![]() ![]() ![]() Let's discuss the airstream process first. c) the oro-nasal process-the modification of that flow of air in the vocal track (from the glottis to the lips and nose). b) the phonation process-the behavior of the vocal cords in the glottis during the production of the sound. This involves 3 processes working together: a) the airstream process-the source of air used in making the sound. Thus, all speech sounds result from air being somehow obstructed or modified within the vocal tract. Actually only a few hundred different sounds or types of sounds occur in languages known to exist today, considerably fewer than the vocal tract is capable of producing. None are made outside of it (such as by stomping, hand clapping, snapping of fingers, farting, etc.) Theoretically, any sound could be used as a speech sound provided the human vocal tract is capable of producing it and the human ear capable of hearing it. (Use transparancy to discuss organs of speech oral, pharyngeal and nasal cavities articulators, lungs and diaphragm). Articulatory Phonetics We will spend the next few days studying articulatory phonetic: what is involved in the actual movement of various parts of the vocal tract during speech.
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