- https://www.mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/WAVE.html
- https://en.wikipedia.org/wiki/Short-time_Fourier_transform
- https://zipcpu.com/dsp/2020/11/21/spectrogram.html
- https://github.com/audacity/audacity/blob/master/src/SpectrumAnalyst.cpp#L91
- https://github.com/audacity/audacity/blob/master/libraries/lib-fft/FFT.h
- https://www.imft.fr/wp-content/uploads/2021/03/psdtheory.pdf
- https://dsp.stackexchange.com/questions/8133/psd-power-spectral-density-explanation