Human voice

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 is specifically a 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.

Aya Ueto

Aya Ueto (上戸 彩, Ueto Aya, born September 14, 1985) is a Japanese actress, singer, model, tarento, and occasional radio personality. Born in Nerima, Tokyo, Ueto was discovered when she participated in the 7th Japan Bishōjo Contest, where she won the special jury prize. At the age of thirteen, Ueto made her acting debut, in the film Satsujinsha: Killer of Paraiso (1999), and she and fellow Japan Bishōjo Contest participants, Mami Nejiki, Mai Fujiya, and Manami Nishiwaki, formed the unsuccessful idol group Z-1. In 2002, after their disbandment, Ueto continued her music career as a solo artist, under the record label Pony Canyon, where she debuted with the single "Pureness."

Ueto's breakthrough came when she was cast as a high school student suffering from gender dysphoria, in the sixth season of the long-running TBS drama 3-nen B-gumi Kinpachi-sensei. Her critically acclaimed performance led to several leading roles and endorsements, eventually establishing herself as one of Japan's most recognizable faces. As one of Japan's most ubiquitous celebrities, Ueto constantly appears on billboards, shop windows and train adverts, and has held the annual title of CM Queen five times since 2004.