This exercise will be particularly valuable for women for a more feminine voice.
Let's try to develop pitch variations in every day conversational phrases:
The voice sounds gloomy and dark then. At the beginning of training you produce voice at the mouth of the esophagus, but as you make progress, you may as well produce voice by vibrating the folds of the mucous membrane of the upper part. Practice speaking as if to produce sounds at the uppermost part of your throat, and you can make your voice sonorous and penetrating.