Geoffrey Stewart Morrison

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Measuring reliability in forensic voice comparison.

Julien Epps, Tharmarajah Thiruvaran, Geoffrey Stewart Morrison, 2010 .

Introduction to forensic voice comparison

Geoffrey Stewart Morrison, Ewald Enzinger, Ewald Enzinger, 2019, The Routledge Handbook of Phonetics.

The impact in forensic voice comparison of lack of calibration and of mismatched conditions between the known-speaker recording and the relevant-population sample recordings.

Geoffrey Stewart Morrison, G. Morrison, 2017, Forensic science international.

Automatic-type calibration of traditionally derived likelihood ratios: forensic analysis of australian English /o/ formant trajectories

Geoffrey Stewart Morrison, Yuko Kinoshita, Y. Kinoshita, 2008, INTERSPEECH.

Chapter 99: Forensic speech science

Geoffrey Stewart Morrison, Cuiling Zhang, Ewald Enzinger, 2018 .

Vacuous standards – Subversion of the OSAC standards-development process

Cedric Neumann, Geoffrey Stewart Morrison, Patrick Henry Geoghegan, 2020, Forensic science international. Synergy.

Use of relevant data, quantitative measurements, and statistical models to calculate a likelihood ratio for a Chinese forensic voice comparison case involving two sisters.

Geoffrey Stewart Morrison, Cuiling Zhang, Ewald Enzinger, 2016, Forensic science international.

An acoustic and statistical analysis of Spanish mid-vowel allophones

Geoffrey Stewart Morrison, G. Morrison, 2004 .

Protocol for the collection of databases of recordings for forensic-voice-comparison research and practice

Philip Rose, Geoffrey Stewart Morrison, Cuiling Zhang, 2012 .

Estimating the Precision of the Likelihood-Ratio Output of a Forensic-Voice-Comparison System

Julien Epps, Tharmarajah Thiruvaran, Geoffrey Stewart Morrison, 2010, Odyssey.

A statistical procedure to adjust for time-interval mismatch in forensic voice comparison

Finnian Kelly, Geoffrey Stewart Morrison, 2019, Speech Commun..

A comparison of procedures for the calculation of forensic likelihood ratios from acoustic-phonetic data: Multivariate kernel density (MVKD) versus Gaussian mixture model-universal background model (GMM-UBM)

Geoffrey Stewart Morrison, G. Morrison, 2011, Speech Commun..

Forensic voice Comparison using likelihood ratios based on Polynomial curves fitted to the formant trajectories of Australian English

Geoffrey Stewart Morrison, 2009 .

Database selection for forensic voice comparison

Tharmarajah Thiruvaran, Geoffrey Stewart Morrison, Felipe Ochoa, 2012, Odyssey.

Multi-laboratory evaluation of forensic voice comparison systems under conditions reflecting those of a real forensic case (forensic_eval_01) - Conclusion

Geoffrey Stewart Morrison, Ewald Enzinger, 2019, Speech Commun..

What Did Bain Really Say? A Preliminary Forensic Analysis of the Disputed Utterance Based on Data, Acoustic Analysis, Statistical Models, Calculation of Likelihood Ratios, and Testing of Validity

Geoffrey Stewart Morrison, Michael Hoy, 2012 .

Mismatched distances from speakers to telephone in a forensic-voice-comparison case

Geoffrey Stewart Morrison, Ewald Enzinger, 2015, Speech Commun..

Statistical Models in Forensic Voice Comparison

Daniel Ramos, Geoffrey Stewart Morrison, Ewald Enzinger, 2020 .

Humans versus Machine: Forensic Voice Comparison on a Small Database of Swedish Voice Recordings

Geoffrey Stewart Morrison, Jonas Lindh, 2011, ICPhS.

An adaptive sampling procedure for speech perception experiments

Geoffrey Stewart Morrison, 2006, INTERSPEECH.

Reliability of human-supervised formant-trajectory measurement for forensic voice comparison.

