filter Q Question - Page 4 - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level

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
Reply
 
Thread Tools Search this Thread
Old 6th September 2013, 05:31 AM   #31
diyAudio Member
 
mondogenerator's Avatar
 
Join Date: Sep 2009
Location: City Of Villans
Blog Entries: 1
Even if i could, why?
__________________
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson
  Reply With Quote
Old 11th September 2013, 05:52 AM   #32
RNMarsh is offline RNMarsh  United States
diyAudio Member
 
RNMarsh's Avatar
 
Join Date: May 2012
Location: 2457 Cascade Trail; Cool, CA. 95614
You will see the time delay affects of the filter's Q.

-RM
  Reply With Quote
Old 12th September 2013, 04:57 AM   #33
diyAudio Member
 
mondogenerator's Avatar
 
Join Date: Sep 2009
Location: City Of Villans
Blog Entries: 1
As in impulse response OR phase offset due to the filter?
Or group delay?
__________________
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson
  Reply With Quote
Old 12th September 2013, 05:53 AM   #34
RNMarsh is offline RNMarsh  United States
diyAudio Member
 
RNMarsh's Avatar
 
Join Date: May 2012
Location: 2457 Cascade Trail; Cool, CA. 95614
Default Filter Q has its affects -

Quote:
Originally Posted by RNMarsh View Post
You will see the time delay affects of the filter's Q.

-RM
Such as:

Does not sound flat.jpg

It does not sound flat even though it measures flat frequency response. When part of a cross-over, the decay time/energy at the cross-over region of a LP/HP filter will have its audible affects.

-RM

Last edited by RNMarsh; 12th September 2013 at 05:57 AM.
  Reply With Quote
Old 12th September 2013, 12:09 PM   #35
diyAudio Member
 
mondogenerator's Avatar
 
Join Date: Sep 2009
Location: City Of Villans
Blog Entries: 1
Group delay then?

I see your point,but the ~1msec in your example doesn't phase me much tbh.
__________________
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson
  Reply With Quote
Old 12th September 2013, 04:46 PM   #36
RNMarsh is offline RNMarsh  United States
diyAudio Member
 
RNMarsh's Avatar
 
Join Date: May 2012
Location: 2457 Cascade Trail; Cool, CA. 95614
Quote:
Originally Posted by mondogenerator View Post

I see your point,but the ~1msec in your example doesn't phase me much tbh.
who cares about that? its only to illustrate a point I am making. the delay can be anything depending on your filter freq and Q.

-RM
  Reply With Quote
Old 12th September 2013, 06:51 PM   #37
diyAudio Member
 
mondogenerator's Avatar
 
Join Date: Sep 2009
Location: City Of Villans
Blog Entries: 1
Anything? Within bounds im sure,depending on phase rotation id imagine. Imnot sure I follow you entirely. I don't have the ability to model in the way you have demonstrated, any help here?

My LP for eg is 5th order, RC @ 500Hz, 3.8kHz @ Q=0.618, 2.8kHz @ Q = 1.618.
__________________
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson
  Reply With Quote
Old 13th September 2013, 12:42 AM   #38
RNMarsh is offline RNMarsh  United States
diyAudio Member
 
RNMarsh's Avatar
 
Join Date: May 2012
Location: 2457 Cascade Trail; Cool, CA. 95614
Quote:
Originally Posted by mondogenerator View Post
Imnot sure I follow you entirely. I don't have the ability to model in the way you have demonstrated, any help here?

My LP for eg is 5th order, RC @ 500Hz, 3.8kHz @ Q=0.618, 2.8kHz @ Q = 1.618.
The plot was from an active filter... passive would do same (speaker cross-over etc.) Do you have access to MLSSA or MLS software?

Thx-RNMarsh
  Reply With Quote
Old 13th September 2013, 04:37 AM   #39
diyAudio Member
 
mondogenerator's Avatar
 
Join Date: Sep 2009
Location: City Of Villans
Blog Entries: 1
Sorry, my meaning wasn't clear. I meant that i don't have MLSS.
__________________
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson
  Reply With Quote
Old 13th September 2013, 04:45 AM   #40
RNMarsh is offline RNMarsh  United States
diyAudio Member
 
RNMarsh's Avatar
 
Join Date: May 2012
Location: 2457 Cascade Trail; Cool, CA. 95614
Oh well. Just note that flat response and low distortion isnt all... there is this other dimension that affects the sound/performance, also.

Thx-RNMarsh
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
lattice filter question eccdbb Multi-Way 14 20th May 2014 05:28 PM
Filter sequence in a Bandpass filter question BachAudioDK Multi-Way 3 28th January 2012 10:20 PM
Question about input filter? Rafael L Solid State 4 2nd February 2010 11:30 AM
Active filter question youyoung21147 Parts 3 21st May 2006 05:27 PM
Pi filter question Eccu Solid State 1 6th May 2002 03:45 PM


New To Site? Need Help?

All times are GMT. The time now is 01:35 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2