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Coarticulation in phonetics refers to two different phenomena: the assimilation of the place of articulation of one speech sound to that of an adjacent speech sound. For example, while the sound /n/ of English normally has an alveolar place of articulation, in the word tenth it is pronounced with a dental place of articulation because the following sound, /θ/, is dental.
Co-articulated consonants or complex consonants are consonants produced with two simultaneous places of articulation.They may be divided into two classes: doubly articulated consonants with two primary places of articulation of the same manner (both stop, or both nasal, etc.), and consonants with secondary articulation, that is, a second articulation not of the same manner.
For example, when making a p sound, the lips come together tightly, blocking the air momentarily and causing a buildup of air pressure. The lips then release suddenly, causing a burst of sound. The place of articulation of this sound is therefore called bilabial, and the manner is called stop (also known as a plosive).
For example, the w in kʷ is written after the k. This can be misleading, as it iconically suggests that the [k] is released into a [w] sound, analogous to kˡ kⁿ ([k] with a lateral and nasal release), when actually the two articulations of [kʷ] are generally pronounced more-or-less simultaneously.
Just like words in spoken languages, coarticulation may cause signs to influence each other's form. Examples include the handshapes of neighboring signs becoming more similar to each other (assimilation) or weak drop (an instance of deletion). [128]
This coarticulation can lead to articulatory gestures that seem very much like deletions or complete assimilations. For example, hundred pounds may sound like [hʌndɹɪ b paʊndz] and jumped back (in slow speech, [dʒʌmptbæk] ) may sound like [dʒʌmpbæk] , but X-ray [ 85 ] and electropalatographic [ 86 ] [ 87 ] [ 88 ] studies demonstrate ...
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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].