What is Voice Feminization Surgery?

Voice Feminization Surgery (VFS) is changing one’s voice to a higher voice tone. It is for the patients who have experienced abnormal hormone functions that were affected by adrogenital syndrome or androphonia, or through the side effect of the hormone treatment for aplastic anemia. However, VFS is mainly performed to the GID (Gender Identity Disorder) patients, which is for male to female transgender.

Male to Female Voice Phonoplasty is a procedure that changes the voice of a male into a female voice in order to help establish the sexual identity.

Females usually differ greatly from males in the fundamental frequency and resonance. The fundamental frequency of male voices typically ranges from 100-150 Hz while ranging from 170-220 Hz in females. Men produce low voices because they have bigger chambers of the throat and mouth. Thus, by altering the larynx, pharynx, and the chambers which produce the sound, a male sounding voice can be changed to a female-sounding voice.