Hi, I'm using a piezoelectric stack to Generate some ultrasound in water to caluclating maximum pressure inside the beaker in'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 in'm sending sinewave to get the resonace peak. That What I'm trying to do, but when i send and white noise, sine there is no difference in the FFT spectrum is anything wrong in my we?
