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In Southeast Asia, when stops occur at the end of a word, they are voiceless because the glottis is closed, not open, so they are said to be unphonated (have no phonation) by some phoneticians, who considered "breathed" voicelessness to be a phonation. [2] Yidiny consonants have no underlyingly voiceless consonants. [3]
The following table shows the 24 consonant phonemes found in most dialects of English, plus /x/, whose distribution is more limited. Fortis consonants are always voiceless, aspirated in syllable onset (except in clusters beginning with /s/ or /ʃ/), and sometimes also glottalized to an extent in syllable coda (most likely to occur with /t/, see T-glottalization), while lenis consonants are ...
For example, the English suffix -s is pronounced [s] when it follows a voiceless phoneme (cats), and [z] when it follows a voiced phoneme (dogs). [1] This type of assimilation is called progressive, where the second consonant assimilates to the first; regressive assimilation goes in the opposite direction, as can be seen in have to [hæftə].
All English consonants can be classified by a combination of these features, such as "voiceless alveolar stop" [t]. In this case, the airstream mechanism is omitted. Some pairs of consonants like p::b, t::d are sometimes called fortis and lenis, but this is a phonological rather than phonetic distinction.
Still, the classification is used as a stand-in for phonological processes, such as vowel lengthening that occurs before voiced consonants but not before unvoiced consonants or vowel quality changes (the sound of the vowel) in some dialects of English that occur before unvoiced but not voiced consonants. Such processes allow English speakers to ...
voiceless retroflex sibilant [ʂ] voiced retroflex sibilant [ʐ ] Central non-sibilant fricatives. voiceless bilabial fricative [ɸ] voiced bilabial fricative [β] voiceless labiodental fricative [f] voiced labiodental fricative [v] voiceless bidental fricative [h̪͆] voiceless dental fricative [θ] voiced dental fricative [ð]
Voiceless nasal glottal approximant [h̃] Voiceless bilabially post-trilled dental stop [t̪ʙ̥] Voiceless bidental fricative [h̪͆] Voiceless upper-pharyngeal plosive [ʡ̟] Voiced upper-pharyngeal plosive [ʡ̟̬] Bilabial percussive [ʬ] Bidental percussive [ʭ] Sublaminal lower-alveolar percussive [¡]
Complete devoicing of sonorants: In English, a sonorant is completely devoiced after an aspirated plosive (/p, t, k/). Partial devoicing of obstruents: In English, a voiced obstruent is partially devoiced next to a pause or next to a voiceless sound within a word or across a word boundary. Retraction: In English, /t, d, n, l/ are retracted ...