer Service over Geostationary Satellite
Walker, J;Genova, M
(2013)
Experimental and Simulation Study for Commercial Time Transfer Service over Geostationary Satellite
In NCSLI Measure: The Journal of Measurement Science;
[ULIR]
A New Spike Detection Algorithm for Extracellular Neural Recordings
Shahid, S; Walker, J; Smith, LS
(2010)
A New Spike Detection Algorithm for Extracellular Neural Recordings
In Ieee Transactions On Biomedical Engineering;
pp. 853-866
DOI: 10.1109/TBME.2009.2026734
Experimental Evaluation of the Jitter Generated in Timing Transfer
Walker, J; Cantoni, A
(2010)
Experimental Evaluation of the Jitter Generated in Timing Transfer
In Ieee Transactions On Communications;
pp. 3605-3612
DOI: 10.1109/TCOMM.2010.092810.090499
[ULIR]
Cepstrum of bispectrum - A new approach to blind system reconstruction
Shahid, S; Walker, J
(2008)
Cepstrum of bispectrum - A new approach to blind system reconstruction
In Signal Processing;
pp. 19-32
DOI: 10.1016/j.sigpro.2007.07.002
[ULIR]
Characterization of a flip-flop metastability measurement method
Cantoni, A; Walker, J; Tomlin, TD
(2007)
Characterization of a flip-flop metastability measurement method
In Ieee Transactions On Circuits And Systems I-Regular Papers;
pp. 1032-1040
DOI: 10.1109/TCSI.2007.895514
Modeling the effect of nonideal reference clocks on the jitter generated in timing transfer
Walker, J; Cantoni, A
(2007)
Modeling the effect of nonideal reference clocks on the jitter generated in timing transfer
In Ieee Transactions On Communications;
pp. 44-47
DOI: 10.1109/TCOMM.2006.884819
[ULIR]
Smart music onset detection combined with band-wise processing
Liu, R; Feurer, K; Griffith, N; Walker, J
(2006)
Smart music onset detection combined with band-wise processing
In Shengxue Jishu;
pp. 635-643
Application of higher order statistics techniques to EMG signals to characterize the motor unit action potential
Shahid, S; Walker, J; Lyons, GM; Byrne, CA; Nene, AV
(2005)
Application of higher order statistics techniques to EMG signals to characterize the motor unit action potential
In Ieee Transactions On Biomedical Engineering;
pp. 1195-1209
DOI: 10.1109/TBME.2005.847525
[ULIR]
A new reconstruction approach in the SRTS method
Walker, J; Cantoni, A
(2003)
A new reconstruction approach in the SRTS method
In Ieee Transactions On Communications;
pp. 1761-1764
DOI: 10.1109/TCOMM.2003.819209
Modeling of the synchronization process jitter spectrum with input jitter
Walker, J; Cantoni, A
(1999)
Modeling of the synchronization process jitter spectrum with input jitter
In Ieee Transactions On Communications;
pp. 316-324
DOI: 10.1109/26.752138
Determining parameters to minimize jitter generation in the SRTS method
Walker, J; Cantoni, A
(1998)
Determining parameters to minimize jitter generation in the SRTS method
In Ieee Transactions On Communications;
pp. 82-90
DOI: 10.1109/26.655406
Jitter Analysis for Two Methods of Synchronization for External Timing Injection
Walker, J; Cantoni, A
(1996)
Jitter Analysis for Two Methods of Synchronization for External Timing Injection
In Ieee Transactions On Communications;
pp. 269-276
A New Synchronizer Design
Walker, J; Cantoni, A
(1996)
A New Synchronizer Design
In Ieee Transactions On Computers;
pp. 1308-1311
Conference Publications
URSI GASS 2020
Taylor, David; Walker, Jacqueline; Strunz, Bob
(2020)
URSI GASS 2020
DAFx 2014 - Proceedings of the 17th International Conference on Digital Audio Effects
Pigott D.;Walker J.
