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[Tftb-help] question about instfreq.m

From: John Petro Jr.
Subject: [Tftb-help] question about instfreq.m
Date: Tue, 25 May 2010 07:41:06 -0400

My question is about the instfreq.m file in the toolbox.  I understand instantaneous frequency to be the derivative of the phase of the analytic signal.  In the instfreq.m file the normalized frequency is calculated by:




I agree that the output that I receive from this seems to be correct, but I cannot find the relationship between these two.  Could someone please explain to me what I am missing, or point me in the right direction for a reference to this calculation. 


Thank you,







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