Sounds and Words: Phonetics, Phonology and Morphology
2. The IPA: transcribing sounds
The International Phonetic Alphabet (IPA) gives one symbol per distinct speech sound, so a transcription is independent of spelling: English cat is [kæt], thought is [θɔːt], ship is [ʃɪp]. A consonant is fixed by the triple (voicing, place, manner): [t] is a voiceless alveolar plosive, [z] a voiced alveolar fricative, [m] a (voiced) bilabial nasal, [ŋ] a velar nasal. Square brackets [ ] mark a narrow phonetic transcription (actual sounds); slashes / / mark a phonemic transcription (the abstract contrastive units). The distinction matters: English /p/ is realised as aspirated [pʰ] in pin but unaspirated [p] in spin.
| Symbol | Voicing | Place | Manner |
|---|---|---|---|
| [p] | Voiceless | Bilabial | Plosive |
| [z] | Voiced | Alveolar | Fricative |
| [ŋ] | Voiced | Velar | Nasal |
| [tʃ] | Voiceless | Post-alveolar | Affricate |
3. Phonemes, allophones, distribution and distinctive features
A phoneme is an abstract contrastive sound unit of a language; its physically different realisations are its allophones. Two sounds are contrastive (separate phonemes) if swapping one for the other can change meaning — shown by a minimal pair, two words differing in just one sound: English pin /pɪn/ versus bin /bɪn/ proves /p/ and /b/ are distinct phonemes. Two sounds are in complementary distribution (allophones of one phoneme) if each occurs only where the other cannot, so they never contrast: English aspirated [pʰ] appears at the start of a stressed syllable and unaspirated [p] after /s/, so they are allophones of /p/. Where sounds occur in the same slot with no change of meaning, they are in free variation.
Distinctive features break sounds into the smaller binary properties ([±voice], [±nasal], [±continuant], [±sonorant], and place features) on which contrasts and natural classes are stated. A natural class is a group of sounds sharing features that pattern together in rules. The feature system lets us say precisely how two sounds differ: [p] and [b] differ only in [±voice] — a single feature — while [p] and [n] differ in several features at once (among them [±voice], [±nasal] and place). The binary, acoustically grounded feature system comes from Roman Jakobson (with Fant and Halle, 1952); Chomsky and Halle recast it in articulatory terms in The Sound Pattern of English (1968).
4. Phonological processes and modern theories
- Segmental processes change individual sounds: assimilation (a sound takes on a neighbour's features, as in English in- becoming [ɪm] before bilabials in impossible), dissimilation, deletion/elision, epenthesis (insertion), and metathesis (reordering).
- Suprasegmental (prosodic) features span more than one segment: stress, length, intonation (sentence-level pitch) and tone (lexical pitch that distinguishes word meanings, as in Mandarin). Tonal processes such as tone spreading and downstep operate on these; in Mandarin, for example, a third tone becomes a rising (second) tone before another third tone, a process called tone sandhi.
| Theory | Core idea | Associated with |
|---|---|---|
| Generative phonology (SPE) | Ordered rewrite rules map underlying to surface forms; linear feature matrices | Chomsky & Halle (1968) |
| Autosegmental phonology | Tones and features on separate tiers linked by association lines (non-linear) | John Goldsmith (1976) |
| Lexical phonology | Morphology and phonology interleaved in ordered strata; lexical vs postlexical rules | Kiparsky, Mohanan (1982) |
| Optimality Theory (OT) | Ranked, violable constraints; GEN produces candidates, EVAL picks the optimal one | Prince & Smolensky (1993) |
5. Morphemes, allomorphs, inflection and derivation
A morpheme is the smallest unit that carries meaning or grammatical function; cats has two, {cat} + {plural -s}, and unhappiness has three, {un-} + {happy} + {-ness}. A morpheme's context-dependent variant forms are its allomorphs: the English plural is /s/ after voiceless sounds (cats), /z/ after voiced (dogs) and /ɪz/ after sibilants (horses) — one morpheme, three phonologically conditioned allomorphs. Morphemes are free (can stand alone: dog, run) or bound (only attach: un-, -ness, -ed), and a word has a root plus affixes (prefixes, suffixes, and in some languages infixes inside the root and circumfixes around it). A clitic is phonologically dependent on a host yet syntactically word-like (the 's in John's gone), and a zero morph marks a category with no overt form (sheep as a plural).
