Masculine Voice

References

http://www.nyspeechandvoicelab.net/transgender/voice-masculinization/
- There are many ways to sound more masculine with or without testoterone, so you don’t have to settle if you feel your voice is insufficient. … Visit an otolaryngologist or speech-language pathologist …
  Resonance: This aspect of voice is a more difficult yet critical part of sounding more masculine. It is often the difference between sounding naturally masculine and sounding like a young boy. Resonance is about maximizing the space in your head and neck so that your voice sounds bigger, more like a cello, say, even though your size may be more like a violin. To sound bigger, start by speaking slightly louder, opening/moving your mouth more than usual and opening your throat for a slightly opera-like, yawn-like fullness.