Avatar

Please consider registering
Guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —




— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed sp_TopicIcon
VA Moog Half-Ladder Filter
No permission to create posts
September 24, 2013
10:56 pm
Avatar
W Pirkle
Admin
Forum Posts: 143
Member Since:
January 28, 2017
sp_UserOfflineSmall Offline

I have added a new App Note describing an interesting "half ladder" filter that uses the Moog ladder topology but produces a 2nd order filter instead. As with the Moog Ladder, passband gain is reduced as Q increases, but not as much. The new app note is here:

http://www.willpirkle.com/proj.....notes/#AN8

If you have any questions or comments please feel free to post your questions to this Forum topic.

- Will

NOTE: the sample code implements both the full (4th order) and half (2nd order) filters.

September 30, 2013
4:23 am
Avatar
RMA
Member
Members
Forum Posts: 12
Member Since:
September 28, 2013
sp_UserOfflineSmall Offline

With the APF in the half ladder, will the phases match up with the full ladder?

I guess what I'm wondering is what would happen if you ran the input through both the full and half ladder and then mixed them? Would you get useful mixed states (something like a 18dB filter in the middle)? Or would you get weird comb filtering?

Forum Timezone: America/New_York

Most Users Ever Online: 36

Currently Online:
5 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

Skyler: 47

Peter: 41

Derek: 41

clau_ste: 39

Frodson: 38

Gwen: 32

EZB: 24

lppier: 23

Msaldaña: 18

Jorge: 17

Member Stats:

Guest Posters: 1

Members: 476

Moderators: 1

Admins: 4

Forum Stats:

Groups: 11

Forums: 30

Topics: 482

Posts: 1876

Newest Members:

sam, annaharris, Marie Weaver, kev, Steven, Mr Anderson, mguy, omelc

Moderators: W Pirkle: 143

Administrators: Tom: 65, JD Young: 80, Will Pirkle: 0, W Pirkle: 143