Teach those people that if they had air in the esophagus and vocalize with abdominal pressure. They can produce the basic sound for sure, and tell them not to rush. Do not forget the trainees are more impatient than instructors. This type is often seen among elder people who are lacking in the aspiration to vocalize. It is not a serious problem, if you take enough time and energy, and the problem is sure to be solved. One thing you should note is that there are people who take things easy and believe that once they join the voice training class they can produce the basic sound and regain speech. It is advisable that the instructors try to let them produce a basic sound in the first day of the class thus to enlighten them. Once they produce the basic sound, they will feel that their dream will come true, which would work quite well for the voice training thereafter.
