Gail, this may help, or not, but I will suggest it. It seems that PWP's who have a weak speaking voice, can often SING pretty well, and if upset, my dad, for example can really yell, though his speaking voice is weak. If you can get a voice activated program that will respond to singing and shouting as well as normal speaking, might solve your father's problem. I have a reputation as a jokester here, but I am serious now, and hope it will help. Ken B