By default Praat considers that the minimum pitch value to be detected is 75 Hz which leads to an analysis window of 40 ms. In general, voiced sounds (in languages other than English) will have a VOT which is negative. Voice Onset Time (VOT) has been used by researchers as an acoustic measure in order to gain some understanding about the impact of different motor speech disorders in speech production. This paper contains a thorough description of the 'progressive cutback and replacement' method of VOT manipulation, and comparison with other VOT manipulation techniques. If the start of voicing came before the stop release, the VOT is negative. The Journal of the Acoustical Society of America Voice onset time (VOT) is an acoustic property of stop consonants that is commonly manipulated in studies of phonetic perception.
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