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Conference Paper

A homogeneity study of the LTASS Measurand

Authors: Zjalic, James

AES 2024 International Conference on Audio Forensics · Paper 7 · June 2024

Abstract

This paper presents the methodology and results of a study into the natural variability of the Long Term Average Sorted Spectrum (LTASS) parameter and the relationships between the content, duration and magnitude of an audio recording with such. The results show that both the repeatability and reproducibility are source dependent, and the stability of the parameter decreases as increased variability in the content, duration and magnitude is introduced. The study is a small part of a larger research effort into the use of Likelihood Ratios when evaluating the question of source problem within audio forensics.

Details

Published in
AES 2024 International Conference on Audio Forensics
Paper number
7
Publication date
June 17, 2024
Session subject
Audio Authentication; LTASS; Likelihood Ratios
Affiliation
Verden Forensics, 44/45 Calthorpe Road, Edgbaston, Birmingham, B15 1TH (See document for exact affiliation information.)
Type
Conference Paper