ToolPythonIntermediate Filtering with scipy.signal: mains hum and noise out of an ECG freq = np.fft.rfftfreq(t.size, d=1 / fs)
ConceptPythonBeginner The Fourier transform: asking a signal how much of each frequency it contains freq = np.fft.rfftfreq(t.size, d=1.0) # cycles per hour; d is the sample spacing