Geoffrey Stewart Morrison, Felipe Ochoa, Cuiling Zhang, 2013, The Journal of the Acoustical Society of America.

Distinguishing between science and pseudoscience in forensic acoustics

Geoffrey Stewart Morrison, 2013 .

Forensic voice comparison using voice source features: An evaluation of the GLOTTEX R software package

Geoffrey Stewart Morrison, Cuiling Zhang, Ewald Enzinger, 2012 .

What should a forensic practitioner's likelihood ratio be? II.

Geoffrey Stewart Morrison, G. Morrison, 2017, Science & justice : journal of the Forensic Science Society.

Forensic Voice Comparison Using Chinese /iau/

Tharmarajah Thiruvaran, Geoffrey Stewart Morrison, Cuiling Zhang, 2011, ICPhS.

Multi-laboratory evaluation of forensic voice comparison systems under conditions reflecting those of a real forensic case (forensic_eval_01) - Introduction

Geoffrey Stewart Morrison, Ewald Enzinger, Ewald Enzinger, 2016, Speech Commun..

Vowel Inherent Spectral Change in Forensic Voice Comparison

Geoffrey Stewart Morrison, G. Morrison, 2009 .

An Issue in the Calculation of Logistic-Regression Calibration and Fusion Weights for Forensic Voice Comparison

Julien Epps, Tharmarajah Thiruvaran, Geoffrey Stewart Morrison, 2010 .

Forensic Voice Comparison

Geoffrey Stewart Morrison, Cuiling Zhang, 2015 .

Forensic speaker recognition in Chinese: a multivariate likelihood ratio discrimination on /i/ and /y/

Philip Rose, Geoffrey Stewart Morrison, Cuiling Zhang, 2008, INTERSPEECH.

Tutorial on logistic-regression calibration and fusion:converting a score to a likelihood ratio

Geoffrey Stewart Morrison, G. Morrison, 2013, 2104.08846.

A response to Marquis et al. (2017) What is the error margin of your signature analysis?

Geoffrey Stewart Morrison, Patrick Henry Geoghegan, Kaye Ballentyne, 2018, Forensic science international.

Forensic speech science

Geoffrey Stewart Morrison, Cuiling Zhang, Ewald Enzinger, 2019 .

Logistic regression modelling for first and second language perception data

Geoffrey Stewart Morrison, G. Morrison, 2007 .

Effects of telephone transmission on the performance of formant-trajectory-based forensic voice comparison - Female voices

Geoffrey Stewart Morrison, Cuiling Zhang, Felipe Ochoa, 2013, Speech Commun..

A CROSS-LANGUAGE VOWEL NORMALISATION PROCEDURE

Terrance M. Nearey, Geoffrey Stewart Morrison, 2006 .

Empirical test of the performance of an acoustic-phonetic approach to forensic voice comparison under conditions similar to those of a real case.

Geoffrey Stewart Morrison, Ewald Enzinger, Ewald Enzinger, 2017, Forensic science international.

A cross-dialect comparison of Peninsula- and Peruvian-Spanish vowels

Geoffrey Stewart Morrison, Paola Escudero, P. Escudero, 2007 .

A demonstration of the application of the new paradigm for the evaluation of forensic evidence under conditions reflecting those of a real forensic-voice-comparison case.

Geoffrey Stewart Morrison, Felipe Ochoa, Ewald Enzinger, 2016, Science & justice : journal of the Forensic Science Society.

Special issue on measuring and reporting the precision of forensic likelihood ratios: Introduction to the debate.

Geoffrey Stewart Morrison, G. Morrison, 2016, Science & justice : journal of the Forensic Science Society.

Data and software associated with: Morrison GS, Kelly F (2019) A statistical procedure to adjust for time-interval mismatch in forensic voice comparison

Finnian Kelly, Geoffrey Stewart Morrison, 2019 .