(2014)
DAFx 2014 - Proceedings of the 17th International Conference on Digital Audio Effects
17th International Conference on Digital Audio Effects DAFx14
Piggott, D;Walker, J
(2014)
17th International Conference on Digital Audio Effects DAFx14
[ULIR]
DAFX-14: 17TH INTERNATIONAL CONFERENCE ON DIGITAL AUDIO EFFECTS
Roddy, M;Walker, J
(2014)
DAFX-14: 17TH INTERNATIONAL CONFERENCE ON DIGITAL AUDIO EFFECTS
ERLANGEN :
INT AUDIO LABORATORIES ERLANGEN
pp. 23-28
DAFx 2014 - Proceedings of the 17th International Conference on Digital Audio Effects
Roddy M.;Walker J.
(2014)
DAFx 2014 - Proceedings of the 17th International Conference on Digital Audio Effects
17th International Conference on Digital Audio Effects DAFx14
Roddy, M; Walker, J
(2014)
17th International Conference on Digital Audio Effects DAFx14
[ULIR]
DAFX-14: 17TH INTERNATIONAL CONFERENCE ON DIGITAL AUDIO EFFECTS
Pigott, D;Walker, J
(2014)
DAFX-14: 17TH INTERNATIONAL CONFERENCE ON DIGITAL AUDIO EFFECTS
ERLANGEN :
INT AUDIO LABORATORIES ERLANGEN
pp. 49-55
2013 JOINT EUROPEAN FREQUENCY AND TIME FORUM & INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (EFTF/IFC)
Walker, J,Genova, M,
(2013)
2013 JOINT EUROPEAN FREQUENCY AND TIME FORUM & INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (EFTF/IFC)
In 2013 Joint European Frequency And Time Forum & International Frequency Control Symposium (Eftf/Ifc);
pp. 492-495
[ULIR]
44th Annual Precise Time and Time Interval (PTTI) Systems and Applications Meeting 2012
Walker J.;Genova M.
(2012)
44th Annual Precise Time and Time Interval (PTTI) Systems and Applications Meeting 2012
pp. 221-237
44th Precise Time and Time Interval Meeting
Walker, J; Genova, M
(2012)
44th Precise Time and Time Interval Meeting
[ULIR]
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Loughran R.;Walker J.;O'Neill M.;McDermott J.
(2012)
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
In Lecture Notes In Computer Science (Including Subseries Lecture Notes In Artificial Intelligence And Lecture Notes In Bioinformatics);
pp. 176-186
DOI: 10.1007/978-3-642-29142-5_16
EvoMusart 2012
Loughran, R; Walker, J; O'Neill, M; McDermott, J
(2012)
EvoMusart 2012
20th Irish Signals and Systems Conference
Loughran R Walker J O'Neill M
(2009)
20th Irish Signals and Systems Conference
International Computer Music Conference
Loughran, R., Walker, J., O¿Farrell, M. and O¿Neill, M.
(2008)
International Computer Music Conference
pp. 387-390
[ULIR]
International Computer Music Conference, ICMC 2008
Loughran R.;Walker J.;O'Neill M.;O'Farrell M.
(2008)
International Computer Music Conference, ICMC 2008
8th International Conference on Mathematics in Signal Processing
Quinn D; Walker, J
(2008)
8th International Conference on Mathematics in Signal Processing
pp. 120-123
Cirencester, England, UK
2008 IEEE CONGRESS ON EVOLUTIONARY COMPUTATION, VOLS 1-8
Piccand, S; ONeill, M; Walker, J
(2008)
2008 IEEE CONGRESS ON EVOLUTIONARY COMPUTATION, VOLS 1-8
pp. 2505-2512
ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, Proceedings
Loughran R.;Walker J.;O'Neill M.;O'Farrell M.
