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Aspiration
Aspiration [ʰ]
Voiceless stops /p, t, k/ get a puff of air when they are at the beginning of a stressed syllable or if they are word initial
Examples: pip [pʰɪp], test [tʰɛst], kick [kʰɪk].
Not after /s/ (spin [spɪn]).
Unaspiration
Voiceless stops /p, t, k/ have no aspiration when they follow /s/.
Examples: spew, stew, skew.
Devoiced voiced obstruents [̥]
Sounds written as voiced (/b, d, g, v, ð, z, ʒ/) are only partly voiced (or completely voiceless) Especially utterance-initially, at the end of an utterance or before a voiceless sound.
Examples: improve (the /v/), add two (the /d/).
Devoiced approximants [̥]
Approximants /w, r, j, l/ become (partly) voiceless after syllable-initial /p, t, k/ Right after a word-initial or stressed-syllable-initial voiceless stop (pray [pɹ̥eɪ], play [pɫ̥eɪ]).
Examples: play [pɫ̥eɪ], twin [tw̥ɪn], cue [kj̥u].
Unreleased stops [̚]
Stops are not exploded (no release burst) when they come before another stop. (oral/nasal)
Examples: apt [æp̚t], rubbed [rʌb̚d].
Glottal stop accompaniment [ʔ] or [ˀ]
In many accents, syllable-final /p, t, k/ are produced with a simultaneous glottal stop.
Examples: tip [tɪʔp], pit [pɪʔt], kick [kɪʔk].
Glottal stop replacement [ʔ]
/t/ is often completely replaced by a glottal stop before an alveolar nasal in the same word.
Example: beaten [ˈbiʔn̩].
Syllabic nasals [̩]
Nasals become syllabic (act as a vowel) at the end of a word when right after an obstruent.
Examples: leaden [ˈlɛdn̩], chasm [ˈkæzm̩].
Syllabic liquids [̩]
Liquids /l, r/ become syllabic at the end of a word when right after a consonant.
Examples: paddle [ˈpædl̩], hammer [ˈhæmɹ̩], tailor [ˈteɪlɹ̩].
Flapping / Tapping [ɾ]
Alveolar stops /t, d/ (and sometimes /nt/) become a quick voiced tap between two vowels when the second vowel is unstressed.
Examples: fatty [ˈfæɾi], data [ˈdeɪɾə], winter ≈ winner.
Dentalization [̪]
Alveolar consonants become dental when they come before a dental consonant (/θ, ð/).
Examples: eighth [eɪt̪θ], tenth [tɛn̪θ], wealth [wɛl̪θ], at this [æt̪ ðɪs].
Longer voiceless obstruents
Voiceless obstruents are longer than their voiced counterparts at the end of a syllable.
Examples: cap is longer than cab; back is longer than bag.
Any consonant is longer when it is at the very end of a phrase.
Vowel length – basic rule
A vowel is longest in an open syllable (no consonant after it), medium length before a voiced consonant, and shortest before a voiceless consonant.
Examples: sea (longest) > seed > seat (shortest)
Same pattern: sigh > side > site
Vowel length – stress effect
Vowels are longer in stressed syllables than in unstressed syllables (everything else being equal).
Example: the [oʊ] in below (stressed) is longer than the [oʊ] in billow (unstressed).
Vowel length – number of syllables
Vowels are longest in one-syllable words, shorter in two-syllable words, and shortest in words with three or more syllables.
Example: speed > speedy > speedily
Voiceless reduced vowels
A reduced (unstressed) vowel can become voiceless after a voiceless stop (and often before another voiceless stop).
Examples: potato, catastrophe, permission, tomato (the schwa can be whispered or almost silent).
Vowel nasalization [̃]
Vowels become nasalized when the syllable is closed by a nasal consonant.
Examples: man [mæ̃n], sing [sɪ̃ŋ], home [hoʊ̃m]
(The velum lowers early, so air flows through the nose during the vowel.)
Vowel retraction before dark /l/ [ɫ]
Front vowels (and some others) become noticeably retracted (pulled backward) before a syllable-final dark /l/.
Examples:
heed vs. heel
paid vs. pail
pad vs. pal
In narrow transcription this can look like: peel [pʰiəɫ], pail [pʰeəɫ], pal [pʰæəɫ].
Syllable
Simple ways to detect / count syllables
Clap or tap method
Say the word slowly and clap once for each vowel sound you hear.
Examples:
cat → 1 clap
happy → 2 claps (ha-ppy)
banana → 3 claps (ba-na-na)
Chin method
Put your hand under your chin and say the word. Each time your chin drops, it is usually a new syllable.
Vowel method
Count the number of vowel sounds (not vowel letters).
boat has 1 vowel sound → 1 syllable
beautiful has 3 vowel sounds → 3 syllables
Syllabic consonants
Sometimes a consonant (especially /n/, /l/, or /r/) acts as a syllable by itself (no clear vowel).
Examples:
button → 2 syllables [ˈbʌʔn̩]
bottle → 2 syllables [ˈbɑɾɫ̩]
rhythm → 2 syllables [ˈɹɪðm̩]