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[Discuss-gnuradio] Complex sin & cos in grc

From: Mike B
Subject: [Discuss-gnuradio] Complex sin & cos in grc
Date: Thu, 17 Mar 2011 23:39:08 -0400

I am confused about the output of sin and cos sinks with complex output in grc.  I set up a test case where I generate a sin and a cosine and plot them on the same scope.  Their I & Q values overlap exactly, should they not be shifted by 90 degrees?  Or am I looking at this wrong?

Picture follows: https://picasaweb.google.com/113070091732402272078/GRC1#5585258130670915570  (you can't see the red or purple plots, but red is the same as blue, and purple is the same as green).  The flow graph is shown at left.


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