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Phonological Processes

Table 2
Phonological Processes in Typical Speech Development

Phonological
Process
Example
 
Description
 
Pre-vocalic voicing car = gar
A voiceless sound preceding a vowel is replaced by a voiced sound.
Word final devoicing red = ret A final voiced consonant is replaced by a voiceless consonant
Final consonant deletion boat = bo A final consonant is omitted (deleted) from a word.
Velar fronting car = tar A back sound is replaced by a front sound.
Palatal fronting ship = sip sh or zh are replaced b y s or z respectively
Consonant harmony cup = pup The pronunciation of a word is influenced by one of the sounds it 'should' contain.
Weak syllable deletion telephone = teffone Weak (unstressed) syllables are deleted from words of more than one syllable.
Cluster reduction try = ty A cluster element is deleted or replaced.
Gliding of liquids ladder = wadder Liquids are replaced by glides.
Stopping ship = tip A stop consonant replaces a fricative or affricate.

suprasegmental stress intonation juncture

"It a'int what you say but the way you say it." This familiar comment, immortalized in song, is the time-honored way of briefly indicating what suprasegmental analysis is all about. 
The segments of spoken language are the vowels and the consonants, which combine to produce syllables, words, and sentences. 
But at the same time as we articulate these segments, our pronunciation varies in other respects. We make use of a wide range of tones of voice, which change the meaning of what we way in a variety of different ways. Suprasegmental features operate over longer stretches of speech, such as rhythm and voice quality as opposed to segmental features, which are the individual sounds. 
Students of language and those who plan careers in language teaching, coaching, therapy, acting, and speaking will benefit greatly from understanding how they can influence meaning by things like length, intonation, stress, and tone and other suprasegmental features.

Length - the amount of time it takes to produce a sound

Some sounds are longer than others.
English: beat vs. bead
If you were to pronounce both words with longer vowels, the pronunciation might seem strange but the meaning is not lost. In other words, the meaning of beat and beat are the same.
But in other languages, vowel length actually changes the meaning of words. Therefore, pronunciation of the lengthened sound is very important because the word means something completely different. Study these examples in Hawaiian. Length in Hawaiian is indicated with the diacritical mark that looks like a dash over the vowel, called a kahakō.
Hawaiian: kau "to place"
  kāu "to belong to you"
   
  lolo "brain"
  lōlō "slang - hardheaded
   
  kala "to forgive"
  kāla "money"
  ka lā "the sun"
   
  pau "finished"
  pa'u "soot"
  pa'ū "skirt"
In English, you can express your emotions by lengthening certain sounds in sentences. By varying the tempo of words (such as lengthening specific sounds) you can communicate your feelings.
English: Should I leave now?
  Yes. (snipped, implies irritation)
  Ye-e-e-e-s-s-s-s (implies thoughtfulness)


Intonation - the rising and falling of the voice (pitch) over a stretch of sentence

If pitch varies over an entire phrase or sentence, we call the different pitch curves by the term intonation.  Intonation conveys the speaker's attitude or feelings.  In other words, intonation can convey anger, sarcasm, or various emotions.
How do these sentences - with the exact same words -- mean very different things with different intonation?
John told me to leave. (normal intonation)
John told me to leave. (emphasis on John: John, not Mike)
John told me to leave. (emphasis on told: told, not asked nicely)
John told me to leave. (emphasis on me: me, not you or Mary)
John told me to leave. (emphasis on leave: leave, not stay)
Other languages don't use intonation in this way. "John told me to leave" is "Jose me mando a salir" in Spanish. But it's not possible to say Jose me mando a salir or Jose me mando a salir, as we can in English. Instead of raising your voice to emphasize a word, Spanish uses word order and places the word to be emphasized at the end of the sentence (note: the written accent marks are left out below):
John told me to leave. Jose me mando a salir. (normal intonation)
John told me to leave. Me mando a salir a José. (emphasis on José)
John told me to leave. Jose me mando a salir a mi. (emphasis on me)
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classification of diphthongs

