SPA 3011 Lecture Notes - Lecture 3: Vocal Folds, Fundamental Frequency, Ossification
20 Oct 2016
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Document Summary
In quiet breathing, we spend equal times exhaling and inhaling. We use a greater volume of air in speaking. /h/ sound has more stress, emphasis and the greatest flow of air. When speakers produce rhetorical questions, they tend to produce it slightly faster than statements. Females: a loss of estrogen means a lower fundamental frequency. Males: lower fundamental frequency has to do with the cartilage ossification becoming stiffer (turning to bone) First stage: the muscles of inspiration are still active. Second stage: the muscles of inspiration cease activity and the air coming out of the lungs is simply due to the elastic recoil of the lungs. Third stage: the muscles of expiration come into place, squeezing the remaining air to try and keep the subglottal air pressure constant over the length of the sentence. Most speech disorders result in an insufficient air volume for the purpose of speech production.
