In human speech, egressive sounds are those 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 (exhaled), glottalic egressive, lingual egressive.

Pulmonic egressive

Pulmonic egressive sounds are those in which the air stream is created by the lungs, ribs, and diaphragm. The majority of sounds in most languages, such as vowels, are both pulmonic and egressive. Only the Khoisan languages have large numbers of other sounds.

Glottalic egressive

Glottalic egressive sounds are known as ejectives.

Lingual egressive

The lingual egressive airstream mechanism, also known as velaric egressive, involves a double closure similar to that of the lingual ingressive sounds known as clicks, but with airflow in the opposite direction. With the velum closed, the speaker forces air out of the mouth using either the tongue or cheeks, as in the French expression of dismissal. While not known to be used for normal vocabulary in any human language^[1], apart from the extinct Australian ritual language Damin, a variation of this airstream mechanism is known to musicians as part of circular breathing.

References

See also

• Articulatory phonetics
• Ingressive

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