From A Weak to Confident Communicator - 30 Day Challenge
When people compliment a good voice, almost certainly the person had a deep voice.
People who have a deep voice come across as confident and attractive. This applies both to men and women.
Well, not everyone is gifted with a natural deep voice but you can make an effort to lower your pitch irrespective of how your vocal chords are. The simplest way to lower the pitch of your voice is to attempt talking from your stomach instead of throat. Try it right now and you will notice a difference.
Today, you must speak in a deeper voice for 5 minutes.