(2008)
ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, Proceedings
pp. 643-648
DOI: 10.1109/ICALIP.2008.4590236
8th International Conference on Mathematics in Signal Processing
Quinn, D; Walker, J
(2008)
8th International Conference on Mathematics in Signal Processing
pp. 157-161
Cirencester, England, UK
2008 INTERNATIONAL CONFERENCE ON AUDIO, LANGUAGE AND IMAGE PROCESSING, VOLS 1 AND 2, PROCEEDINGS
Loughran, R; Walker, J; ONeill, M; OFarrell, M
(2008)
2008 INTERNATIONAL CONFERENCE ON AUDIO, LANGUAGE AND IMAGE PROCESSING, VOLS 1 AND 2, PROCEEDINGS
pp. 643-648
[ULIR]
5th International Symposium on Computer Music Modeling and Retrieval,
Loughran, R; Walker, J; O'Farrell, M; O'Neill, M
(2008)
5th International Symposium on Computer Music Modeling and Retrieval,
pp. 19-33
Copenhagen, Denmark
[ULIR]
2008 IEEE Congress on Evolutionary Computation, CEC 2008
Piccand S.;O'Neill M.;Walker J.
(2008)
2008 IEEE Congress on Evolutionary Computation, CEC 2008
pp. 2505-2512
DOI: 10.1109/CEC.2008.4631134
2008 INTERNATIONAL CONFERENCE ON AUDIO, LANGUAGE AND IMAGE PROCESSING, VOLS 1 AND 2, PROCEEDINGS
Kreutzer, C; Walker, J; ONeill, M
(2008)
2008 INTERNATIONAL CONFERENCE ON AUDIO, LANGUAGE AND IMAGE PROCESSING, VOLS 1 AND 2, PROCEEDINGS
pp. 633-637
ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, Proceedings
Kreutzer C.;Walker J.;O'Neill M.
(2008)
ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, Proceedings
pp. 633-637
DOI: 10.1109/ICALIP.2008.4590233
SIGMAP 2008 - Proceedings of the International Conference on Signal Processing and Multimedia Applications
Kreutzer C.;Walker J.;O'Neill M.
(2008)
SIGMAP 2008 - Proceedings of the International Conference on Signal Processing and Multimedia Applications
pp. 119-124
SIGMAP 2008: PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND MULTIMEDIA APPLICATIONS
Kreutzer, C; Walker, J; ONeill, M
(2008)
SIGMAP 2008: PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND MULTIMEDIA APPLICATIONS
pp. 119-124
[ULIR]
Progress in Nonlinear Speech Processing
Walker, J; Murphy, P
(2007)
Progress in Nonlinear Speech Processing
pp. 1-21
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Walker J.;Murphy P.
(2007)
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
In Lecture Notes In Computer Science (Including Subseries Lecture Notes In Artificial Intelligence And Lecture Notes In Bioinformatics);
pp. 1-21
Inaugural International Conference on Music Communication Science (ICOMCS)
Kelly, R; Walker, J
(2007)
Inaugural International Conference on Music Communication Science (ICOMCS)
[ULIR]
GECCO 2007: GENETIC AND EVOLUTIONARY COMPUTATION CONFERENCE, VOL 1 AND 2
Piccand, S; ONeill, M; Walker, J
(2007)
GECCO 2007: GENETIC AND EVOLUTIONARY COMPUTATION CONFERENCE, VOL 1 AND 2
pp. 179-179
Proceedings of GECCO 2007: Genetic and Evolutionary Computation Conference
Piccand S.;O'Neill M.;Walker J.
(2007)
Proceedings of GECCO 2007: Genetic and Evolutionary Computation Conference
pp. -179
DOI: 10.1145/1276958.1276993
IEEE International Symposium on Circuits and Systems (ISCAS06)
Cantoni, A. and Walker, J.
(2006)
IEEE International Symposium on Circuits and Systems (ISCAS06)
Proceedings of the 2006 IEEE International Symposium on Circuits and Systems. ISBN: 0-7803-9390-2; IEEE CAS Society.(Ed.)
pp. 4135-4138
Proceedings - IEEE International Symposium on Circuits and Systems
Cantoni A.;Walker J.
