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From: J-P Karjalainen on 21 Jan 2010 04:46
Hello,

I would need to calculate a transfer function of two hydraulic pressure signals, measured in time domain. Moreover, I would specifically need one complex number value for the transfer function at the pumping frequency of the measurements.

Is this possible using the tfestimate- function? Or is there some other tool for this?

If it is possible to use tfestimate, could somebody give me an example of using the function, since the parameterization is quite unclear to me?

I have:

- two pressure signals, p1 and p2
- pumping frequency of 100 hz
- measurement frequency of pressure is 50 kHz
- length of pressure arrays is 50000 samples (1 second)

I would really appreciate any hints!

BR J-P
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