Make a Noisy CopyWhen you make a copy of an audiocassette tape or a VHS tape, the copy has more noise than the original. If you make a copy of the copy, then you will get even more noise. Noise can be thought of as a random modification of the original. This principle is illustrated in this applet, which makes a copy of a melody. Since we are working in the digital domain, we could make a perfect copy each time. But instead, when we make a copy of the melody we will alter it randomly in a subtle way.
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