how sound is produced by human beings
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the vocal cord or larynx are two main important source of sound in human beings. two ligaments, normally called vocal cords, stretched across the larynx in such a way that there exist a narrow slit between them for the passage of air.
the forced air from the lungs through the Slate makes the vocal cords to vibrate and produce sound. Muscles attached to the vocal cords may increase or decrease their full onley garments. This makes the vocal cords to be tight or loose, thick or thin.
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