Imagine that a restaurant manager who has always had trouble with the spelling of English words places an advertisement for a different SEAGH. You see the advertisement and your misperception leads you to ask how he came to form this unacquainted word. Itís very simple, he says. Take the first sound of the term sure, the mid sound of the name DEAD, and the final comprehensive of the word LAUGH. You will, of course, distinguish that this form transports the pronunciation usually associated with the word chef. We investigated the physical production of speech sounds in terms of the articulatory mechanisms of the human vocal tract.