[mathcad] Re: DSP method

Author: Eden Mei Posted: Wed, 11 Jan 2006 10:38:31 -0800

Not sure what function is available, but the standard approach would be to run a correlation against the two streams and the peak value of the correlation function would be at the correct time offset

TTFN
From: Mark Smith
To: Mathcad Discussion List
Sent: Wednesday, January 11, 2006 9:26 AM
Subject: [mathcad] DSP method

I have 2 digitised signals (A2D sampled) which are very similar in shape but differ by a fixed time difference, can anyone suggest methods which will allow me to calculate what the time difference is?
I have the feeling that if i can somehow use all the data I should get a much more accurate value than say just comparing a zero crossing of the 2 traces which I think will be far more susceptable to noise in the signal.

Thanks in advance
mark

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