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A
stop,
plosive, or
occlusive is a consonant sound produced by stopping the airflow in the
vocal tract. The terms
plosive and
stop are usually used interchangeably, but they are not perfect synonyms. Plosives are stops with a
pulmonic egressive Initiation (phonetics). The term is also used to describe oral consonant (non-nasal) stops. Many use the term
nasal continuant rather than
nasal stop to refer to sounds like and . One should be aware that this article treats these "nasal continuants" as
nasal stops.
All languages in the world have stops and most have at least , , , , and . Colloquial
Samoan language lacks the dentals and , and the northern Iroquoian languages lack the labials and . Several of the Chimakuan languages, Salishan languages, and Wakashan languages around Puget Sound lack
nasal consonant.
Stop articulation
In the articulation of the stop, three phases can be distinguished:
- Catch: The airway closes so that no air can escape through the mouth (hence the name stop). With nasal stops, the air escapes through the nose.
- Hold or occlusion: The airway stays closed, causing a pressure difference to build up (hence the name occlusive).
- Release or burst: The closure is opened. In the case of plosives, the released airflow produces a sudden impulse causing an audible sound (hence the name plosive).
In many languages, such as Malay language and
Vietnamese language, final stops lack a release burst, or have a nasal release. See
Unreleased stop.
In
affricate consonant, the release is a fricative consonant.
Classification of stops
Nasalization
nasal consonants stops are differentiated from oral stops only by a lowered Soft palate that allows the air to escape through the nose during the occlusion.
Nasal stops are acoustically sonorants, as they have a non-turbulent airflow and are nearly always voiced, but they are articulatorily
obstruents, as there is complete blockage of the oral cavity.
A prenasalized stop starts out with a lowered velum that raises during the occlusion. The closest examples in English are consonant clusters such as the in
candy, but many languages have prenasalized stops that behave as single consonants. Swahili language is well known for having words whose spellings begin with "mp" or "nd", like "mtu", though truer prenasalized sounds like or do occur word-initially in other bantu languages.
A Nasal release begins with a raised velum that lowers during the occlusion. This causes an audible nasal
release, as in English
sudden.
Russian language and other Slavic languages have words that begin with , which can be seen in the name of the
Dnieper River.
Note that the terms
prenasalization and
postnasalization are normally only used in languages where these sounds are phonemic, that is, not analyzed into sequences of plosive plus nasal stop.
Voice
voiced consonant stops are articulated with simultaneous vibration of the vocal cords,
voiceless stops without. Plosives are commonly voiceless, whereas nasal stops are only rarely so.
Aspiration
In
Aspiration (phonetics) stops, the voice onset (the time when the vocal cords begin to vibrate) comes perceivably later than the release of the stop. The duration between the release of the stop and the voice onset is called voice onset time (VOT). Tenuis consonant stops have a voice onset time close to zero, meaning that voicing begins when the stop is released. Voiced stops have a negative voice onset time, meaning the voicing begins before the stop is released. A stop is called "fully voiced" if it is voiced during the entire occlusion. In English, however, initial voiced plosives like or are only partially voiced, meaning that voicing picks up sometime during the occlusion. Aspirated stops have a voice onset time greater than zero, so that there is a period of voiceless airflow (a phonetic glottal fricative) before the onset of the vowel.
In most dialects of English, the final
g in the word
bag is likely to be fully voiced, while the initial
b will be only partially voiced. Initial voiceless plosives, like the
p in
pie, are aspirated, with a palpable puff of air upon release, while a plosive after an
s, as in
spy, is tenuous. Speaking near a candle flame, one will notice that the flame will flicker more when
par, tar, car is articulated compared with
spar, star, scar.
Length
In a
consonant length or
long stop, the occlusion lasts longer than in normal stops. In languages where stops are only distinguished by length (e.g. Arabic, Ilwana, Icelandic), the long stops may last up to three times as long as the
short stops.
Italian language is well known for its geminate stop, as the double
t in the name
Vittoria takes just as long to say as the
ct does in English
Victoria. Japanese language also prominently features the geminate consonant, such as in the minimal pair 来た (kita), meaning
came, and 切った (kitta) meaning
cut (past).
Note that there are many languages where the features voice, aspiration, and length reinforce each other, and in such cases it may be hard to tell which of these features predominates. In such cases the terms
fortis is sometimes used for aspiration or gemination, while
lenis is used for single, tenuous or voiced stops. Beware, however, that the terms
fortis and
lenis are poorly defined, and their meanings vary from source to source.
