Spectrogram from scipy.signal with Python

1. What is spectrogram of a signal?
2. What is Nperseg in Python?

What is spectrogram of a signal?

A spectrogram is a visual way of representing the signal strength, or “loudness”, of a signal over time at various frequencies present in a particular waveform. Not only can one see whether there is more or less energy at, for example, 2 Hz vs 10 Hz, but one can also see how energy levels vary over time.

What is Nperseg in Python?

npersegint, optional. Length of each segment. Defaults to None, but if window is str or tuple, is set to 256, and if window is array_like, is set to the length of the window. noverlapint, optional. Number of points to overlap between segments.