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<p>The problem of analyzing time limited complex wave forms having time variant frequency domain characteristics is discussed. A bell tone is selected as a wave form to analyze and it is then synthesized to produce an approximation to the original sound. An electronic device is constructed to simulate all required fog signals for a sailboat, including a rapidly ringing bell.
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<br>Subjects: FAST FOURIER TRANSFORM</div>
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Post, Jerry Lee</div>
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