Peter Kootsookos Blog on DSPRelated.com https://www.dsprelated.com/blogs-1/nf/Peter_Kootsookos.php Peter Kootsookos Blog on DSPRelated.com https://www.dsprelated.com/blogs-1/nf/Peter_Kootsookos.php https://d23s79tivgl8me.cloudfront.net/user/profilepictures/31188.jpg en-US Thu, 14 May 2026 07:22:16 +0000 1778743336 Deesspee #5 https://www.dsprelated.com/showarticle/81.php

]]> Thu, 17 Sep 2009 02:44:14 +0000 Peter Kootsookos The Nature of Circles https://www.dsprelated.com/showarticle/57.php When calculating the mean of a list of numbers, the obvious approach is to sum them and divide by how many there are.

Suppose I give you a list of two numbers:

  • 0
  • 359

What is their mean? The obvious answer is 179.5.

If I told you that the numbers were compass bearings in degrees, what would your answer be then? Does 179.5 seem correct?

In the case of compass...]]> Sat, 21 Feb 2009 22:21:35 +0000 Peter Kootsookos Correlation without pre-whitening is often misleading https://www.dsprelated.com/showarticle/52.php Correlation, as one of the first tools DSP users add to their tool box, can automate locating a known signal within a second (usually larger) signal. The expected result of a correlation is a nice sharp peak at the location of the known signal and few, if any, extraneous peaks.

A little thought will show this to be incorrect: correlating a signal with itself is only guaranteed to...]]> Tue, 19 Feb 2008 03:26:04 +0000 Peter Kootsookos