Celia: I discovered the Lee Silverman Voice program for PDers developed by Dr. Lorraine Ramig in the Dept of Special Ed at U. Colorado Boulder. I visited a year ago and got her materials, and saw a video of before and after treatment voice production. She teaches a controlled yelling over a 16 hour procedure. I brought it back to the Vanderbilt Voice Center and they started me on it last fall. I went about 4 hrs. before I got a sinus infection and had to stop. But even with that, I noticed a considerable improvement in my voice. I'm going to go through the full cycle this summer. I am at home and it's early in the day. Address for her is at the office. I will post it for you later. I'd urge you to be in touch and see if you can get someone down there to do it. A voice/speech therapist can do it if they will follow the instructions. Bob Newbrough