EST. 1903 - Presenting global influential leaders from business, labour, education & government through events
Perrine, Dr. J.O.
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The speeches are free of charge but please note that the Empire Club of Canada retains copyright. Neither the speeches themselves nor any part of their content may be used for any purpose other than personal interest or research without the explicit permission of the Empire Club of Canada.
The transformation and transmittals of waves. The telephone in the classification of transportation, and how that is so. Getting the sound out of a subscriber's mouth into another subscriber's ear. Visual demonstrations of sound waves. How the microphone works. A demonstration of what is going on inside a telephone. Other demonstrations are offered, allowing the audience to hear and "see" some music, witnessing the sound variations on an oscillograph. Reference to Alexander Graham Bell's work. Some words on the phenomenon of articulate speech. Some demonstrations on hearing sounds other than speech. Slides were also shown to illustrate the effect on both speech and music when certain vibrations were removed. Encrypting speech as it goes over the radio waves, and over the telephone wires. A demonstration of a long distance call to Montreal, encrypting speech by manipulating the frequencies through an electrical inverter. The geography of a long distance telephone call. Some slides are presented to show how a call is transmitted. Dr. Perrine then makes a long distance call to Mr. Napier of the British Post Office and they have a conversation about the progress of international communications and its effects on world matters.