How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification

Shunichi Ishihara; Yuko Kinoshita

How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification

Shunichi Ishihara, Yuko Kinoshita

Faculty of Arts & Design

Research output: A Conference proceeding or a Chapter in Book › Conference contribution › peer-review

18 Citations (Scopus)

Abstract

This paper investigates how change in population size affects the reliability of the likelihood ratio (LR)-based forensic speaker classification. Using features of the long term F0 distribution, we performed LR-based speaker classification and examined its performance with population sizes from 10 to 120. The results revealed that LRs could be heavily influenced by the population data. We discovered that the reliability of LR-based evaluation of the evidence was heavily compromised if the population data was limited to a small number of speakers.

Original language	English
Title of host publication	Proceedings of the 9th Annual conference of International Speech Communication Association (Interspeech 2008)
Editors	M Wagner
Place of Publication	China
Publisher	IEEE, Institute of Electrical and Electronics Engineers
Pages	1941-1944
Number of pages	4
Volume	1
ISBN (Print)	9780769531748
Publication status	Published - 2008
Event	Interspeech 2008 - Brisbane, Australia Duration: 22 Sept 2008 → 26 Sept 2008

Conference

Conference	Interspeech 2008
Country/Territory	Australia
City	Brisbane
Period	22/09/08 → 26/09/08

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https://www.isca-speech.org/archive/archive_papers/interspeech_2008/i08_1941.pdf

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Ishihara, S., & Kinoshita, Y. (2008). How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification. In M. Wagner (Ed.), Proceedings of the 9th Annual conference of International Speech Communication Association (Interspeech 2008) (Vol. 1, pp. 1941-1944). IEEE, Institute of Electrical and Electronics Engineers. https://www.isca-speech.org/archive/archive_papers/interspeech_2008/i08_1941.pdf

Ishihara, Shunichi ; Kinoshita, Yuko. / How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification. Proceedings of the 9th Annual conference of International Speech Communication Association (Interspeech 2008). editor / M Wagner. Vol. 1 China : IEEE, Institute of Electrical and Electronics Engineers, 2008. pp. 1941-1944

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title = "How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification",

abstract = "This paper investigates how change in population size affects the reliability of the likelihood ratio (LR)-based forensic speaker classification. Using features of the long term F0 distribution, we performed LR-based speaker classification and examined its performance with population sizes from 10 to 120. The results revealed that LRs could be heavily influenced by the population data. We discovered that the reliability of LR-based evaluation of the evidence was heavily compromised if the population data was limited to a small number of speakers. ",

author = "Shunichi Ishihara and Yuko Kinoshita",

year = "2008",

language = "English",

isbn = "9780769531748",

volume = "1",

pages = "1941--1944",

editor = "M Wagner",

booktitle = "Proceedings of the 9th Annual conference of International Speech Communication Association (Interspeech 2008)",

publisher = "IEEE, Institute of Electrical and Electronics Engineers",

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note = "Interspeech 2008 ; Conference date: 22-09-2008 Through 26-09-2008",

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Ishihara, S & Kinoshita, Y 2008, How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification. in M Wagner (ed.), Proceedings of the 9th Annual conference of International Speech Communication Association (Interspeech 2008). vol. 1, IEEE, Institute of Electrical and Electronics Engineers, China, pp. 1941-1944, Interspeech 2008, Brisbane, Australia, 22/09/08. <https://www.isca-speech.org/archive/archive_papers/interspeech_2008/i08_1941.pdf>

How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification. / Ishihara, Shunichi; Kinoshita, Yuko.
Proceedings of the 9th Annual conference of International Speech Communication Association (Interspeech 2008). ed. / M Wagner. Vol. 1 China: IEEE, Institute of Electrical and Electronics Engineers, 2008. p. 1941-1944.

Research output: A Conference proceeding or a Chapter in Book › Conference contribution › peer-review

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T1 - How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification

AU - Ishihara, Shunichi

AU - Kinoshita, Yuko

PY - 2008

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N2 - This paper investigates how change in population size affects the reliability of the likelihood ratio (LR)-based forensic speaker classification. Using features of the long term F0 distribution, we performed LR-based speaker classification and examined its performance with population sizes from 10 to 120. The results revealed that LRs could be heavily influenced by the population data. We discovered that the reliability of LR-based evaluation of the evidence was heavily compromised if the population data was limited to a small number of speakers.

AB - This paper investigates how change in population size affects the reliability of the likelihood ratio (LR)-based forensic speaker classification. Using features of the long term F0 distribution, we performed LR-based speaker classification and examined its performance with population sizes from 10 to 120. The results revealed that LRs could be heavily influenced by the population data. We discovered that the reliability of LR-based evaluation of the evidence was heavily compromised if the population data was limited to a small number of speakers.

M3 - Conference contribution

SN - 9780769531748

VL - 1

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EP - 1944

BT - Proceedings of the 9th Annual conference of International Speech Communication Association (Interspeech 2008)

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PB - IEEE, Institute of Electrical and Electronics Engineers

CY - China

T2 - Interspeech 2008

Y2 - 22 September 2008 through 26 September 2008

ER -

How Many Do We Need? Exploration of the Population Size Effect on the Performance of Forensic Speaker Classification

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