[The use of real time visual feedback in the treatment of patients with increased fundamental frequency of voice].

To correct fundamental frequency (FF) in five juveniles with puberphonia and in five women with functional dysphonia, we used visual computer feedback (musical soft Circ FFT, Svante Granqvist). Visual computer control over FF alterations facilitated the above correction. This method is an additional tool to the armory of therapeutic measures to correct FF. It is especially useful for persons with tin ear.