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Dear Bob & Joy Graham, I am unfamiliar with the "speech enhancer" but I have been using what sounds like a very similar device for over 2 years now since I descovered= this phenomenon at my local science exhibit hall. You can find numerous posts by myself on this list if you do a search of the archives requestin= g "speech and riess". In a nutshell the device I have built is called a D= AF (delayed audio feedback) and it allows one to hear one's own speech about= 600 milliseconds delayed. This forces one to attend to the task of speaking rather than speech. An analogy would be focusing on one's finge= rs while playing the piano rather than focusing on the music which is being created. The device can quite magically convert garbled (disartric) spee= ch into normal speech. By the way a similar rationale can be applied to overcomming writing problems. Regards, Tom