This 30 yo had been living as a female for many years. She had a trach shave 8 years ago without complications. She passes for female on the phone about 70% of the time, but when fatigued or if she speaks loudly her voice becomes more masculine.
This 48 yo has been living as a female for 2.5 years and has tried on her own to alter her voice. She has a 30 pack year history of cigarette smoking which has a significant impact on the voice.
This 36 yo has been living full time for a year, off and on for 7 years. In person, perception of feminity is mixed and on the phone she is always called sir. She has done a lot of vocal training.