Pre-voicing
Prevoicing, in phonetics, is voicing before the onset of a consonant or beginning with the onset of the consonant but ending before its release. In the extensions to the International Phonetic Alphabet for speech pathology, prevoicing is transcribed with a voicing diacritic placed in front of the consonant, as in.
In several Khoisan languages of Southern Africa, such as Taa and !Kung, stops such as and are sometimes analyzed as being prevoiced and, though the cessation of voicing has also been analyzed as phonetic detail in the transition of a phonemically voiced consonant to its voiceless aspiration or ejection.
Kelabit has a similar set of aspirated voiced consonants. Not all speakers produce the aspiration, resulting in prevoiced (or equivalently, and neighboring Lun Dayeh has (=.
