Evaluation of cochleograms for the speaker identification in forensic Phonetics

Abstract

The present study evaluates the possibility to use cochleagrams (a graphic representation of the sounds that represents the excitation pattern of the basilar membrane by unity of time, and reflect in some way the human audition) as a tool to identify speakers. Results from the comparison of cochleagrams by means of Pearson’s correlation coefficients show a global discriminating trend (intra-speaker variation is minor that inter-speaker variation). Likewise, it is shown that better results are obtained in the comparison of hesitation sounds than in single words.