# How to find the ratio between the two frequencies in the fft

Hi, I'm Jean,

I need to find the ratio of the frequencies of 1st and 2nd graph fft.

Already, I received information of this site only. Mr. Alten helped me.

Now, I have to continue the same problem and need to find the ratio of the frequencies.

I will attach my vi file and the text file.

John,

Should you report the frequencies or the report of the amplitudes of the components at these frequencies?

The Information.vi of your multiple for the Signal Processing, extract > range of measures of waveform should do what you want.

The frequency resolution is not very good because you have cycles relatively little waveforms (2 ~ for the lower frequency). I added a few zeros to improve resolution, even if a larger sample of data would be better.

Lynn

Tags: NI Software

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