Noise

In general usage, noise can be considered data without meaning; that is, data that is not being used to transmit a signal, but is simply produced as an unwanted by-product of other activities. In Information Theory, however, noise is still considered to be information.

Related Topics:
Data - Meaning - Signal - Information Theory - Information

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When speaking of noise in relation to sound, most often it is defined as meaningless sound of greater than usual volume. Thus, a loud activity may be referred to as noisy. However, conversations of other people may be called noise for people not involved in any of them.

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See:

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• Noise (environmental)
• Noise music
• Signal noise

See also: list of noise topics.

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