Tall registers singing voice. As a result, the study identified three major significantly different on the mechanisms of education, high-rise registers excitation frequency of the pitch in the human larynx.
The first register of the singing voice, both for men and for women - this is the register in which the fundamental frequency is formed exclusively form and characteristic parameter (width) voice barriers in human larynx.
Second register to vote - is the register in which the formation of fundamental frequency, in addition to the shape and characteristic parameters of the voice obstacles involved the mechanism of longitudinal stretching and reducing the thickness of the ligaments. The essence of this mechanism is as follows. When contracted state arytenoid and cricothyroid-arytenoid muscle contraction added cricothyroid-thyroid muscles. This will cause a downward slope and forward movement of the thyroid cartilage. This will cause additional tension of the vocal cords. Consequently, earthy-thyroid muscle function performed tension of the vocal cords, which plays a special role in improving their elasticity, and therefore, to further increase the frequency of the fundamental.
There is a third way to increase the frequency of the pitch singing voice. This - lengthening and narrowing of the laryngeal pharynx. In this case, significant changes are observed at the level of the larynx: the larynx is greatly reduced, there is a slope (down and forward) of the thyroid cartilage, a more or less noticeable lengthening of the vocal cords and voice flat barrier bends down and forward on the 15-200 or more.