The video shows the road map to build a very smart Audio Spectum Analyzer by Python and PySide2 (or PyQt5). The application doesn't use numpy library. The Fast Fourier Transform of the audio signal is obtained by a very short pyd module (just 27KBytes) named _kiss_ftt.pyd
In order to read the output audio a dedicated binding (with WASapi loopback) of portaudio was created.
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