voiceless alveolar fricative

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alveolar fricative voiceless oral pulmonic consonant

place the tip or blade of tongue on alveolar ridge
bring two articulators together so that the airstream is partially obstructed and turbulent airflow is produced
do not vibrate the vocal cord
direct the airstream along the center of the tongue, rather than to the sides
air is allowed to escape through the mouth only
push air solely with the lungs and diaphragm