Make a Noisy Copy
When 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.
To do:
- Click on the drawing of the melody to hear it. It is the box with the dots.
- Make a copy by hitting the Make a Noisy Copy button. It may be exactly the same or slightly different.
- Play the copy by clicking on it.
- Keep making copies and notice how they get further and further from the original.
- Hit Reset and try it again with a new song.
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