Inflection versus derivation is the central split in word structure. Inflectional affixes mark grammatical categories without changing the word's part of speech or core meaning: English has a small, closed set (plural -s, past -ed, 3rd-sg -s, comparative -er, etc.). Derivational affixes build new lexemes, often changing the part of speech or adding substantial meaning: -ness makes nouns from adjectives (happy → happiness), -ize makes verbs, un- reverses meaning. Other word-formation processes include compounding (blackboard), conversion (noun google → verb to google), clipping, blending and acronymy.
| Property | Inflection | Derivation |
|---|---|---|
| Part of speech | Never changed | Often changed |
| Productivity | Fully regular, applies broadly | Often limited, with gaps |
| Position | Outside derivation (peripheral) | Closer to the root |
6. Ambiguity, interfaces, the mental lexicon and modern theories
Words can be ambiguous in two ways. Lexical ambiguity is one form with unrelated meanings (bank = riverside or financial institution). Structural (morphological) ambiguity is one string with two internal structures: unlockable is either [[un+lock]+able] 'able to be unlocked' or [un+[lock+able]] 'not able to be locked'. Constraints limit word-formation: affixes select for a base of a given category (-ness attaches to adjectives), and blocking prevents a regular form when a stored word already fills its slot (stealer is blocked by thief in the relevant sense).
The morphology-phonology interface is where word structure and sound meet: the plural allomorphs above are chosen by phonology, and some phonological rules apply only within certain morphological domains. The mental lexicon is the speaker's stored inventory of lexical items; a central debate is storage versus computation — whether complex and especially irregular words (went, mice) are stored whole while regular ones (walked) are built on the fly by rule, a dual-route view much studied in psycholinguistics.
- Distributed Morphology (Halle and Marantz, 1993): there is no separate word-building component; syntax assembles abstract morphemes and phonological material is inserted late by Vocabulary Insertion — a non-lexicalist, 'syntax all the way down' view.
- Lexicalist versus paradigm-based approaches: lexicalism keeps word-formation in the lexicon, separate from syntax; paradigm-based (word-and-paradigm) theories treat inflection as filling cells of a paradigm by realisation rules rather than by concatenating morphemes.
- Construction Morphology (Booij): words and word-formation schemas are constructions — conventional pairings of form and meaning at the word level, parallel to syntactic constructions.
Key takeaways
- Speech uses a pulmonic egressive airstream; phonation (vocal-fold vibration) sets voicing, and consonants are fixed by voicing, place and manner. Phonetics is the physical study of sound (articulatory, acoustic, auditory); phonology is how one language organises sound into a contrastive system.
- A minimal pair proves two sounds are contrastive phonemes; complementary distribution (no overlapping environments, no minimal pair) means they are allophones of one phoneme; free variation is same slot, no meaning change. Distinctive features state contrasts and natural classes: [p] and [b] differ in [±voice] alone.
- Processes are segmental (assimilation, deletion, epenthesis, metathesis) or suprasegmental (stress, length, intonation, tone). Theories: generative SPE (ordered rules, linear) — Chomsky & Halle; autosegmental (tiers) — Goldsmith; lexical phonology (strata) — Kiparsky/Mohanan; Optimality Theory (ranked violable constraints) — Prince & Smolensky.
- A morpheme is the smallest meaningful unit; allomorphs are its conditioned variants (English plural /s/, /z/, /ɪz/). Inflection marks grammar without changing word class and is regular and peripheral; derivation builds new lexemes, often changing class, and sits closer to the root.
- Lexical ambiguity is one form with unrelated senses; structural ambiguity is one string with two structures (unlockable). Blocking and category selection constrain word-formation; the mental lexicon raises the storage-versus-computation debate (irregulars stored, regulars built).
