What is the difference between active articulators and passive articulators?
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The active articulator does all or most of the movement when a speech sound is made. It is usually the lower lip or a part of the tongue, because the tongue and lower jaw are free moving.
The passive articulator does little or no movement. It is the part of the place of articulation where the active articulator presses against: usually the upper jaw, upper teeth, roof of the mouth, or back of the throat (pharynx).
(B) In a bilabial articulation, the active articulator is the lower lip and the passive is the upper.
(T) In a denti-alveolar articulation, the top of the tongue (flat) is the active and the back of the upper teeth and the alveolar ridge is the passive.
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