INVERTED SPEECH

Evening Post, Volume CV, Issue 151, 30 June 1928, Page 20

INVERTED SPEECH

A "SV-VriIJOTIC" LANGUAUK. "Inverted speech," tiie latest development of tho Bell Telephone Laboratories, has just b.eon demonstrated in Now York, when charming musical compositions by Fritz Kreisler wero turned into sounds that might have emanated from a thousand-piece feline orchestra in a back yard. It was : a vindication (says the New York correspondent of the "Christian Science Monitor") of the old story of the untrained musician who said he blew beautiful notes into his trombone but they : came out terribly distorted. .. .This "synthetic" language is designed to make wireless conversations secret by conducting the tones through a radio tube:controlled demodulator, which make the high tones low and the low tones high, at the same time so. distorting the middle tones that [ the resultant sounds are gibberish. One of the most interesting phases of the demonstration came when a record ex.plaining the.operation was placed on the gramophone. This record was made in. the synthetic or inverted language. As it was turned on, Mr..Grace held an ordinary telephone receiver before the gramophone and caught the sounds. These wore conveyed through a modulator and interpreted in understandable language. "Oya neon play-a-f ene crinkanape," spoken into the machine came out "Chicago; Telephone Company." New York cnuic out "mo wear.". ■ ' ■