Then increase the pressure within the abdomen at once, and bring out the air in the esophagus which will set into vibration the walls of the esophageal mouth (pseudo-glottis) and create a sound. The inhalation and the phonation are done in the same cycle as the inspiration and expiration through the trachea and approach the normal speech mechanism.
For your information
｡?ne action of inhalation can send by far the more quantity of air into the esophagus than one action of swallowing (or injection) , so that if you acquire the inhalation method, you will have the advantage of making greater progress in esophageal speech hereafter.
