Voice
"The human voice consists of sound made by a human being using the
vocal folds for talking, singing, laughing, crying, screaming, etc.
Human voice is specifically that part of human sound production in which
the vocal folds (vocal cords) are the primary sound source. Generally
speaking, the mechanism for generating the human voice can be subdivided
into three parts; the lungs, the vocal folds within the larynx, and the
articulators. The lung (the pump) must produce adequate airflow and air
pressure to vibrate vocal folds (this air pressure is the fuel of the
voice). The vocal folds (vocal cords) are a vibrating valve that chops
up the airflow from the lungs into audible pulses that form the
laryngeal sound source. The muscles of the larynx adjust the length and
tension of the vocal folds to ‘fine tune’ pitch and tone. The
articulators (the parts of the vocal tract above the larynx consisting
of tongue, palate, cheek, lips, etc.) articulate and filter the sound
emanating from the larynx and to some degree can interact with the
laryngeal airflow to strengthen it or weaken it as a sound source."
"The vocal folds, in combination with the articulators, are capable of
producing highly intricate arrays of sound. The tone of voice may be
modulated to suggest emotions such as anger, surprise, or happiness.
Singers use the human voice as an instrument for creating music."
Voice - From Wikipedia
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