- Modern morphology: Distributed Morphology (Halle & Marantz) is non-lexicalist with late Vocabulary Insertion; lexicalist and paradigm-based theories differ on whether word-building sits in the lexicon or realises paradigm cells; Construction Morphology (Booij) treats words as form-meaning constructions.
Practice questions (17)
Attempt each one before opening the answer. Every explanation names the tempting wrong option as well as the right one, because that is where marks are lost.
In IPA terms, the sound [p] is best described as which of the following?
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Answer: B — A voiceless bilabial plosive
[p] is made with the lips (bilabial), with complete closure then release (plosive), and with the vocal folds apart (voiceless). The voiced bilabial plosive is [b]; the voiceless alveolar fricative is [s]; the voiced velar nasal is [ŋ].The sounds [p] and [b] are identical in place and manner of articulation. The single feature that distinguishes them is which of the following?
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Answer: C — Voicing, since [p] is voiceless and [b] is voiced
Both are bilabial plosives, so place and manner are identical; they differ only in [±voice] — [p] voiceless, [b] voiced. The distractors falsely assert a difference in place, nasality or manner, but on all three features [p] and [b] agree.In phonetics, phonation refers to which of the following?
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Answer: A — The activity of the vocal folds at the glottis, which produces voicing
Phonation is the behaviour of the vocal folds at the glottis: vibration gives voicing, an open glottis gives voicelessness. Shaping above the larynx is articulation; air from the lungs is the airstream mechanism; recovery by ear and brain is auditory/perceptual phonetics.Which of the following statements about speech production are correct? Select all that apply.
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Answer: A — Most speech sounds use a pulmonic egressive airstream pushed out of the lungs; B — Voicing is produced by vibration of the vocal folds in the larynx; C — The place of articulation names where in the vocal tract the airflow is obstructed
The airstream, voicing and place statements are all standard. The false statement concerns vowels: vowels are classified by tongue height, backness and lip rounding, not by the consonant place and manner labels (bilabial, alveolar, plosive and so on), so it does not belong.The English word thought is pronounced /θɔːt/. Counting every segment (phoneme) in this transcription, how many phonemes does it contain? Give your answer as a whole number.
Numerical answer — type the value.
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Answer: 3
The transcription /θɔːt/ has three segments: the consonant /θ/, the long vowel /ɔː/ (a single vowel phoneme, the length mark is not a separate segment), and the consonant /t/. The spelling has seven letters, which is the trap: phonemes are counted from the sounds, not the letters, so the answer is 3.In English, aspirated [pʰ] occurs at the start of a stressed syllable (as in pin) while unaspirated [p] occurs after /s/ (as in spin), and the two never occur in the same position. This shows that [pʰ] and [p] are which of the following?
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Answer: D — Allophones of a single phoneme /p/, because they are in complementary distribution
Because each sound appears only where the other cannot, there is no minimal pair and no meaning contrast: they are in complementary distribution and are allophones of /p/. Phonetic difference alone does not make separate phonemes, aspiration does not change meaning in English, and the distribution is strictly conditioned, not free.A linguist finds the minimal pair [tak] 'X' and [dak] 'Y', and separately finds that a nasalised vowel [ã] occurs only before nasal consonants while oral [a] occurs elsewhere. Which conclusions are correct? Select all that apply.
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Answer: A — /t/ and /d/ are contrastive and are therefore separate phonemes; B — [ã] and [a] are in complementary distribution and are allophones of one vowel phoneme; D — The distribution of the nasalised vowel can be stated as an environment: before nasal consonants
The minimal pair proves /t/ and /d/ contrast. The nasalised and oral vowels never share an environment, so they are in complementary distribution — allophones of one phoneme, with the nasalised one conditioned before nasal consonants. The claim that they must be separate phonemes merely because they differ phonetically is exactly the error complementary distribution rules out.A minimal pair is which of the following?
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Answer: A — Two words that differ in meaning and in exactly one sound in the same position
A minimal pair is two words differing in meaning and in a single sound at the same position (pin/bin), which proves that the two sounds are contrastive phonemes. Same-meaning variants are not a minimal pair; allophones in the same environment describe free variation; sounds that never co-occur are in complementary distribution.Which statements about suprasegmental features and phonological processes are correct? Select all that apply.
