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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 voicing and that voicelessness is the lack of phonation.
There is a hypothesis that the contrast between fortis and lenis consonants is related to the contrast between voiceless and voiced consonants. That relation is based on sound perception as well as on sound production, where consonant voice, tenseness and length are only different manifestations of a common sound feature.
Definition Modal voice: Regular vibrations of the vocal cords Voiceless: Lack of vibration of the vocal cords; arytenoid cartilages usually apart Aspirated: Having greater airflow than in modal voice before or after a stricture; arytenoid cartilages may be further apart than in voiceless Breathy voice
Most commonly, the change is a result of sound assimilation with an adjacent sound of opposite voicing, but it can also occur word-finally or in contact with a specific vowel. 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]
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 ...
A silent speech interface is a device that allows speech communication without using the sound made when people vocalize their speech sounds. It works by the computer identifying the phonemes that an individual pronounces from nonauditory sources of information about their speech movements .
VOT is a primary cue signaling the difference between voiced and voiceless plosives, such as "b" and "p". Other cues differentiate sounds that are produced at different places of articulation or manners of articulation. The speech system must also combine these cues to determine the category of a specific speech sound.
Voiceless sonorants are rare; they occur as phonemes in only about 5% of the world's languages. [3] They tend to be extremely quiet and difficult to recognise, even for those people whose language has them. In every case of a voiceless sonorant occurring, there is a contrasting voiced sonorant.