The suitability of voiceless fricative spectra for forensic voice comparison is explored within a Likelihood Ratio-based framework. Non-contemporaneous landline telephone recordings of 99 male Japanese speakers are compared using only tokens of their voiceless alveolo-patalal fricative . A subset of mean-cepstrally-subtracted LPC CCs from the fricative spectrum from dc to 5 kHz is used. GMM/UBM and multivariate likelihood ratios are extracted for the 99 target and 4851 non-target trials, and fused with logistic regression. An EER of 7.4% and log-LR cost of 0.26 is demonstrated. It is concluded that the  spectrum does have some individualising potential.
|Publication status||Published - 2011|
|Event||International Conference on Acoustics, Speech and Signal Processing (ICASSP 2011) - Prague Czech Republic|
Duration: 1 Jan 2011 → …
|Conference||International Conference on Acoustics, Speech and Signal Processing (ICASSP 2011)|
|Period||1/01/11 → …|