Summary
By working through this document you should understand the
relationships between time and frequency domain. You should
understand the following points
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Signal shape dictates the overall shape of the frequency transform
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Signal duration is related to the width of the frequency transform
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Sinusoidal signals contain single frequency components
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A time delay is equivalent to a linear phase change in frequency
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Multiplication in time is equivalent to convolution in frequency
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Convolution in time is equivalent to multiplication in frequency