www.utd.edu/~loizou/speech/colea.htm

www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html

http://www.dcs.shef.ac.uk/~martin/MAD/docs/download.htm

http://cvsp.cs.ntua.gr/courses/patrec/OnlineSpeechDemos/speechDemo_2004_Part1.html

http://www.speech-recognition.de/index.html

http://www.eas.asu.edu/~speech/education/educ1.html