Psychology 2115A/B Lecture Notes - Lecture 17: Voice-Onset Time, Spectrogram, Categorical Perception

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Lecture 17 (final- 2 questions from each of the other sections from the course) Because you cant find the consonant on the spectrogram, same with linearity and acoustic variance. So how do we understand speech we perceive by production, filter everything through our production apparatus (motor theory) Speech has regularities in it we just haven"t discovered all of them, there is a voice onset time, the difference between the p phoneme and the b phoneme. The difference the time that the stop goes, to the time voicing goes on is different. Ba is the instant the voice starts, pa there is a lag. Therefore there is a suggestion that there is a voice onset time lag. Eimas and corbet: 1973 (feature theory) (example of categorical perception) Assuming there are these cells that respond to long and short onset time we should be able to create a fatiguing process and show that these things really do exist.

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