Görtzel filter implementation in LabVIEW?

[J.C._Andersen]

Hi.

I am looking for a simple VI with an implementation of a Görtzel algorithm. Since I am not a signal processing wiz. I would like to know if someone in here have a VI in the desk drawer with a just this implementation?

Thanks.

[Pete.Dunc]

Looks like it is part of the MathScript RT Module - link.  It also used to be in the DSP Module.

If you are using either of those it is already there, otherwise the help for for DSP module gives the algorithm.

[J.C._Andersen]

Thank you, this is what I was looking for

Best regards,

Jens Christian Andersen.

[Pete.Dunc]

No problem.

Out of interest, which implementation have you gone for?  I'm also interested in whether this could speed up some work I am undertaking.

[Siriusly]

Is it possible to to perform this function in LabVIEW without MathScript and/or Real-Time?  If so does anyone have an example?

[Siriusly]

Has anybody been able to do the Görtzel / Goertzel function natively in LabVIEW without using Matlab or RT or is it not efficient enough? 

[A.Rohde]

It should be no problem to implement this functionality in LabVIEW.

If you look at the DSP function the mathematical representation is already given. So you basically just need to do the functions in LabVIEW. 

Remember where there is mentioned (z^(-1)) that means the signal value the last time. so that is equal to putting in a shift register, and z^(-2) is the signal delayed 2 times).

Best Regards

Anders Rohde