Review of articulatory phonetics Flashcards
Phonetics
is the study of physical, physiological,
and acoustic variables associated with speech sound
production.
Articulatory phonetics
study of how speech
sounds are produced. Physiological systems such as
the vocal tract and related anatomical structures are
studied in order to understand production of speech
sounds.
Knowing how sounds are produced allows SLPs to
administer basic speech sound analysis and
understand the speech errors.
Phone
any sound that can be produced by the vocal tract
(may or may not be a speech sound)
Allophone
a variation of a phoneme, not a distinct phoneme,
it does not change the meaning of a word
Allophonic variations
occur when the same phoneme is
produced in different phonetic contexts (e.g. “t” in the word
“tea” in sentences “he has tea” vs. “I loathe tea”; lingual-
alveolar contact vs. lingual-dental contact).
Free variations
can be exchanged for one another in a certain phonetic context
without affecting the word ; allophones of /t/ can occur in free
variation in word-final position: in “bat”, /t/ sound may be
released with a small burst of air or it may be unreleased.
Complementary distribution
some allophonic variations
occur in specific phonetic contexts but not in others. They
cannot be exchanged for one another (top vs stop).
IPA
Narrow phonetic transcription
Broad phonetic
transcription
IPA – international phonetic alphabet, an alphabetical
transcription system (table 3.1).
IPA is used by SLPs to transcribe sound production and
transcribe the varieties of speech sound errors (using
narrow phonetic transcription)
IPA is used to provide one to one correspondence between
speech sound and symbol. Broad phonetic
transcription represents standard IPA symbols.
Narrow phonetic transcription – detailed form of
transcription; assists in highlighting allophonic variations,
using diacritical markers (e.g. aspirated vs. unreleased:
phoneme ”t” in the words “top” vs “stop”; ). (Table 3.2).
Highlights: dentalization, palatalization, aspiration, voicing
and etc.
Morpheme
minimal unit of meaning, the smallest
unit of language carrying semantic interpretation (free
vs bound) ( Pena-Brooks & Hedge, 2015)
Phonemes make a difference in morphemes. How?
Words/Morphemes that differ by one phoneme, in a
similar phonetic context, are called minimal pairs.
Morphophonemics
Morphophonemics – sound changes that result from
modifications of free morphemes. Morphophonemic rules
determine how sounds are combined to form morphemes.
Free morphemes may combine with bound morphemes.
Example of a rule: regular plural inflection /s/ is produced as
/s/ if the word ends in a voiceless sound (cups, hats), but it is
produced as /z/ if the word ends in a voiced sound (dogs,
bags). Similar rules apply to the regular past tense inflections,
possessive bound morpheme, and the regular third-person
present tense.
Phonotactic rules
determine speech
sound combinations in a particular
language. Phonotactic constraints: the
phoneme use is restricted , phonemes are
not used in all possible word positions,
depending on the language. (e.g. /b/ and
/g/ sounds cannot be combined to initiate
or terminate words in English.
Coarticulation
Words are produced differently in isolation (citation
form) than in connected speech, due to
coarticulation
Coarticulation – influence that sounds have on one
another when linked together to make words,
phrases, and sentences; sounds are affected by
phonetic contexts and may change or overlap (Pena-
Brooks & Hedge, 2015)
Vowels:
speech sounds that are produced without
significant constriction of the oral and pharyngeal
cavities. Vowels are often labeled open sounds
(vocoids)
Consonants:
speech sounds produced with
significant constriction within the oral and
pharyngeal cavities. Results in closure or narrowing
of the vocal tract (closure - /b,p/; narrowing - /f, l/.
Often labeled constricted sounds (non-vocoids).
Difference in vowel quality
Vowels can be monophthongs and diphthongs
Difference in vowel quality –
monophthongs: vowels with relatively constant
quality throughout their production.
Diphthongs: vowels in which the quality changes
during production .
Vowels have more acoustic intensity (more
sonorous than consonants)
Vowels serve as carriers of syllables and are called
syllabic. Vowels can form syllables and words (e.g.
eye, awe, you ).