01:615:371 Lecture Notes - Acoustic Wave, Speech Perception, Subjective Constancy
24 Nov 2013
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Document Summary
Review the website and check out the exercises which are meant to help with the material, it is not homework. Last lesson covered lack of invariance as in repeating. The wave form associated with different speech sound can vary tremendously, a male voice vs. a female voice, etc. Coarticulation is when your mouth in pronouncing the /d/ in deeh dah or doo even though they start with the same phoneme, the wave form is very different. The red lines in the powerpoint tell you where the most energy is for the major frequencies. Despite this, we have perceptual constancy since we hear dee/doo as sounding the same. This is one of the mysteries, why do we as humans hear them as being the same thing, even though acoustically they are very different. We don"t know the answer, but there are theories and there is varying data to support them all.
