Given a noisy signal generated by a SubVi, I am trying to find and display some basic information about the signal. I've found the frequency of the underlying signal, and I have a dB value for SNR given to me by SINAD, but I am supposed to find the frequency of the largest noise component in the signal and get an SNR based off of that frequency. The fundamental frequency of the signal itself is the largest spike at 260Hz on the Power Spectrum graph. The second peak at a little over 800Hz is not a harmonic, so is this the frequency of the largest noise component? Also, when I run the signal through a Butterworth filter with a 5Hz cutoff, I get peaks below 10Hz on the Power Spectrum graph. What do these values represent?