An illustrated note on diphthongs

Coverage of the diphthong and its relatives the triphthong and the tetraphthong is somewhat cursory in phonetics and phonology books I have access to, and ironically (or perhaps expectedly) the entries on the subject in Trask (1996) are the best I've found:
diphthong /'difthan/ n.
A single syllabic nucleus which begins with one vowel quality and changes more or less smoothly to a second quality, as in [ju] and [ai]. Usually one one of the two vocalic elements is more prominent than the others, this other consisting only of a preceding glide (an on-glide, as in [ju]), or a following glide (an off-glide, as in [ai]). The first type is called a crescendo (or rising) diphthong, the second a diminuendo (or falling) diphthong. Diphthongs may be further classified as wide or narrow, as closing or opening, or as backing, fronting or centring. Cf. monophthong, triphthong, tetraphthong.
NOTE the spelling and the pronounciation of this word. It is an error to use the term `diphthong' in the sense of digraph. Greek diphthonggos `double sound'.

Opening and closing diphthongs


Illustration: Opening diphthongs in Thai
opening diphthong n.
A diphthong whose second element is more open than the first, such as [ja]. Ant. closing diphthong.
It is not mentioned whether the diphthongs in the example are rising or falling, but they are all wide.
Illustration: Closing diphthongs in Am. English
closing diphthong n.
A diphthong whose second element is higher (closer) than its first, such as [ei] or [au]. Ant. opening diphthong.
It is not mentioned whether the diphthongs in the example are rising or falling, but they are all wide.

Fronting, centring and backing diphthongs


Illustration: Centring diphthongs in German
centring diphthong n. (also ingliding diphthong)
A diphthong during whose articulation the tongue moves toward the central vowel schwa, such as the diphthongs [ie], [ue] or [ee] in non-rhotic pronounciations of beer, poor and fair.
Illustration: Fronting and backing diphthongs in Cantonese
fronting diphthong n.
A diphthong in which the second element is farther front than the first, such as [oj]or [wi]. Ant. backing diphthong.
backing diphthong n.
A diphthong in which the second element is further back than the first, such as [ju]or [ew]. Ant. fronting diphthong.
An example of fronting and backing diphthongs in Cantonese. The fronting diphthongs are: ei ai ai åi oy ui. The backing diphthongs are: iu eu au au ou. Furthermore, all but ei and ou are wide.

Rising and falling diphthongs

These terms are found in Lass(1984) and Laver(1994) as well, 'crescendo' and 'diminuendo' diphthongs seems to be unique to Trask. A term Trask seems to have overlooked is 'level diphthong' as used in Laver(1994); neither rising nor falling.
rising diphthong n. (also crescendo diphthong)
A diphthong consisting of an on-glide followed by a more prominent second element, such as [ju] or [we]. Ant. falling diphthong.
falling diphthong n. (also diminuendo diphthong)
A diphthong consisting of a more prominent first element followed by a less prominent off-glide, such as [aj], [aw], [ee] or [oj]. Ant. rising diphthong.
There's no agreed on technique for marking the "weak" vowel (the second in a falling diphthong, the first in a rising diphthong), Lass (1984, chapter 11.2) uses a non-syllabicity diacritic [_^], as in [ai_^] and [a_^i], which is as good as any.

Narrow and wide diphthongs

narrow diphthong n.
A diphthong whose intial and final elements differ little in height, such as [ei] or [ow]. Ant. wide diphthong.
wide diphthong n.
A diphthong involving a large movement between its intial and final elements, such as [ai]. Ant. narrow diphthong.

Some triphthongs

Illustration: Triphthongs in RPIllustration: Some triphthongs
Whether triphthongs (and tetraphthongs) actually exist is also somewhat debated: the issue is, as with diphthongs, what status/difference is there between the glides (semi-vowels) /j/ and /w/ and "true" vowels. Is a sequence of three "vowels" a sequence of three vowels or are one or two of them glides?