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Answer: A — Tone is a lexical use of pitch that can distinguish word meanings, as in Mandarin; B — Assimilation makes a sound take on a feature of a neighbouring sound; C — Stress, length and intonation are suprasegmental because they span more than a single segment
Tone (lexical pitch), assimilation (feature copying from a neighbour) and the suprasegmental status of stress, length and intonation are all correct. The false statement misdefines metathesis, which is the reordering of sounds, not deletion.Which pairing of a phonological theory with its core idea is correct?
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Answer: B — Autosegmental phonology — tones and features on separate tiers linked by association lines
Autosegmental phonology's hallmark is tones/features on separate tiers joined by association lines. The other three deliberately swap definitions: ranked violable constraints belong to Optimality Theory, ordered rewrite rules to generative phonology (SPE), and morphology-phonology interleaving in strata to lexical phonology.A theory does away with ordered derivational rules entirely, replacing them with a set of ranked, violable constraints; the grammar generates candidate outputs and selects the one that best satisfies the ranking. This describes which theory?
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Answer: C — Optimality Theory, developed by Prince and Smolensky
Replacing ordered rules with ranked, violable constraints evaluated over candidate outputs is the defining move of Optimality Theory (Prince and Smolensky, 1993). SPE is exactly the rule-based system OT reacts against; autosegmental and lexical phonology retain derivational rules.How many morphemes are there in the word unhappiness, treating happy as a single root? Give your answer as a whole number.
Numerical answer — type the value.
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Answer: 3
The word segments as un- + happy + -ness: the prefix {un-}, the free root {happy}, and the suffix {-ness}, giving three morphemes. Splitting -ness into two pieces, or missing un-, are the usual slips; the answer is 3.Which statement correctly distinguishes inflection from derivation?
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Answer: D — Inflection marks grammatical categories without changing part of speech, whereas derivation builds new lexemes and may change it
Inflection marks grammatical categories (plural, tense) without changing the part of speech; derivation creates new lexemes and often changes the category. The distractors reverse the two or wrongly claim both always change the part of speech, which inflection never does.In the words taller and teacher, the suffix spelt -er has two different functions. Which analysis is correct?
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Answer: B — In taller it is inflectional (the comparative of an adjective), while in teacher it is derivational (forming a noun from a verb)
Comparative -er on an adjective (tall → taller) is inflectional: same part of speech, a grammatical category. Agentive -er on a verb (teach → teacher) is derivational: it builds a new noun from a verb. The two -er suffixes are homophonous but functionally distinct, so the single-function answers are wrong.Which of the following statements about morphemes and allomorphs are correct? Select all that apply.
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Answer: A — The English plural morpheme has the allomorphs /s/, /z/ and /ɪz/, chosen by the preceding sound; B — A free morpheme can stand alone as a word, while a bound morpheme must attach to something; C — Allomorphs are variant realisations of a single morpheme, not separate morphemes
The plural allomorphy, the free/bound distinction and the definition of allomorphs are all correct. The false claim is that a morpheme equals one syllable: morphemes may be smaller than a syllable (the plural -s) or larger (the two-syllable root water), so there is no one-to-one match.Which attribution of a modern morphological framework is correct?
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Answer: C — Distributed Morphology (Halle and Marantz) is non-lexicalist, building abstract morphemes in the syntax with phonological forms inserted late
Distributed Morphology (Halle and Marantz, 1993) is non-lexicalist: syntax manipulates abstract morphemes and phonological material is inserted late by Vocabulary Insertion. The other options misattribute that late-insertion idea to Construction Morphology, wrongly call Distributed Morphology lexicalist, or deny Construction Morphology's own form-meaning view of words.On a spectrogram, which acoustic property is correctly linked to the height of a vowel?
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Answer: A — F1, the first formant, which is inversely related to vowel height, so that high vowels have a low F1
F1 is inversely related to vowel height: high vowels such as [i] and [u] have a low F1 and low vowels such as [a] a high F1. The tempting distractor reverses the direction of this relationship. F2 tracks frontness rather than height, and voice onset time is a cue to the voicing of stops, not to vowel quality.