Talker differences as they appear in correlation matrices of continuous speech spectra
K.-P. Li, George W. Hughes · The Journal of the Acoustical Society of America · 1974
The properties and measurement of intertalker and intratalker variability among correlation matrices derived from spectra of continuous speech are described. Measures of difference between two matrices are applied to quantify talker variability. These measures of difference are consistently less for intratalker data than for intertalker comparisons. For a population of 30 talkers, the distributions of these differences show about 1% overlap to confound absolute identification of a given talker. The effects of spectral shaping and sample size are discussed, and applications to talker identification and normalization schemes suggested.