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from | Encarta |  |
Amplification, Distortion, and Noise |
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| Ideally an amplified signal will have the same form as the original signal, but it will be more powerful. Distortion occurs when the amplified signal no longer matches the original signal, for example when the voltage range of the signal exceeds the range of the amplifier, and part of the wave is cut off. Noise occurs when additional signals are superimposed on the amplified signal during transmission—for example, during an electrical storm. | ||||||
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© 2008 Microsoft
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