<unk>  feminization is the desired goal of changing a perceived male sounding<unk>  to a perceived female sounding<unk> . The term<unk>  feminization is used to describe what the desired outcome of surgical techniques, speech therapy, self-help programs and a general litany of other techniques to acquire a female-sounding<unk> .  The methods used for<unk>  feminization vary from professional techniques used for vocal training, speech therapy by trained speech pathologists and several Pitch altering surgeries.
Vocal sound is produced by air traveling upwards from the lungs through the opening of the larynx called the glottis where the vocal folds vibrate and phonation or<unk> ng occurs.  The vibrating vocal folds produce a sound that is modified by chambers (like rooms) of the throat and mouth creating resonance frequencies. The size of the chambers directly affects these frequencies. As the size of the chambers increase the deeper (or lower) the formant frequencies become.  These chambers play a very important role in the perception of the timbre (rich, nasal, flat) of the<unk> . The articulators (tongue, lips, jaw, and soft palate etc.) shape the sound into recognizable speech. Then it is the prosodic features (speaking rate, inflection, pauses) which makes unique speech patterns.
There are several frequencies or harmonics produced at the lips. The fundamental frequency (F0) or the number of times per second that the vocal folds vibrate (in hertz), the conversational fundamental frequency is approximately 200 Hz for adult women and 125 Hz for adult men. Many of the<unk>  feminization techniques, including those of surgeons, focus on the fundamental frequency but do little to address the how the sound is modified by the articulators or prosodic features.  Speech therapists and professional<unk>  coaches offer training in both changing the fundamental frequency and how to change the perception of<unk>  quality.<unk>  masculinization is the opposite of<unk>  feminization, being the change of a<unk>  from feminine to masculine.<unk>  masculinization is not generally required for transsexual men as the masculinising effects of testosterone on the larynx are usually sufficient to produce a masculine<unk> .
Voice therapy 
Endodontic therapy
Particle therapy
Uvulopalatopharyngoplasty
Light therapy
Palatal expander
Asthma spacer
NeuroElectric Therapy