Hi Tim. Thank you for some great and really informative tutorials, there is so much to be learned here!
I have a question, in this tutorial there is something I can´t comprehend:
In the last part of the tutorial - where you copy/paste parts of your overlapped fft-patch from Tutorial 2, you leave the numbers from that tutorial - that had fft-sizes of 512 samples. So the count-up for the window-indexing is still 512 samples with an overlap/delay of 256 samples (and the window-buffer is set to 512 samples), eventhough the fft-size is 1024 samples big with an overlap of 512 samples.
The spectrum looks neat (with a dc-offset/noisefloor around -70 dB).
-Is match between window-indexing and fft-sizes not that important, or how is it?
I tried to dial in numbers according to your Tutorial 2 setup, so the fft- and window-sizes match with corresponding overlaps etc. The result is a noise floor around -96 dB, but also with quit a lot of unaccounted for noise down there - eventhough for practical applications this would probably be acceptable.
What is the correct way to do this?