Classification of vowels

Classification of consonant

 sonora
  • The sound is a vowel if the air, once out of the glottis, is allowed to pass relatively1 freely through the resonators.
  • The sound is a consonant if the air, once out of the glottis, is obstructed, partially or totally, in one or more places.  Voiced consonants contain vocal chord vibration. Unvoiced consonants have no vibration.2
Consonants are classified according to manner of production, place of production, and voicing. The table immediately below (Ling, 1976, p. 259)3 provides a summary. Following that is brief explanation of the salient features.
Classification of Consonants


P  L A  C  E

FRONT MIDDLE BACK
Bilabial Labiodental Linguadental Alveolar Palatar Velar Glottal
M
A
N
N
E
R
Plosives/Stops Unvoiced
Voiced
[p]click to hear the sound
[b]click to hear the sound
    [t]click to hear the sound
[d]click to hear the sound
  [k]click to hear the sound
[g]click to hear the sound
 
Fricatives Unvoiced
Voiced
  [f]click to hear the sound
[v]click to hear the sound
[o fricative]click to hear the sound
[ð]click to hear the sound
[s]click to hear the sound
[z]click to hear the sound
[sh]click to hear the sound
[zh]click to hear the sound
  [h]click to hear the sound
Nasals Voiced [m]click to hear the sound     [n]click to hear the sound   [n]click to hear the sound  
Semivowels
(Approximates)
Voiced [w]click to hear the sound       [j]click to hear the sound    
Liquids Voiced       [l]click to hear the sound
[r]click to hear the sound
     
Affricates Unvoiced
Voiced
        [tsh]click to hear the sound
[dzh]click to hear the sound
   
Classification of Consonants: Salient Features
Manner: How sounds are made
Plosives
  • Vocal tract is blocked
  • There is a build-up of air pressure and then the airstream is abruptly released.
Fricatives
  • Airstream is directed through a narrow constriction in the vocal tract.
  • The air forced through the narrow constriction creates turbulence or friction.
Nasals
  • Closed vocal tract and open velopharyngeal port
  • Air flows through the nasal cavity.
Affricates
  • Combination of a stop and a fricative = quick release of a sound (stop) followed by an air sound (fricative).  Example: /tsh/ is a combination of /t/ and /sh/
Liquids
  • Vowel-like sounds produced with an open vocal tract
Semivowels/Glides
  • A gliding motion from one vowel to a second vowel is made by the articulators.

Voicing: Whether sounds involve vocal cord vibration
  • Voiced consonants = vocal cord vibration
  • Voiceless consonants = no vibration
Place: where sounds are made in the mouth 
  • Bilabial.  Sounds made with the lips. /b/, /p/, /m/, and /w/
  • Labio-dental.  Sounds made with the lips and teeth. /f/ and /v/
  • Lingua-dental.  The tongue tip touches the inside margin of the upper central incisors. /o fricative/ and / ð/
  • (Lingua)alveolar. Sounds made with the tongue touching or almost touching the alveolar ridge which lies behind the upper central incisors. /t/, /d/, /s/, /z/, /n/, and /l/.
  • Palatal.  This area is behind the alveolar ridge. / j /, /r/, /sh/, /zh/, / tsh/, / dzh
  • Velar.  The velum (soft palate) is in front of the uvula. /k/, /g/, and /n/
  • Glottal.  The glottis is the most posterior place of articulation and /h/ is the only English consonant made here.
Notes:
1In vowels, the air passes relatively freely. The tongue, in its varied positions, does create some obstruction, but the air is not really passing freely as it does in breathing, for example. 2Using the presence or absence of vocal chord vibration to differentiate physiologically between voiced and unvoiced consonants is technically accurate, particularly if one only considers the sounds in isolation.  For example, the fricatives, such as  /sh/ and /s/ can be produced in isolation and have no vocal chord vibration.  Their voiced partners, the /zh/ and the /z/, both clearly have vocal chord vibration. However, for the plosives the situation is a little trickier.  Now the acoustic differentiation between voiced and unvoiced sounds in co-articulated syllables becomes the most meaningful.  It is not actually possible to produce a plosive sound without it being followed by a vowel.  Even in whispering a "p," one is actually producing a whispered /pinverted v/ sound. 
3Adapted from: Ling D. (1976) Speech and the Hearing-Impaired Child: Theory and Practice. Washington DC: AG Bell, p. 259.
 
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