(2006)
Proceedings - IEEE International Symposium on Circuits and Systems
pp. 4135-4138
Characterization of a metastability measurement system
Cantoni, A,Walker, J,
(2006)
Characterization of a metastability measurement system
In 2012 Ieee International Symposium On Circuits And Systems (Iscas 2012);
pp. 4135-
[ULIR]
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Walker J.;Murphy P.
(2005)
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
In Lecture Notes In Computer Science (Including Subseries Lecture Notes In Artificial Intelligence And Lecture Notes In Bioinformatics);
pp. 139-149
Nonlinear Speech Processing 2005 (NOLISP'05)
Walker, J. and P. Murphy
(2005)
Nonlinear Speech Processing 2005 (NOLISP'05)
Faundez-Zanuy, M.(Ed.)
pp. CD-Rom.-*
ISCA Tutorial and Workshop on Nonlinear Speech Processing - NoLisp'05
Walker, J,Murphy, P
(2005)
ISCA Tutorial and Workshop on Nonlinear Speech Processing - NoLisp'05
pp. 139-149
Barcelona, Spain
17th International EURASIP Conference BIOSIGNAL 2004
Shahjahan, S; Walker, J; Lyons, G; Byrne, C A
(2004)
17th International EURASIP Conference BIOSIGNAL 2004
pp. 72-74
4th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP),
Walker, J
(2004)
4th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP),
pp. 318-321
Newcastle, England, UK
6th IMA International Conference on Mathematics in Signal Processing
Walker, J; Bimbot, F; Benaroya, L
(2004)
6th IMA International Conference on Mathematics in Signal Processing
pp. 203-206
Cirencester, England, UK
[ULIR]
Irish Signals and Systems Conference 2003 (ISSC'03)
Shahid, S. and Walker, J.
(2003)
Irish Signals and Systems Conference 2003 (ISSC'03)
H. Mahdi, M. J. Hayes(Ed.)
pp. 230-235
[ULIR]
Irish Signals and Systems Conference 2003 (ISSC'03)
Walker, J. and Murphy, P.
(2003)
Irish Signals and Systems Conference 2003 (ISSC'03)
H. Mahdi, M. J. Hayes(Ed.)
pp. 242-246
ISCA Tutorial and Workshop on Nonlinear Speech Processing - Nolisp'03
Walker, J
(2003)
ISCA Tutorial and Workshop on Nonlinear Speech Processing - Nolisp'03
[ULIR]
Stockholm Music Acoustics Conference (SMAC'03)
Liu, R; Griffith, N;, Walker, J; Murphy, P
(2003)
Stockholm Music Acoustics Conference (SMAC'03)
Bresin, R(Ed.)
pp. 553-556
Stockholm, Sweden
[ULIR]
Irish Signals and Systems Conference 2001 (ISSC'01)
Shahid, S. and Walker, J.
(2001)
Irish Signals and Systems Conference 2001 (ISSC'01)
*(Ed.)
pp. 407-411
[ULIR]
Irish Signals and Systems Conference 2001 (ISSC'01)
Walker, J. and Murphy, P.
(2001)
Irish Signals and Systems Conference 2001 (ISSC'01)
*(Ed.)
pp. 364-367
[ULIR]
University of Limerick Biomedical Institute, 3rd Annual Research Day, Biomedicine in the Aged
Walker, J. and Shahid, S.
(2000)
University of Limerick Biomedical Institute, 3rd Annual Research Day, Biomedicine in the Aged
Dr T. McLoughlin(Ed.)
pp. 5-5
[ULIR]
IEEE International Symposium on Circuits and Systems 1994 (ISCAS'94)
Walker, J. and Cantoni, A.
(1994)
IEEE International Symposium on Circuits and Systems 1994 (ISCAS'94)
R Soin(Ed.)
pp. 97-100