Is it possible to extract analog input voltage signal frequency

[AnkitG]

Hi all,

Is it possible to extract the frequency of the input analog signal(voltage), I want to extract to extract the frequency of it and feed it to the output signal (generated by waveform generator VI), so that both signal can have same frequency.

is it possible

[crossrulz]

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@AnkitG wrote:

is it possible

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Look in the Signal Processing->Waveform Measure palette.  There are a few VIs in there for extracting the frequecy/frequencies in a signal.

[AnkitG]

But I have analog Voltage signal task , how can I use " Extract Tone Vi's as they use time signal input? 

[crossrulz]

If you just have a single sample, there is absolutely no way to get the frequency out of it.  You need to have many samples at the same sample rate.  And the more samples you have, the more accurate your frequency measurement will be.

[AnkitG]

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@crossrulz wrote:

If you just have a single sample, there is absolutely no way to get the frequency out of it.  You need to have many samples at the same sample rate.  And the more samples you have, the more accurate your frequency measurement will be.

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Can you give me an example?
My input signal is a continous signal , I have a vi which generate the put signal when an in put signal is detected all I want now is to match the frequency of the input and output signal.

Please see attached vi

[crossrulz]

Have the DAQmx Read output the waveform.  It will make things easier on you.