http://superpositioned.com/articles/tag/estimation en-us 40 Electronics news and projects in the frequency domain <p>There are a lot of LEGO Mindstorms robots out there, but I finally found the best. <a href="http://www.convict.lu/Jeunes/ultimate_stuff/Nic_1.htm">Nic_1</a> is a Johnny V impersonator that detects the direction of sound and <a href="http://www.convict.lu/Jeunes/ultimate_stuff/Nic_1.htm">follows it</a>. Detection is accomplished by calculating the cross-correlation of two audio signals from the <a href="http://www.convict.lu/Jeunes/Gaston/Binaural.htm">binaural sensor</a>. The data is used to estimate the phase difference between the them. (Videos tracking Kelly Clarkson included!)</p> <p><img src="http://superpositioned.com/files/Nic_1.jpg" alt="Nic_1: Johnny V impersonator"/></p> <p>I can&#8217;t wait any longer for LEGO Mindstorms NXT in August. 32 bits, servos, and mics, oh my!</p> Fri, 10 Feb 2006 07:01:00 -0800 urn:uuid:e5374473-0c32-453f-94bc-8768fc214988 Matthew http://superpositioned.com/articles/2006/02/10/nic_1-sound-following-robot Cool Robots estimation lego