Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1

TOPIC:

Difference between 2nd order and Butterworth 3 years 4 months ago #49910

  • miszkoo
  • miszkoo's Avatar Topic Author
  • Offline
  • New Member
  • New Member
  • Posts: 1
  • Thank you received: 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

Please Log in or Create an account to join the conversation.

Difference between 2nd order and Butterworth 2 years 10 months ago #53154

  • denver8me4dinner
  • denver8me4dinner's Avatar
  • Offline
  • Platinum Member
  • Platinum Member
  • 3038564518
  • Posts: 503
  • Thank you received: 93
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

Please Log in or Create an account to join the conversation.

Difference between 2nd order and Butterworth 2 years 2 months ago #57037

  • denver8me4dinner
  • denver8me4dinner's Avatar
  • Offline
  • Platinum Member
  • Platinum Member
  • 3038564518
  • Posts: 503
  • Thank you received: 93
The only thing I would add , is capacitive resistance and inductive reactance will affect the analog filter where the digital filter does not see what goes on between the amp and said loudspeaker
 

Please Log in or Create an account to join the conversation.

  • Page:
  • 1
Moderators: devteam