Here is my question, how can I remove data's noise from external environment?
Sorry I'm new with the signal anaysis, after using MPU6050 to get those vibration data, and then using FFT to get the plot, I receive the graph look like the example down below, can anyone please tell me how to explain it? I can't see any significant peaks on this plot, maybe the problem is the sampling frequency is too small? or do I need to provide some filter to remove the noise from the signal?
(By the way, I'm doing FFT with the sampling frequency 0.1703 Hz, and the data length is 30500.)