,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,语音学音位学,主讲：卢生,语音学音位学主讲：卢生,1,PHONETICS,What is the Phonetics?,Phonetics studies speech sounds,including the,production of speech,that is how speech sounds are,actually made,transmitted and received,the discription,and classification of speech sounds,words and connected,speech,etc.,PHONETICSWhat is the Phonetics,2,Three main areas,ARTICULATORY PHONETICS(发音语言学)is study of the production of speech sounds.,ACOUSTIC PHONETICS(声学语言学)is the physical properties of the speech sounds.,PERCEPTUAL or AUDITORY PHONETICS(感知，听觉语言学)is concerned with the perception of speech sounds.,Three main areasARTICULATORY P,3,The organs of speech,Nasal cavity-,鼻腔,Mouth cavity-,口腔,Tongue-,舌,Lips-,唇,Teeth-,齿,The teeth ridge-,齿龈,The hard palate-,硬腭,The soft palate-,软腭,uvula-,小舌,Pharynx-,咽头,Larynx-,喉头,The vocal cords-,声带,Windpipe-,气管,The organs of speechNasal cavi,4,咽 口 鼻,构成(pharynx,mouth,nose)声道中的三大,声腔,(vocal tract)。发音以,气流（,airstream,）,作为能量来源。,器官的顶端是喉，喉部有,声带,（vocal band）,咽 口 鼻 构成(pharynx,mouth,nose)声道,5,声带的三种状态,分离：声带分离，气流通过，清音或,不带声音,（voiceless）即辅音【p s t】,贴近：声带贴近，气流振动，,带声音,(voiced)，浊音,b z d,即为带声辅音。,紧闭：声带紧闭，气流无法通过，即为声门塞音,声带的三种状态分离：声带分离，气流通过，清音或不带声音（vo,6,The classification of Speech sounds,The organs of speech are capable of,making many different kinds of speech,sounds.From the practical standpoint,speech sounds are generally divided into,Vowels,and,Consonants,.,The classification of Speech s,7,元音和辅音,Vowels are sounds produced without obstruction of the air stream in the mouth.In producing them there is vibration of the vocal cords,so all vowels are voiced.,In English there are twenty vowels in all.,Consonants are sounds produced by some form of obstruction of the air passage and be either voiced or voiceless.,There are twenty-eight consonants in English.,元音和辅音 Vowels are sounds prod,8,辅音,发音方式，指完成发音过程的方法.,塞音（或爆破音）STOP or PLOSIVE,【p b t d k g】,鼻音（NASAL）【m n】,擦音（FRICATIVE）【f v z h】,近音（APPROXIMANT）【w j】,边音（LATERAL）【l】,辅音发音方式，指完成发音过程的方法.,9,颤音（TRILL）【r】,触音（TAP）【t d n】city,塞擦音（AFFRICATE）【ts dz tr dr】,church【t】,颤音（TRILL）【r】,10,发音部位指辅音的发音位置，辅音可以产生于唇与声带间的任何部位。,在国际音标中区分了11个发音部位。,双唇音（BILABIAL）【p b m】pet，bet,唇齿音（LABIODENTAL）如fire中【f】,齿音（DENTAL）【】,齿龈音（ALVEOLAR）【t d n s r l】,齿龈后音（POSTALVEOLAR）【】,发音部位指辅音的发音位置，辅音可以产生于唇与声带间的任何部位,11,卷舌音（RETROFLEX）,硬腭音（PALATAL）yes yet中的【j】,软腭音（VELAR）cat get中的【k g】,小舌音（UVULAR）法语中的【r】,咽音（PHARYNGEAL）,声门音（GLOTTAL）,卷舌音（RETROFLEX）,12,元音,English vowels are divided into two large groups:,Monophthongs(pure vowels)（单元音）,Diphthongs（双元音）,元音 English vowels are divided,13,Monophthongs,There are12 monophthongs.classified according to the following principles:,1)The height of the raised part of the tongue:we distinguish open vowels,half-open vowels,half-close vowels and close vowels.,2)The part of the tongue raised:we distinguish front,back and central vowels.,3)The length of the vowel:we distinguish long vowels and short ones.,4)The position(or shape)of the lips:we distinguish rounded vowels（圆唇元音）and unrounded ones.,5)The degree of tenseness:we distinguish tense（紧张）vowels and lax vowels（宽松）.,MonophthongsThere are12 monoph,14,The Front Vowels,There are 4 front vowels in English:,/i:/,/i/,/e/,/.,/i:/is a long,close front vowel.It is unrounded and tense.【,sea leave,】,/i/is a short,half-close front vowel.It is unrounded and lax.【ship happy】,/e/is a short,half-open,unrounded front vowel.It is a lax.【,heavy any】,/is a short,open,unrounded front vowel.It is a lax.【,land family,】,The Front VowelsThere are 4 fr,15,The Back Vowels,There are five back vowels in English:,/a:/,/:/,/,/u:/,/u/.,/a:/is a long,open,unrounded back vowel.【class glass】,/:/is a long,half-open,rounded back vowel.It is slightly tense.【,door floor】,/is a short,open,rounded,lax back vowel.【,wash what】,/u:/is a long,close,rounded,tense back vowel.【,blue ruler,】,/u/is a short,half-close,rounded,lax back vowel【,foot good】,The Back Vowels,16,The central Vowels,There three central vowels in English:,/,/:/,/.,/is a short,half-open,unrounded central vowel.It is a lax one.【couple double】,/:/is a long,half-close and half-open,unrounded,tense central vowel.【learn early】,/is a short,half-open,unrounded,lax central vowel.It only occurs in unstressed syllables.【away over】,The central VowelsThere three,17,Diphthongs（双元音）,There are three centring diphthongs:,/i/,/,/,u,/,/i/glides from/i/to/,/.The lips are spread throughout.【idea here】,/glides from a point between/e/and/.The lips are spread.【pear wear】,/,u,/【sure】,Diphthongs（双元音）There are three,18,The closing Diphthongs,合口双元音,There are five closing diphthongs in English.,/ei/,/ai/,/i/,/u/,/au/,/ei/begins with/e/and glides smoothly to/i/【,stay say】,/ai/glides from/a/to/i/.It is smooth and loudness becomes less as it progresses.【,by shy】,/i/glides from a position between/and/:/,to/i/.【,boy toy】,/u/starts with/:/and then glides away to/u/with the lips getting slightly rounded.【,boat coat】,/au/starts with/a/and then glides away to/u/with the lips getting slightly rounded.【,house mouse】,The closing Diphthongs合