| 31. | This fact allows one to reduce the amount of information required by ignoring the high frequency components.
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| 32. | It has been noted that edgelike features have many of their frequency components in the same phase.
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| 33. | However, computer-based filtering procedures can be used to deconstruct an image into its individual spatial frequency components.
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| 34. | As described above, many physical processes are best described as a sum of many individual frequency components.
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| 35. | Then, the Fourier transform of this would tell you where most of the frequency components are located.
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| 36. | One could then re-synthesize the same sound by including the frequency components as revealed in the Fourier analysis.
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| 37. | However, when applied to a signal with multi frequency components, cross terms appear due to its quadratic nature.
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| 38. | The down conversion does not affect the frequency deviation; it only shifts all the signal frequency components down.
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| 39. | Passing a signal through such a channel results in the removal of frequency components above this cutoff frequency.
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| 40. | That is typically approximated by filtering the original signal to attenuate high frequency components before it is sampled.
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