Articulation students 2R-1

Articulation students 2R-1 - Articulation Articulation is...

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Unformatted text preview: Articulation Articulation is the movement and placement of the articulators to shape the vocal tract. The buzz produced by the vibrating vocal folds is shaped into sounds or phonemes by the articulatory system. As the laryngeal or glottal vibrations travel superiorly through the vocal tract, they are selectively attenuated so that certain frequencies are transmitted more strongly than others. Vocal tract = pharyngeal, nasal, & oral cavities Articulation sites Bilabials = Labiodental + Interdentals = Lingual alveolars = Palatals = Velars = Glottal = Source-filter theory = explains how glottal tone is changed into speech sounds by the vocal tract. The three cavities of the vocal tract can change shapes due to moveable articulators The changes in shape cause resonant frequencies to change. Resonant frequency = frequency that cavity responds to most effectively Example: bottle with water* /s/ vs /sh/ Which has a lower frequency? http://www.uiowa.edu/~acadtech/phonetics/# See articulation anatomy on the website above. With consonants, sources of sound can include turbulence of frication with or without voicing. Articulators are movable or not movable THE ARTICULATORS First we will examine the framework and muscles, then relate structures to speech production SKULL = supportive framework Composed of 22 bones. All except mandible are rigidly joined together by sutures* Main sutures = coronal. sagittal, lambdoidal, and squamosal suture Coronal = divides skull into front and back; between frontal and parietal bones Sagittal = divides skull in L and R; between the two parietal bones Lambdoidal = between parietal and occipital bones; shaped like Greek letter Squamosal = between parietal and temporal bones Identify these sutures on the next two slides Sutures = joints that are immoveable Lambdoidal = occipital Lateral view What sutures are shown? Bones of Facial Skeleton Mandible 1 Maxillae 2 Nasal 2 Palatine 2 Lacrimal 2 Inferior conchae2 Vomer 1 Zygomatic 2 Other bones make up facial/cranial bones: 3 auditory bones (incus, stapes, and malleus) Use www.visiblebody.com, head region demo to help you learn the cranial and facial bones 1. Mandible Mental symphysis = two parts fused here Mental protuberance = midline; creates triangular eminence (prominence) Mental foramen Corpus Angle Ramus Coronoid process Condylar process (articulates with temporal bone, allowing rotation of mandible) Mandibular foramen (inner aspect) (branch of Trigeminal, CV, goes through here to provide sensory innervation to teeth and gums) Mylohyoid line (mylohyoid muscle inserts here) Mandibular hypoplasia and micrognathia May cause some instances of cleft palate Can be corrected surgically or with distraction osteogenesis Hemifacial microsomia Hemifacial Microsomia Characteristics Hemi = half, although present in bilateral condition...
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This note was uploaded on 05/16/2011 for the course SPA 3101 taught by Professor Carson,d during the Spring '08 term at University of Central Florida.

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Articulation students 2R-1 - Articulation Articulation is...

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