<P> The human voice consists of sound made by a human being using the vocal folds for talking , singing , laughing , crying , screaming , etc . The human voice frequency is specifically a part of human sound production in which the vocal folds ( vocal cords ) are the primary sound source . ( Other sound production mechanisms produced from the same general area of the body involve the production of unvoiced consonants , clicks , whistling and whispering . ) 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 . </P>
where is sound produced in the human body
the lungs the vocal folds within the larynx the articulators