Oct 17, 2011 #1 E electroboy Member level 5 Joined Dec 30, 2010 Messages 86 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,879 cant understand this negative frequency concept clearly ..please help..How can frequencies in frequency spectrum be negative? thanks in advance... Attachments Capture.JPG 53.5 KB · Views: 130
cant understand this negative frequency concept clearly ..please help..How can frequencies in frequency spectrum be negative? thanks in advance...
Oct 17, 2011 #2 J joseMiguel Member level 5 Joined Jan 10, 2011 Messages 86 Helped 10 Reputation 20 Reaction score 10 Trophy points 1,288 Location Montpellier FRANCE Activity points 1,967 Hi, If your consider your system "causal" signal just exist after 0. The spectrum can not be negative. We just use spectrum as negative because it is associated with simplest learning mathematical concept. Hope ti helps you joseMiguel
Hi, If your consider your system "causal" signal just exist after 0. The spectrum can not be negative. We just use spectrum as negative because it is associated with simplest learning mathematical concept. Hope ti helps you joseMiguel
Oct 17, 2011 #3 LvW Advanced Member level 6 Joined May 7, 2008 Messages 5,915 Helped 1,754 Reputation 3,514 Reaction score 1,366 Trophy points 1,393 Location Germany Activity points 40,554 This question ("are there negative frequencies"?) has been extensively dicussed in this forum some time ago. Try the search function.
This question ("are there negative frequencies"?) has been extensively dicussed in this forum some time ago. Try the search function.