There are a bunch of exercises used as theater games warm-ups that help your voice find it’s natural register— your ‘relaxed’ voice
Think of it as that ‘morning after’ voice— you wake up after some amazing first night whoopie with a new bed mate and say "good morning"— remember how deep and relaxed the timbre of your voice was?
http://articles .techrepublic.c … 11-1029845.html
That popped up near the top of a search for ‘voice warm up exercises’— I would suggest that you look for other material that is directed at public speaking or actors
Many of then will be directed at diction— always useful— but there are simple techniques to drop your register and loosen your throat, such as dropping sighs, starting high and dropping as you exhale, sometimes coupled with physical dropping over from the waist.
The trick is that like PE or gym work, you must do them regularly to truly find and maintain that relaxed voice
WE are the 99% 'WE are the people you depend on; we cook your meals, we haul your trash, we connect your calls. We drive your ambulances. We guard you while you sleep. Don't f&ck with us'-- Madame DeFarge
"Rope trades @$10 a yard. I wonder if they even know that?"- Capitalist