The pitch at which you naturally hum is the same pitch at which you should speak. Both should match in pitch. A tape recorder will make it easier to compare the two. 4. In private, alternate humming and speaking until you get the hang of it. This will keep you speaking at your optimal pitch throughout the day.
Muscles tighten and voices can become shrill.
For a better voice, breathe deeply and exhale stress. While speaking visualize that your voice is emanating from your chest or your belly instead of your head. Now reverse the process and see if you can notice the difference. A head voice sounds thinner, a chest voice deeper and more resonant. To test that your voice is properly placed, put your hand on your breast bone.