The alveolar lateral approximant, also known as clear l, is a type of consonantal sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents dental, alveolar, and postalveolar lateral approximants is ⟨l⟩, and the equivalent X-SAMPA symbol is l.
As a sonorant, lateral approximants are nearly always voiced. Voiceless lateral approximants, /l̥/, are common in Tibeto-Burman languages, but uncommon elsewhere. In such cases, voicing typically starts about halfway through the hold of the consonant. No language contrasts such a sound with a voiceless alveolar lateral fricative [ɬ].
In a number of languages, including most varieties of English, the phoneme /l/ becomes velarized in certain contexts, a sound often called "dark l". Some languages, like many North American dialects of English may not have a "clear" /l/ at all.
Features
Features of the alveolar lateral approximant:
- Its manner of articulation is approximant, which means it is produced by narrowing the vocal tract at the place of articulation, but not enough to produce a turbulent airstream.
- Its place of articulation is alveolar, which means it is articulated with either the tip or the blade of the tongue at the alveolar ridge, termed respectively apical and laminal.
- Its phonation is voiced, which means the vocal cords vibrate during the articulation.
- It is an oral consonant, which means air is allowed to escape through the mouth only.
- It is a lateral consonant, which means it is produced by directing the airstream over the sides of the tongue, rather than down the middle.
- The airstream mechanism is pulmonic, which means it is articulated by pushing air solely with the lungs and diaphragm, as in most sounds.
Occurrence
Languages may have clear apical or laminal alveolars (such as Bulgarian, which has both), laminal denti-alveolars (such as French), or true dentals, which are uncommon. However, a true dental generally occurs allophonically before /θ/ in languages which have it, as in English health.
- Alveolar
- Dental or denti-alveolar
- Variable
See also
References
Bibliography
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