How to Use STFT VI

[Student1]

I am using STFT to get the TFR of a signal. I am capturing a signal of particular frequency so idealy I should see a band at that frequency, but it shows me a band at lower frequency. Also how to control the representation color wise in STFT.

[JuanCarlos]

Hi,

I'm not familiar with TFR, however I am familiar with the STFT VI. I'm attaching an small example for you. It basically generates a chirp patern (sine wave with increasing frequency), performs short time freq analysis and draws the results in an intensity graph. You can then see how the frequency increases over time.

Take a look at this example nad let me know if you have any questions.

Regards,

Juan Carlos

N.I.