Time Delay of Arrival

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Dennis
Dennis on 24 Feb 2012
Answered: Linas Svilainis on 2 Dec 2019
hi there, I want to find time delay of a real time source using 2 channel microphone. First of all, I need to record the source in real time, then calculate it's delay using matlab. So, I don't have any idea to do that. Could someone help me , please.

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Answers (2)

Honglei Chen
Honglei Chen on 24 Feb 2012
  1. record the data.
  2. read the data into MATLAB
  3. do a cross correlation between two channels and translate the lag to time
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Dennis
Dennis on 24 Feb 2012
how to do step 3?
Wayne King
Wayne King on 24 Feb 2012
Have you looked at the documentation for xcorr?

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Linas Svilainis
Linas Svilainis on 2 Dec 2019
Try two functions below:
GetTOFfftPhase
GetTOFcos(MySignal,RefSignal)
Those do exactly what you need with subsample resolution

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