INTRODUCTION One of the dysphonias occupying the borderland between anatomicopathological and functional is the persistent high pitched breaking voice of a boy in adolescence and adulthood. This peculiar quality of voice which is not due to any pathology of the larynx is called puberphonia or falsetto voice. It is the result of mutation of newly acquired low pitch due to extensive changes in the size, width and mass of the cords in particular and larynx in general. The length of the vocal cords increases by 1/3 or more during few months of puberty, changing the resonating characteristic of the vocal tube. The pitch of this resonating characteristic is determined by many factors but some of them are diameter of the vocal chambers, the textures of their linings, the cross sections of their apertures, and probably chief of all, the total length of the vocal tube" (West).