Voiced dental and alveolar lateral approximants

Voiced dental and alveolar lateral approximants are a type of consonantal sound used in many spoken languages. It is familiar to English-speakers as the "l" sound in "lift". The symbol in the International Phonetic Alphabet that represents them is ⟨l⟩.

As a sonorant, lateral approximants are nearly always voiced. Voiceless lateral approximants, /l̥/ are common in Sino-Tibetan languages, but uncommon elsewhere. In such cases, voicing typically starts about halfway through the hold of the consonant. No language is known to contrast 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 ("dark l") in certain contexts. By contrast, the non-velarized form is the "clear l" (also called "light l"), which occurs before and between vowels in certain English standards. Some languages have only clear l. Others may not have a clear l at all, or have it only before front vowels (especially [i]).

Features

Features of voiced alveolar lateral approximants:

• 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.
• There are four specific place of articulation variants of [l]: Dental, which means it is articulated with either the tip or the blade of the tongue at the upper teeth, termed respectively apical and laminal. Denti-alveolar, which means it is articulated with the blade of the tongue at the alveolar ridge, and the tip of the tongue behind upper teeth. 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. Postalveolar, which means it is articulated with either the tip or the blade of the tongue behind 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 that air is not allowed to escape through the nose.
• 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.
• Its airstream mechanism is pulmonic, which means it is articulated by pushing air only with the intercostal muscles and abdominal muscles, as in most sounds.

Occurrence

Languages may have clear apical or laminal alveolars, laminal denti-alveolars (such as French), or true dentals, which are uncommon. Laminal denti-alveolars tend to occur in continental European languages. However, a true dental generally occurs allophonically before /θ/ in languages that have it, as in English health.

Coronal laterals are often colored by surrounding vowels in their articulation, as the main portion of the tongue body remains free. If necessary, this coloring can be transcribed with superscript vowels, such as ⟨lⁱlᵘlᵊ⟩.

Dental or denti-alveolar

Alveolar

Postalveolar

Variable

Velarized or pharyngealized alveolar lateral approximant

A voiced velarized or pharyngealized alveolar lateral approximant (also known as dark l) is a type of consonantal sound used in some languages. It is an alveolar, denti-alveolar, or dental lateral approximant, with a secondary articulation of velarization or pharyngealization. The regular symbols in the International Phonetic Alphabet that represent this sound are ⟨lˠ⟩ (for a velarized lateral) and ⟨lˤ⟩ (for a pharyngealized lateral), though the dedicated letter ⟨ɫ⟩, which covers both velarization and pharyngealization, is perhaps more common. The latter should not be confused with belted ⟨ɬ⟩, which represents the voiceless alveolar lateral fricative. However, some scholars use that symbol to represent the velarized alveolar lateral approximant anyway – though such usage is considered non-standard.

If the sound is dental or denti-alveolar, one could use a dental diacritic to indicate so: ⟨l̪ˠ⟩, ⟨l̪ˤ⟩, ⟨ɫ̪⟩.

Velarization and pharyngealization are generally associated with more dental articulations of coronal consonants, so dark l tends to be dental or denti-alveolar. Clear (non-velarized) l tends to be retracted to an alveolar position.

The term dark l is often synonymous with hard l, especially in Slavic languages. (cf. hard consonants)

Features

Features of a dark l:

• 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.
• There are four specific place of articulation variants of [ɫ]: Dental, which means it is articulated with either the tip or the blade of the tongue at the upper teeth. Denti-alveolar, which means it is articulated with the blade of the tongue at the alveolar ridge, and the tip of the tongue behind upper teeth. Alveolar, which means it is articulated with either the tip or, more rarely, the blade of the tongue at the alveolar ridge, termed respectively apical and laminal. Postalveolar, which means it is articulated with either the tip or the blade of the tongue behind the alveolar ridge, termed respectively apical and laminal.
• It has a secondary articulation of velarization or pharyngealization, meaning that the back or root of the tongue approaches the soft palate (velum), or the back of the throat, respectively.
• Its phonation is voiced, which means the vocal cords vibrate during the articulation.
• It is an oral consonant, which means that air is not allowed to escape through the nose.
• 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.
• Its airstream mechanism is pulmonic, which means it is articulated by pushing air only with the intercostal muscles and abdominal muscles, as in most sounds.

Occurrence

Dental or denti-alveolar

Alveolar

Variable

See also

• Index of phonetics articles
• Lateral consonant
• Velarization
• L-vocalization
• Ł

Notes

External links

• on PHOIBLE
• on PHOIBLE