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  • $\begingroup$ Thank you, this gives me new pointers to look at. I don't understand n your answer, how you calculate the cutoff as you say $ f_{cutoff} = \frac{f_{s}}{N} $, but you don't state what N, you have used with 44.1 kHz. $\endgroup$ Commented Aug 10, 2020 at 12:40
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    $\begingroup$ Sorry, fixed. I was using N=32 as an example. $\endgroup$ Commented Aug 10, 2020 at 14:06