Airstream mechanism
In phonetics, the term airstream mechanism refers to the method of air travel by which a sound is produced.There are four types of airstream mechanisms:
- pulmonic egressive - where a sound is articulated by pushing air out of the lungs and through the vocal tract, rather than from the glottis or the mouth.
- glottalic egressive - where a sound is produced by pushing air out of the glottis, rather than from the lungs.
- glottalic ingressive - where a sound is produced by sucking air into the glottis, rather than pushing it out.
- velaric egressive - where a sound iis produced by movement of mouth air by action of the tongue, rather than air from the glottis or the lungs.