Valleculae are anatomical structures located in the throat, specifically in the region of the pharynx. They are small depressions or pockets situated at the base of the tongue, just anterior (in front) to the epiglottis. The volume of the valleculae is largely dependent on the position of the tongue and therefore changes with vowel changes. Research suggests that the valleculae have similar acoustic properties to the piriform sinuses and may influence frequencies below 4kHz. Large valleculae may impede the singers formant while small valleculae may provide and acoustical boost. Outside of singing the valleculae play a role in swallowing. They serve as a temporary holding area for small amounts of saliva or food.
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