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Brandeis LING 100A - Intro to Linguistics

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PhonemesAllophones.Example: flappingIntro to LinguisticsSegmental phonologyRecall:• phonetics: the physical manifestation of language in sound waves; how these sounds are articulated and perceived • phonology: the mental representation of sounds as part of a symbolic cognitive system; how abstract sound categories are manipulated in the processing of language So phonetics deals with the physiological and acoustic parts of the path between speaker and listener, while phonology resides in the brain.Phonemesphonological elements of a language = basic, distinctive sounds, also called phonemes. Phonemes for a dialect of Standard American English:• consonants: p, t, k, b, d, g, f, θ, s, h, v, ð, z, m, n, ŋ, l, r, w, j, č, ȷˇ, š, ž• vowels: i, u, I, U, ε , ə/ʌ,ɔ, æ, a, eI, aI, aU, oI, oU"distinctive" = can be used to make contrasts between different words. For the stops, using minimal pairs (words that differ in exactly one sound):pill till kill bill dill gill For the vowels (for each individual pair of vowels we could come up with a minimal pair):bead booed bid bade bowed bed bud bad bod bide Boydheed who'd hid hood head hawed had hide how'djean June jin Jane Jen John join lead lewd lid laid load lead lad lod loud LloydAnd for the nasals: rum run rung Allophones.There are often differences in the way a phoneme is pronounced in a specific context. The variant pronunciations are called allophones ("other sounds"). 1When it's important to make this difference:• we'll use [square brackets] to indicate sounds from a phonetic point of view, i.e. focusing on their physical properties and the details of actual pronunciation; • and we'll use /slashes/ to indicate sounds from a phonological point of view, i.e. as part of an abstract representation independent of potential differences in the way the sound in pronounced in specific contexts. • I.e., [ ] = allophone, / / = phoneme. A classic example of sound alternation in English relates to the [s] found at the beginning of a syllable before a voiceless stop.spin is basically pin with [s] added, but the /p/ in each case is pronounced differently.• pin contains an aspirated version of /p/, with a puff of air after the stop is released; [ph] • spin contains a plain /p/, without a puff of air after the stop; this is written just [p] The same is true for pairs like pit~spit, pot~spot, pair~spare, etc.A simple statement of this alternation is as follows:the phoneme /p/ becomes:allophone [p] immediately following [s]allophone [ph]at the beginning of the wordBut the same generalization holds not just for /p/ but for the other voiceless stops, /t/ and /k/. Compare these word pairs:• top~stop, take~stake, tie~sty, etc. • kin~skin, cope~scope, can~scan, etc. So more accurately, there's a single general statement that covers all these cases, stated in terms of natural classes.voiceless stops are:unaspirated immediately following [s]aspiratedat the beginning of the wordDistribution of sounds: identifying phonemes and allophonesHow do we know that aspirated and unaspirated voiceless stops are not different phonemes? Same way Lois Lane knew Clark Kent was the Superman: they never appear at the same place in the same time. = complementary distribution.2• complementary distribution: never at the same place in the same time, predictable• contrastive distribution: overlapping environments, minimal pairs• free variation: overlapping environments, no change in meaning = not contrastiveExpanding: voiceless stops are aspirated when they occur syllable-initially and are followed by a stressed vowel (rápid, raph ídity); & word-initially regardless of stress (photháto). At the beginning of a word, a preceding /s/ prevents the stop from being syllable- or word-initial.Different stresses cause alternations: underlying sound /t/ is pronounced as [t] etc. or [th] etc.rápid [p] rapídity [ph]authéntic [t] authentícity [th]récord [k] recórd [kh]This process is completely unconscious for most speakers, and often quite hard to unlearn.English speakers who learn a language like French or Spanish impose aspiration according to this rule; but that's wrong for these languages, and sounds foreign.Similarly, a French or Spanish speaker learning English will typically fail to produce aspiration in the right places; this is part of what it means to have a foreign accent.Aspiration in English is a small example of what phonological knowledge consists of:• it's learned unconsciously by children imitating (quite accurately!) the details of the language around them • it's systematic, applying to all words with voiceless stops, not just some random selection • it's defined in terms of a natural class (here "voiceless stops") rather than some arbitrary set of three consonants The study of phonology is largely the investigation of alternations like this -- what changes occur, what sounds undergo them, and in what contexts.Example: flappingA prominent feature of American English affects /t/ and /d/, and is called flapping. A flap is a quick motion with the tongue against the alveolar ridge.All these English words have flaps where "t" or "d" is written in the spelling (relevant dialects).butter caddy3pretty buddylittle waterThe proper phonetic symbol for a flap is ɾ - it's an "r" missing the top left serif.For most speakers, in the right context a phonological /t/ will end up sounding phonetically just like a phonological /d/, since both become a flap [ɾ] (voiced), as these homophones show:latter laddermatter maddermettle meddlebetting beddingoutty (belly button) Audi (car)And the answer in this exchange is therefore ambiguous:-- Do you want the ladder or the chair? -- Give me the [læɾr].Of course, /t/ and /d/ don't always end up as flaps: minimal pairs illustrate.hit hidtin dintear daremelting meldingattain A DaneWhat context causes flapping to occur? There are two conditions:1. The /t/ or /d/ has to be between vowels (this includes a syllabic [r] or [l]) o so not in hit, melting 2. The following vowel has to be unstressed. o so not in tin, attain If you compare the list of homophones (with flapping) vs. minimal pairs (without flapping), you'll see that only the homophones satisfy both these conditions.The same basic word (or word root, or morpheme) can change. This includes adding a vowel:sit [t] sitting, sitter [ɾ]4spot [t] spotty [ɾ]mad [d] madder, maddest [ɾ]bird [d] birdy [ɾ]As well as moving the stress


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