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PHOTOGRAPHING JAW MOVEMENTS DEFINITE TEST OF DRUNKENNESS London, December' 23. Drunkards will be convicted out of their own mouths, if the Courts accept the discovery of Mr. J. \V. Jeaffreson, professor at University ..College, London, that speech can be written accurately by movements of the jaw. The professor says that he has invented an instrument for giving an. identical graph for sound and jaw movement, which are recorded on photographic film from which the actual spoken words can be read. If’ the test were applied to a drunken man it would definitely establish whether his speech were affected, say Mr. Jeaffreson. ; Dips in the graph representing vow-' els would be irregular and crests representing consonants would be ' blurred. The Magistrate . need not . rely on the policeman’s word. The accused would have written his own unmistakable confession by merely talking..
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Dominion, Volume 20, Issue 78, 27 December 1926, Page 9
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141SOUND GRAPH Dominion, Volume 20, Issue 78, 27 December 1926, Page 9
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