Slack voice (or lax voice) is the pronunciation of

consonant In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract, except for the h sound, which is pronounced without any stricture in the vocal tract. Examples are and pronou ...

vowel A vowel is a speech sound pronounced without any stricture in the vocal tract, forming the nucleus of a syllable. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness a ...

s with a glottal opening slightly wider than that occurring in

modal voice Modal voice is the vocal register used most frequently in speech and singing in most languages. It is also the term used in linguistics for the most common phonation of vowels. The term "modal" refers to the resonant mode of vocal folds; that ...

. Such sounds are often referred to informally as lenis or half-

voice The human voice consists of sound made by a human being using the vocal tract, including talking, singing, laughing, crying, screaming, shouting, humming or yelling. The human voice frequency is specifically a part of human sound produ ...

d in the case of consonants. In some Chinese varieties, such as Wu, and in a few

Austronesian language The Austronesian languages ( ) are a language family widely spoken throughout Maritime Southeast Asia, parts of Mainland Southeast Asia, Madagascar, the islands of the Pacific Ocean and Taiwan (by Taiwanese indigenous peoples). They are spoken b ...

s, the 'intermediate'

phonation The term phonation has slightly different meanings depending on the subfield of phonetics. Among some phoneticians, ''phonation'' is the process by which the vocal folds produce certain sounds through quasi-periodic vibration. This is the defi ...

of slack stops confuses listeners of languages without these distinctions, so that different transcription systems may use or for the same consonant. In Xhosa, slack-voiced consonants have usually been transcribed as

breathy voice Breathy voice (also called murmured voice, whispery voice, soughing and susurration) is a phonation in which the vocal folds vibrate, as they do in normal (modal) voicing, but are adjusted to let more air escape which produces a sighing-like s ...

. Although the IPA has no dedicated diacritic for slack voice, the

voiceless In linguistics, voicelessness is the property of sounds being pronounced without the larynx vibrating. Phonologically, it is a type of phonation, which contrasts with other states of the larynx, but some object that the word phonation implies v ...

diacritic (the under-ring) may be used with a voiced consonant letter, though this convention is also used for partially voiced consonants in languages such as English.

Wu Chinese , region = Shanghai, Zhejiang, southern Jiangsu, parts of Anhui and Jiangxi provinces; overseas and migrant communities , ethnicity = Wu , speakers = million , date = 2021 , ref = e27 , fa ...

"muddy" consonants are slack voice word-initially, the primary effect of which is a slightly breathy quality of the following vowel. Javanese contrasts slack and stiff voiced bilabial, dental, retroflex, and velar stops. Parauk contrasts slack voicing in its vowels. The contrast is between "slightly stiff" and "slightly breathy" vowels; the first are between modal and stiff voice, while the latter are captured by slack voice.

References

{{phonation Phonation