Voice source features for forensic voice comparison - an evaluation of the GLOTTEX software package

Geoffrey Stewart Morrison, Cuiling Zhang, Ewald Enzinger, 2012, Odyssey.

Likelihood ratio calculation for a disputed-utterance analysis with limited available data

James M. Curran, Geoffrey Stewart Morrison, Jonas Lindh, 2014, Speech Commun..

Perception of English /i/ and /I/ by Japanese and Spanish Listeners: Longitudinal Results

Geoffrey Stewart Morrison, G. Morrison, 2004 .

Refining the relevant population in forensic voice comparison - A response to Hicks et alii (2015) The importance of distinguishing information from evidence/observations when formulating propositions.

Geoffrey Stewart Morrison, Cuiling Zhang, Ewald Enzinger, 2016, Science & justice : journal of the Forensic Science Society.

Extraction of likelihood‐ratio forensic evidence from the formant trajectories of diphthongs

Phil Rose, Geoffrey Stewart Morrison, Yuko Kinoshita, 2008 .

What should a forensic practitioner's likelihood ratio be?

Geoffrey Stewart Morrison, Ewald Enzinger, Ewald Enzinger, 2016, Science & justice : journal of the Forensic Science Society.

Admissibility of forensic voice comparison testimony in England and Wales

Geoffrey Stewart Morrison, G. Morrison, 2018 .

INTERPOL survey of the use of speaker identification by law enforcement agencies.

Geoffrey Stewart Morrison, Gaëlle Jardine, G. Morrison, 2016, Forensic science international.

Measuring the validity and reliability of forensic likelihood-ratio systems.

Geoffrey Stewart Morrison, G. Morrison, 2011, Science & justice : journal of the Forensic Science Society.

A response to the UK position statement on forensic speaker comparison

Phil Rose, Geoffrey Stewart Morrison, 2009 .

L1-Spanish Speakers' Acquisition of the English /i /—/I/ Contrast: Duration-based Perception is Not the Initial Developmental Stage

Geoffrey Stewart Morrison, G. Morrison, 2008, Language and speech.

Analysis of categorical response data: use logistic regression rather than endpoint-difference scores or discriminant analysis.

Geoffrey Stewart Morrison, Maria V Kondaurova, 2009, The Journal of the Acoustical Society of America.

The nature of the schwa/zero alternation in French clitics: experimental and non-experimental evidence

Geoffrey Stewart Morrison, Marie-Hélène Côté, G. Morrison, 2007, Journal of French Language Studies.

Vowel Inherent Spectral Change

Geoffrey Stewart Morrison, Peter F. Assmann, 2013 .

Avoiding overstating the strength of forensic evidence: Shrunk likelihood ratios/Bayes factors.

Norman Poh, Geoffrey Stewart Morrison, N. Poh, 2017, Science & justice : journal of the Forensic Science Society.

Distinguishing between forensic science and forensic pseudoscience: testing of validity and reliability, and approaches to forensic voice comparison.

Geoffrey Stewart Morrison, G. Morrison, 2014, Science & justice : journal of the Forensic Science Society.

Forensic voice comparison and the paradigm shift.

Geoffrey Stewart Morrison, G. Morrison, 2009, Science & justice : journal of the Forensic Science Society.

Theories of Vowel Inherent Spectral Change

Geoffrey Stewart Morrison, 2013 .

Assessing the Admissibility of a New Generation of Forensic Voice Comparison Testimony

William C. Thompson, Geoffrey Stewart Morrison, W. Thompson, 2016 .

Score based procedures for the calculation of forensic likelihood ratios - Scores should take account of both similarity and typicality.

Geoffrey Stewart Morrison, Ewald Enzinger, Ewald Enzinger, 2018, Science & justice : journal of the Forensic Science Society.

An empirical estimate of the precision of likelihood ratios from a forensic-voice-comparison system.

Philip Rose, Geoffrey Stewart Morrison, Cuiling Zhang, 2011, Forensic science international.