Human perception of alcoholic intoxication in speech
نویسندگان
چکیده
In this paper we describe a perception experiment on intoxicated and sober speech of 161 speakers recorded in the German Alcohol Language Corpus. 72 listeners achieved an average discrimination rate of 63.1% when asked to choose from pairs of stimuli which one sounded intoxicated. Perception results were not gender-dependent and no hidden effects were found in a control group test. Since earlier studies reported higher fundamental frequency for intoxicated speakers, the influence of fundamental frequency as a potential acoustic cue in human perception of intoxication was analyzed. Results show a significantly higher detection rate for speakers who produce a higher fundamental frequency when being intoxicated, and a higher success rate for listeners who show a general preference for choosing the stimulus with higher fundamental frequency. However, human listeners do not consistently exploit this acoustic cue, since a simple algorithm which always classifies the stimulus with higher fundamental frequency as intoxicated would lead to a better performance of 82% discrimination rate.
منابع مشابه
Fundamental frequency and human perception of alcoholic intoxication in speech
The majority of speakers raise their fundamental frequency when speaking while intoxicated. In this study we describe three perception experiments based on manipulated sober and intoxicated speech from the German Alcohol Language Corpus to answer the question whether human listeners use fundamental frequency as a cue to recognize an intoxicated person. Our results show that although fundamental...
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