A New Principle of Sound Frequency Analysis
Description:
"In connection with the study of aircraft and propeller noises, the National Advisory Committee for Aeronautics has developed an instrument for sound-frequency analysis which differs fundamentally from previous types, and which, owing to its simplicity of principle, construction, and operation, has proved to be of value in this investigation. The method is based on the well-known fact that the Ohmic loss in an electrical resistance is equal to the sum of the losses of the harmonic components of…
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Date:
March 23, 1931
Creator:
Theodorsen, Theodore
Item Type:
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Report
Partner:
UNT Libraries Government Documents Department