A speech pathologist can teach you how to force air into the top of your esophagus and then push it out again. The puff of air is like a burp. It vibrates the walls of the throat, making sound for the new voice. The tongue, lips, and teeth form words as the sound passes through the mouth.

This type of speech sounds low pitched and gruff, but it usually sounds more like a natural voice than speech made by a mechanical larynx. There is also no device to carry around, so your hands are free.