How to detect peak frequencies in the frequency domain?

[LD_PVL]

Hello,

I have built a small test program consisting of two sine waves of variable frequencies, there sum is found and subsequently FFT is performed on it to find the two peak frequencies. I have been trying to somehow display the values of these two frequencies but I just can't find a way.

I searched the forum before posting the question, many of them suggested using the Extract Multiple Tone Information VI which I tried and couldn't get any results. 

I have attached my file. Please have a look. If you know any threads on the forum directly related to my problem, please just cite it.

Thanks,

LD

[RavensFan · Accepted solution]

Don't wire the Extract Multiple Tone to the wire coming out of the Sprectral Express VI.  You need it to operate on the wire after the two signals are summed.

[LD_PVL]

Exactly, I just found that out too ... how silly of me.

Thanks very much for replying 😉

LD