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The duration between the release of the plosive and the voice onset is called the voice onset time (VOT) or the aspiration interval. Highly aspirated plosives have a long period of aspiration, so that there is a long period of voiceless airflow (a phonetic [h]) before the onset of the vowel.
The concept of voice onset time can be traced back as far as the 19th century, when Adjarian (1899: 119) [1] studied the Armenian stops, and characterized them by "the relation that exists between two moments: the one when the consonant bursts when the air is released out of the mouth, or explosion, and the one when the larynx starts vibrating".
Oral occlusive may mean any of the above apart from nasal occlusives, but typically means stop/plosive. Nasal occlusive may be used to distinguish the simple nasal sounds from other nasal consonants. The terms 'stop' and 'occlusive' are used inconsistently in the literature. They may be synonyms, or they may distinguish nasality as here.
For the pairs of English stops, however, the distinction is better specified as voice onset time rather than simply voice: In initial position, /b d g/ are only partially voiced (voicing begins during the hold of the consonant), and /p t k/ are aspirated (voicing begins only well after its release).
In human speech, egressive sounds are sounds in which the air stream is created by pushing air out through the mouth or nose. The three types of egressive sounds are pulmonic egressive (from the lungs), glottalic egressive (from the glottis), and lingual (velaric) egressive (from the tongue).
Obstruents are subdivided into: plosives (oral stops), such as [p, t, k, b, d, ɡ], with complete occlusion of the vocal tract, often followed by a release burst ...
Plosive, often called stop, is an oral occlusive, where there is occlusion (blocking) of the oral vocal tract, and no nasal air flow, so the air flow stops completely. Examples include English /p t k/ and /b d ɡ/ . If the consonant is voiced, the voicing is the only sound made during occlusion; if it is voiceless, a stop is completely silent.
The glottal stop or glottal plosive is a type of consonantal sound used in many spoken languages, produced by obstructing airflow in the vocal tract or, more precisely, the glottis. The symbol in the International Phonetic Alphabet that represents this sound is ʔ .