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Introduction to Linguistics. Week 5. Phonetics. Description of Sounds. Definition and scope. Phonetics is the study of the production and perception of speech sounds. It is concerned with the sounds of language, how these sounds are articulated and how the hearer perceives them.
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Introduction to Linguistics Week 5 intro to ling/ssn/2007
Phonetics Description of Sounds intro to ling/ssn/2007
Definition and scope • Phonetics is the study of the production and perception of speech sounds. • It is concerned with the sounds of language, how these sounds are articulated and how the hearer perceives them. • Phonetics is related to the science of acoustics in that it uses much the same techniques in the analysis of sound that acoustics does intro to ling/ssn/2007
Fields • articulatory phonetics → deals with the configurations of the vocal tract used to produce speech sounds; studies the physiological mechanisms of speech production • acoustic phonetics → studies speech sounds in terms how we hear them → measuring and analyzing the physical properties of sound waves we produce when we speak • Auditory Phonetics → the study of the perception of speech sounds. intro to ling/ssn/2007
Units of Representation • Feature: subunit of segment, reflects individual aspect of articulatory control produced by articulation • Segment: individual speech sound • Syllable: a segment of speech that consists of a vowel, with or without one or more accompanying consonant sounds immediately preceding or following intro to ling/ssn/2007
Phonetic Transcription • IPA (International Phonetic Alphabet) → represents each sound of human speech with a single symbol e.g. [ə] ; [θ] Why do we need the IPA? intro to ling/ssn/2007
We need a system for recording speech sounds accurately. English spelling is very inconsistent. • Same sound [i], different letters e.g. see, sea, scene, receive, thief, amoeba, machine • Same letters, different sounds e.g. sign [s], pleasure [ʒ], resign [z] • One sound, multiple letters e.g. lock [k], that [ð], book [ʊ], boast [o], shop [ʃ] • One letter, multiple sounds e.g. exit [gz], use [ju] • Silent letters e.g. know, doubt, though, island intro to ling/ssn/2007
Sound Classes Based on the phonetic properties shared: • Vowels • Consonants • Glides intro to ling/ssn/2007
closure larynx place Bilabial Labiodental Interdental Alveolar Lateral Palatal Velar Glottal Stop voicelessvoicednasal pbm tdn kgŋ Fricative voicelessvoiced fv θð sz ʃʒ Affricate voicelessvoiced čǰ Approximant voicelessvoiced ʍw r l j h English Consonants intro to ling/ssn/2007
tongue root height Front Central Back place Unrounded Unrounded Unrounded Rounded lips High tenselax iɪ uʊ Mid tenselax eɛ ʌ oɔ Low lax æ ɑ English Vowels intro to ling/ssn/2007
Figure out the differences between consonants and vowels in the following words. • take – above • cart – at • think – ugly • bell – open • feel – eel intro to ling/ssn/2007
Vowels are produced with relatively little obstruction in the vocal tract (-obstruent) are more sonorous (+sonorant) Consonants are produced with a narrow or complete closure in the vocal tract (+obstruent) are less sonorous (-sonorant) Major Differences intro to ling/ssn/2007
Glides • Shows properties of both consonants and vowels → rapidly articulated vowels → vowel-like in articulation → pattern/function as consonants • Sometimes are called semivowel and semiconsonant e.g. yet; wet intro to ling/ssn/2007