|Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
|12th January 2019, 10:51 PM||#1|
Join Date: Oct 2018
4th-Order filter = Ratios of two 2nd-Order filters?
I recall reading an article that described a 4th-Order filter in terms of two cascaded 2nd-Order filters with specific ratios of f3 and Q.
It looked something like this. The numbers aren't exact, just there to illustrate the point.
4nd-Order Filter with f3 and Q.
2nd-Order Filter 1
f1 = 0.89 * f3
Q1 = .765 * Q
2nd-Order Filter 2
f2 = 1.13 * f3
Q2 = 1.25 * Q
Is it really this simple? If so, is there a table of these ratios?
|Thread||Thread Starter||Forum||Replies||Last Post|
|3 way speaker with 1 order filters||Hyldal||Multi-Way||191||29th January 2008 07:29 AM|
|My 1st order butterworth filter better than 4th order L-R: Why?||philipreji||Solid State||61||1st March 2007 05:50 PM|
|Help on calculating first order SD filters||danielpasti||Class D||11||23rd August 2006 03:00 PM|
|second order lc filters||Ilianh||Multi-Way||29||25th November 2002 06:24 PM|
|New To Site?||Need Help?|