Speech-Speaker Variability: Analyses in Formant & Cepstral Spaces; Sub-Band Cepstral Distance & Applications: Speech & Speaker Classification, Forensic Voice Comparison

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2024

(with Shunichi Ishihara) “Locating spectral regions of speaker sensitivity with the sub-band mel-frequency cepstrum: An investigation guided by forensic voice comparison”, Proceedings of 19th Australasian International Conference on Speech Science & Technology, 3-5 December 2024, Melbourne, Australia.

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2024

(with Michael Lambropoulos & Shunichi Ishihara) “The sub-band cepstrum as a tool for locating local spectral regions of phonetic sensitivity: A first attempt with multi-speaker vowel data”, Proceedings of INTERSPEECH, 1-5 September 2024, Kos, Greece.

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2023

(with Shunichi Ishihara) “The sub-band cepstrum as a tool for local spectral analysis in forensic voice comparison”, Proceedings of 21st Annual Workshop of the Australasian Language Technology Association, 29 November - 1 December, Melbourne, 2023.

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2022

(with Yuko Kinoshita & Takashi Osanai) “Sub-band cepstral distance as an alternative to formants: Quantitative evidence from a forensic comparison experiment”, Journal of Phonetics, vol. 94, 2022.

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2019

(with Yuko Kinoshita & Takashi Osanai) “Analysis of speaker and co-articulation effects based on sub-band cepstral variances in the Japanese vowels of 300 male speakers”, Abstract Proceedings of 14th Biennial Conference of the International Association of Forensic Linguists (IAFL), 1-5 July 2019, Melbourne, Australia.

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2018

(with Takashi Osanai & Yuko Kinoshita) “Exploring sub-band cepstral distances for more robust speaker identification”, Proceedings of 17th Australasian International Conference on Speech Science & Technology, 4-7 December 2018, Sydney, Australia.

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2018

(with Yuko Kinoshita & Takashi Osanai) “Forensic voice comparison using sub-band cepstral distances as features: A first attempt with vowels from 306 Japanese speakers under channel mismatch conditions”, Proceedings of 17th Australasian International Conference on Speech Science & Technology, 4-7 December 2018, Sydney, Australia.

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2016

(with Yuko Kinoshita & Takashi Osanai) “Sub-band cepstral variability within and between speakers under microphone and mobile conditions: A preliminary investigation”, Proceedings of 16th Australasian International Conference on Speech Science & Technology, 6-9 December 2016, Sydney, Australia.

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2011

“Speaker-variance ratios in forensically-realistic vowel formant data: Normalising for consonantal context”, Abstract Proceedings of Annual Conference of the International Association for Forensic Phonetics & Acoustics (IAFPA), 24-28 Juy 2011, Vienna, Austria.

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2008

(with Peter French, Philip Harrison & Samantha Simpson) “Population data for English spoken in England: A modest first step”, Abstract Proceedings of Annual Conference of the International Association for Forensic Phonetics & Acoustics (IAFPA), 21-23 Juy 2008, Lausanne, Switzerland.

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2006

(with Elisabeth Zetterholm) “F-pattern Analysis of Professional Imitations of "hallå" in three Swedish Dialects”, In G. Ambrazaitis & S. Schötz (Eds.), Working Papers 52, Centre for Languages and Literature, Lund University, Sweden.

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2006

(with Elisabeth Zetterholm) “Acoustic-articulatory interpretations of professional imitations of “hallå” in three Swedish dialects”, Abstract Proceedings of Annual Conference of the International Association for Forensic Phonetics & Acoustics (IAFPA), 23-26 Juy 2006, Gothenberg, Sweden.

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2004

(with Mehrdad Khodai-Joopari & Michael Barlow) “Speaker variability on a continuum of spectral sub-bands from 297-speakers' non-contemporaneous cepstra of Japanese vowels”, Proceedings of 10th Australasian International Conference on Speech Science & Technology, 8-10 December 2004, Sydney, Australia.

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2004

(with Mehrdad Khodai-Joopari & Michael Barlow) “A forensically-motivated tool for selecting cepstrally-consistent steady-states from non-contemporaneous vowel utterances”, Proceedings of 8th International Conference on Spoken Language Processing, 4-8 October 2004, Jeju Island, South Korea.

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2001

(with Phil Rose) “A comparison of two acoustic methods for forensic speaker discrimination", Acoustics Australia vol. 29, 2001.

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2000

(with Phil Rose) “Comparative performance of cepstrum- and formant-based analysis of similar-sounding speakers for forensic speaker identification", Proceedings of 8th Australian International Conference on Speech Science & Technology, 5-7 December 2000, Canberra, Australia.

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2000

(with Parham Mokhtari & Kazuyo Tanaka) “Toward an acoustic-articulatory model of inter-speaker variability", Proceedings of 6th International Conference on Spoken Language Processing, 16-20 October 2000, Beijing, China.

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1999

Review of Computer Speech Recognition, Compression, Synthesis by M.R. Schroeder, Acoustics Australia, 37(3), 1999.

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1998

(with Parham Mokhtari) “Acoustic-articulatory evaluation of the upper vowel-formant
region and its presumed speaker-specific potency",
Proceedings of 5th International Conference on Spoken Language Processing, 30 Nov-04 December 1998, Sydney, Australia.

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1997

(with Santha Sampath) “Vowel formant variability in spontaneous speech of native and non-native speakers of Australian English", Proceedings of International Conference on Speech Processing, 26-28 August 1997, Seoul, South Korea.

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1996

(with Parham Mokhtari) “A methodology for investigating vowel-speaker interactions in the acoustic-phonetic domain", Proceedings of 6th Australian International Conference on Speech Science & Technology, 10-12 December 1996, Adelaide, Australia.

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1996

“Multi-speaker formant data on the Australian English vowels: A tribute to J.R.L. Bernard's (1967) pioneering research", Proceedings of 6th Australian International Conference on Speech Science & Technology, 10-12 December 1996, Adelaide, Australia.

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1995

(with David J. Broad) “Back-front classification of English vowels using a cepstrum-to-formant model", Proceedings of 130th Meeting of the Acoustical Society of America, 27 Nov-1 Dec 1995, Missouri, USA.

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1994

(with Clive Cooper) “An investigation of the speaker factor in vowel nuclei", Proceedings of 5th Australian International Conference on Speech Science & Technology, 6-8 December 1994, Perth, Australia.

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1994

(with Parham Mokhtari) “Frequency-band specification in cepstral distance computation", Proceedings of 5th Australian International Conference on Speech Science & Technology, 6-8 December 1994, Perth, Australia.

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1994

(with Parham Mokhtari) “Contributions of selected spectral regions to vowel classification accuracy", Proceedings of 3rd International Conference on Spoken Language Processing, 18-22 September 1994, Yokohama, Japan.

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1988

(with Simon J. Butler) “Prosodically-guided methods for nearest neighbour classification of syllables", Proceedings of 2nd Australian International Conference on Speech Science & Technology, 29 Nov-1 Dec 1988, Sydney, Australia.

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1988

(with Simon J. Butler) “On the asymptotic performance of nearest neighbour pattern classifiers in speech recognition", Proceedings of 2nd Australian International Conference on Speech Science & Technology, 29 Nov-1 Dec 1988, Sydney, Australia.

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