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spreading (n.)
المؤلف:
David Crystal
المصدر:
A dictionary of linguistics and phonetics
الجزء والصفحة:
449-19
2023-11-20
949
+
-
20
spreading (n.)
A term in the classification of lip position in PHONETICS, referring to the visual appearance of the lips when they are held fairly close together and stretched sideways, as in a slightly open smile. Spread lips are noticeable in CLOSE VOWELS, as in the [i] of see, and contrast with NEUTRAL, OPEN and ROUNDED lip positions. A similar use of the term is found in relation to GLOTTAL aperture, which may be described as varying between spread (wide) and CONSTRICTED (narrow). Sounds which are [+spread glottis] are produced with audible glottal FRICTION, as in English aspirated STOPS.
In some models of NON-LINEAR PHONOLOGY, spreading refers to the ASSOCIATION (or LINKING) of a FEATURE or NODE belonging to one SEGMENT with an ADJACENT segment; the disassociation of a feature or node from a segment is called delinking. The notion is of particular importance in the study of ASSIMILATION, where the effect of spreading produces an output REPRESENTATION with multilinked nodes, and DISSIMILATION, where a feature or node is delinked from a segment, and the orphaned node is later deleted. AUTOSEGMENTAL spreading also accounts for COMPENSATORY LENGTHENING in a CV framework.
In AUTOSEGMENTAL PHONOLOGY, spreading refers to a type of RULE which extends the association of a TONE in a given direction, e.g. a high tone associated with an initial VOWEL comes to be associated with the following vowel(s). Spreading is indicated by an arrow in the autosegmental rule, pointing to the right for unbounded rightward spreading, and to the left for unbounded leftward spreading:
الاكثر قراءة في Phonetics
اخر الاخبار
اخبار العتبة العباسية المقدسة
الآخبار الصحية
مواضيع ذات صلة
(نوافذ).. إصدار أدبي يوثق القصص الفائزة في مسابقة الإمام العسكري (عليه السلام)
قسم الشؤون الفكرية يصدر مجموعة قصصية بعنوان (قلوب بلا مأوى)
قسم الشؤون الفكرية يصدر مجموعة قصصية بعنوان (قلوب بلا مأوى)
