![[Tract.svg]] [Wikimedia](https://commons.wikimedia.org/wiki/File:Tract.svg) In phonetics, a consonant sound is a speech sound that is produced by obstructing or restricting the flow of air in the vocal tract. This obstruction or restriction can occur at different points in the vocal tract, such as the lips ([[labial]]), teeth ([[dental]]), alveolar ridge ([[alveolar]]), hard palate ([[palatal]]), soft palate ([[velar]]), uvula ([[uvular]]), glottis ([[glottal]]). Consonants can also be classified according to their [[voicing]], [[place of articulation]], and [[manner of articulation]]. Examples of consonant sounds include /p/, /t/, /k/, /s/, /z/, /m/, /n/, and /l/.