Saturday, October 27, 2012

Sampling and aliasing

This applet illustrates, in a very simple way, the concept of aliasing. If the sampling frequency is inadequate, the reconstructed signal will be completely erroneous, as can be seen, for example, in the initial setup.


This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com
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3 comments:

  1. Anonymous8/4/13 14:52

    This seems wrong. w-signal=w-sampling should show one sample pr. period of the signal, this shows about 7 samples.

    ReplyDelete
    Replies
    1. Pablo Rodríguez8/4/13 14:57

      That's true, it is wrong.

      I'll repair it as soon as possible.

      Thank you very much!

      Delete
  2. Anonymous5/6/14 15:45

    You just need to multiply your sampling frequenzy by Pi

    ReplyDelete

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