Airstream mechanism
Stops may be made with more than one
airstream mechanism. The normal mechanism is pulmonic egressive, that is, with air flowing outward from the lungs. All languages have pulmonic stops. Some languages have stops made with other mechanisms as well:
Ejective consonant (glottalic egressive), implosive consonant (
glottalic ingressive), or
click consonants (velaric ingressive).
Tenseness
A
fortis stop (in the narrow sense) is produced with more muscular tension than a
lenis stop (in the narrow sense). However, this is difficult to measure, and there is usually debate over the actual mechanism of alleged fortis or lenis consonants.
There are a series of stops in Korean language, sometimes written with the IPA symbol for ejectives, which are produced using "stiff voice", meaning there is increased contraction of the glottis than for normal production of voiceless stops. The indirect evidence for stiff voice is in the following vowels, which have a higher fundamental frequency than those following other stops. The higher frequency is explained as a result of the glottis being tense. Other such phonation types include
breathy voice, or murmur;
slack voice; and creaky voice.
Examples
Here are the oral stops (plosives) granted dedicated symbols in the International Phonetic Alphabet. See also the nasal consonant.
English stops
, , (aspirated word-initially, tenuis in clusters with
s)
, , (in most dialects: partially voiced word-initially, fully voiced intervocally)
, , (fully voiced nasal stops)
(glottal stop, not as a
phoneme in most dialects)
See also
A
stop,
plosive, or
occlusive is a consonant sound produced by stopping the airflow in the vocal tract. The terms
plosive and
stop are usually used interchangeably, but they are not perfect synonyms. Plosives are stops with a pulmonic egressive
Initiation (phonetics). The term is also used to describe
oral consonant (non-nasal) stops. Many use the term
nasal continuant rather than
nasal stop to refer to sounds like and . One should be aware that this article treats these "nasal continuants" as
nasal stops.
All languages in the world have stops and most have at least , , , , and . Colloquial
Samoan language lacks the dentals and , and the northern Iroquoian languages lack the labials and . Several of the Chimakuan languages,
Salishan languages, and
Wakashan languages around
Puget Sound lack nasal consonant.
Stop articulation
In the articulation of the stop, three phases can be distinguished:
- Catch: The airway closes so that no air can escape through the mouth (hence the name stop). With nasal stops, the air escapes through the nose.
- Hold or occlusion: The airway stays closed, causing a pressure difference to build up (hence the name occlusive).
- Release or burst: The closure is opened. In the case of plosives, the released airflow produces a sudden impulse causing an audible sound (hence the name plosive).
In many languages, such as
Malay language and
Vietnamese language, final stops lack a release burst, or have a
nasal release. See Unreleased stop.
In affricate consonant, the release is a fricative consonant.
Classification of stops
Nasalization
nasal consonants stops are differentiated from oral stops only by a lowered Soft palate that allows the air to escape through the nose during the occlusion.
Nasal stops are acoustically
sonorants, as they have a non-turbulent airflow and are nearly always voiced, but they are articulatorily
obstruents, as there is complete blockage of the oral cavity.
A
prenasalized stop starts out with a lowered velum that raises during the occlusion. The closest examples in English are consonant clusters such as the in
candy, but many languages have prenasalized stops that behave as single consonants.
Swahili language is well known for having words whose spellings begin with "mp" or "nd", like "mtu", though truer prenasalized sounds like or do occur word-initially in other bantu languages.
A Nasal release begins with a raised velum that lowers during the occlusion. This causes an audible nasal
release, as in English
sudden.
Russian language and other Slavic languages have words that begin with , which can be seen in the name of the
Dnieper River.
Note that the terms
prenasalization and
postnasalization are normally only used in languages where these sounds are phonemic, that is, not analyzed into sequences of plosive plus nasal stop.
Voice
voiced consonant stops are articulated with simultaneous vibration of the vocal cords,
voiceless stops without. Plosives are commonly voiceless, whereas nasal stops are only rarely so.
