In my experience, another source of great DSP explanations is Professor fred harris [1]. I attended a 2-day lecture by him (20 years ago) and it was beautiful

In my experience, another source of great DSP explanations is Professor fred harris [1]. I attended a 2-day lecture by him (20 years ago) and it was beautiful in its clarity. [1] https://en.wikipedia.org/wiki/Fredric_J._Harris https://en.wikipedia.org/wiki/Fredric_J._Harris