Thanks very much. I'll look at these links. Tom Tom Brennan, CCC-A/SLP, RHD web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html web master http://titan.sfasu.edu/~f_freemanfj/speechscience.html web master http://titan.sfasu.edu/~f_freemanfj/fluency.html