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A Comparison of Two Acoustic Methods for Forensic Speaker Discrimination

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Date

2001

Authors

Clermont, Frantz
Rose, Philip

Journal Title

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Volume Title

Publisher

Australian Acoustical Society

Abstract

A pilot forensic-phonetic experiment is described which compares the performance of formant- and cepstrally-based analyses on forensically realistic speech: intonationally varying tokens of the word hello said by six demonstrably similar-sounding speakers in recording sessions separated by at least a year. The two approaches are compared with respect to F-ratios and overall discrimination performance utilising a novel band-selective cepstral analysis. It is shown that at the second diphthongal target in hello the cepstrum-based analysis outperforms the formant analysis by about 5%, compared to its 10% superiority for same-session data.

Description

Keywords

Keywords: Acoustic noise measurement; Data reduction; Sound recording; Speech analysis; Band-selective cepstral analysis; Speech recognition

Citation

URI

http://hdl.handle.net/1885/91429

Collections

ANU Research Publications

Source

Acoustics Australia

Type

Journal article

Book Title

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