LISTENING IN NOISE
NEW TELEPHONE APPLIANCE. j/ONDON, September 7. “ Talking through your neck” i« now a scientific fact. Exhibits at the Olympia Mechanical Exhibition include a telephone for use in rooms full of noise. Tho appliance catches the speaker’s vibrations at his throat and conveys his words clearly lo the listener.
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https://paperspast.natlib.govt.nz/newspapers/ESD19270917.2.78
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Evening Star, Issue 19664, 17 September 1927, Page 6
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51LISTENING IN NOISE Evening Star, Issue 19664, 17 September 1927, Page 6
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