Aspiration
In
Aspiration (phonetics) stops, the voice onset (the time when the vocal cords begin to vibrate) comes perceivably later than the release of the stop. The duration between the release of the stop and the voice onset is called
voice onset time (VOT). Tenuis consonant stops have a voice onset time close to zero, meaning that voicing begins when the stop is released. Voiced stops have a negative voice onset time, meaning the voicing begins before the stop is released. A stop is called "fully voiced" if it is voiced during the entire occlusion. In English, however, initial voiced plosives like or are only partially voiced, meaning that voicing picks up sometime during the occlusion. Aspirated stops have a voice onset time greater than zero, so that there is a period of voiceless airflow (a phonetic glottal fricative) before the onset of the vowel.
In most dialects of English, the final
g in the word
bag is likely to be fully voiced, while the initial
b will be only partially voiced. Initial voiceless plosives, like the
p in
pie, are aspirated, with a palpable puff of air upon release, while a plosive after an
s, as in
spy, is tenuous. Speaking near a candle flame, one will notice that the flame will flicker more when
par, tar, car is articulated compared with
spar, star, scar.
Length
In a
consonant length or
long stop, the occlusion lasts longer than in normal stops. In languages where stops are only distinguished by length (e.g. Arabic, Ilwana, Icelandic), the long stops may last up to three times as long as the
short stops. Italian language is well known for its geminate stop, as the double
t in the name
Vittoria takes just as long to say as the
ct does in English
Victoria.
Japanese language also prominently features the geminate consonant, such as in the minimal pair 来た (kita), meaning
came, and 切った (kitta) meaning
cut (past).
Note that there are many languages where the features voice, aspiration, and length reinforce each other, and in such cases it may be hard to tell which of these features predominates. In such cases the terms fortis is sometimes used for aspiration or gemination, while lenis is used for single, tenuous or voiced stops. Beware, however, that the terms
fortis and
lenis are poorly defined, and their meanings vary from source to source.
Airstream mechanism
Stops may be made with more than one
airstream mechanism. The normal mechanism is pulmonic egressive, that is, with air flowing outward from the lungs. All languages have pulmonic stops. Some languages have stops made with other mechanisms as well: Ejective consonant (glottalic egressive),
implosive consonant (glottalic ingressive), or
click consonants (velaric ingressive).
Tenseness
A
fortis stop (in the narrow sense) is produced with more muscular tension than a
lenis stop (in the narrow sense). However, this is difficult to measure, and there is usually debate over the actual mechanism of alleged fortis or lenis consonants.
There are a series of stops in Korean language, sometimes written with the IPA symbol for ejectives, which are produced using "
stiff voice", meaning there is increased contraction of the glottis than for normal production of voiceless stops. The indirect evidence for stiff voice is in the following vowels, which have a higher fundamental frequency than those following other stops. The higher frequency is explained as a result of the glottis being tense. Other such
phonation types include
breathy voice, or murmur; slack voice; and
creaky voice.
Examples
Here are the oral stops (plosives) granted dedicated symbols in the
International Phonetic Alphabet. See also the
nasal consonant.
- voiceless bilabial plosive
- voiced bilabial plosive
- voiceless alveolar plosive
- voiced alveolar plosive
- voiceless retroflex plosive
- voiced retroflex plosive
- voiceless palatal plosive
- voiced palatal plosive
- voiceless velar plosive
- voiced velar plosive
- voiceless uvular plosive
- voiced uvular plosive
- epiglottal plosive
- glottal stop
English stops
, , (aspirated word-initially, tenuis in clusters with
s)
, , (in most dialects: partially voiced word-initially, fully voiced intervocally)
, , (fully voiced nasal stops)
(glottal stop, not as a
phoneme in most dialects)
See also
Stop consonant - Wikipedia, the free encyclopedia
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Hutchinson encyclopedia article about plosive. plosive. Information about plosive in the Hutchinson encyclopedia.
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Hutchinson encyclopedia article about plosive speech sound. plosive speech sound. Information about plosive speech sound in the Hutchinson encyclopedia.
Untitled Document
pulmonic egressive obstruent stop
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Xplosive beats 24/7 ... Welcome to our new site, take a look at the new features such as, chatrooms, request system where you can get a tune played using our automatic system ...
plosive consonant - definition of plosive consonant by the Free Online ...
Definition of plosive consonant in the Online Dictionary. Meaning of plosive consonant. Pronunciation of plosive consonant. Translations of plosive consonant. plosive consonant ...
plosive - Wiktionary
Definition from Wiktionary, a free dictionary