Hi, I'm using a piezoelectric stack to generate some ultrasound in water to caluclating maximum pressure inside the beaker i'm using, for that i'm using labview Spectrum analysis(FFT) to find the resonance peak. first i'm sending uniform white noise to check where the maximum harmonic i got then at that frequency i'm sending sinewave to get the resonace peak. that what i'm trying to do, but when i send white noise and , sine there is no difference in the FFT spectrum is anything wrong in my vi?
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