I have a quastion about difference between 1st order 2nd order filters and other filters like Butterworth, Linkwitz-Riley, Chebyshev, Bessel.
What does mean 1st or 2nd order filter in digital domain? I know that order is connected with slope but a don't have idea what are differences. I methinks that 1st and 2nd order filters are equivalent analog RC filters, but I'm not sure.
Can You give any idea where can I read about it.
Best regards
Michał Kmiecik
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