Detection of Alcohol in Speech Signal using LF Model

M. Sigmund, A. Prokes, and P. Zelinka (Czech Republic)


Speech signal, glottal flow analysis, alcohol detection


Speech changes resulting from alcohol intoxication were investigated in recorded clean speech using the Liljencrant-Fant model of glottal pulses. For use in our experiments, a new collection of intoxicated speech at two levels of intoxication was created. All vowels were tested individually. In person independent experiments, analysis of vowel excitation appears to be a useful technique to provide evidence of alcohol consumption of over 1‰ of blood-alcohol concentration.

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