Welcome, Guest
Username: Password: Remember me

TOPIC: Difference between 2nd order and Butterworth

Difference between 2nd order and Butterworth 8 months 3 weeks ago #49910

  • miszkoo
  • miszkoo's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 1
  • Karma: 0
Hi,

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
The administrator has disabled public write access.

Difference between 2nd order and Butterworth 3 months 3 days ago #53154

  • denver8me4dinner
  • denver8me4dinner's Avatar
  • Offline
  • Gold Boarder
  • 3038564518
  • Posts: 269
  • Thank you received: 54
  • Karma: 6
Yes it’s same principle as rc or analog filters

After the pass band the attenuation of the filter grows proportionally to the number of poles...

The digital filter is a digital representation of the analog filter.

I’m pretty sure it’s the maximum number of delay elements in the design IIRC

Instead of caps and coils it’s coefficients and biquads ,
Hope that helps
The administrator has disabled public write access.
Moderators: devteam