Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

Freq measurements and Hypex Filter Design adjustments
Freq measurements and Hypex Filter Design adjustments
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 2nd October 2019, 01:00 AM   #211
PLB is offline PLB  United Kingdom
diyAudio Member
 
Join Date: Sep 2008
Location: The backbone of England
Hi Steve,

Are you aware of the "Pink Cutoff(Hz) function in ARTA that has a selectable HP filter used for making measurements on tweeters?
When a measurement is made with this function set to say 1KHz, the inverse of this function is then applied to the data after aquisition. This provides you with a frequency response of the speaker without the response of the 1KHz filter!
So you don't need to apply a 1KHz crossover to the tweeter in order to protect it from excesive low frequency excursion.

Peter
Attached Images
File Type: jpg Pink cutoff function.jpg (68.6 KB, 71 views)
  Reply With Quote
Old 2nd October 2019, 07:48 AM   #212
Steve2111 is offline Steve2111
diyAudio Member
 
Join Date: Jun 2019
Default Freq measurements and Hypex Filter Design adjustments

Hi Peter,

No was not aware. But I see that it is not available under "Sweep"?
Not used Pink Noise for measurement before
  Reply With Quote
Old 6th October 2019, 06:16 PM   #213
Steve2111 is offline Steve2111
diyAudio Member
 
Join Date: Jun 2019
Set up my living room for measurements again.
Just a few questions on ARTA set up.

I'm going to be measuring Tweeter, Farfield (1meter)
Going to risk HighPass LR4 at as low as 500Hz. (don''t know how to do with Pink Noise, Peter, as other drivers measured with Sweep)

ARTA Impulse response measurement/ Signal recording Window

Under Sweep generator:

Sequence length, 16K to 256K which and why?
Sample rate, I presume 48000?
Output Volume 0?
Log freq sweep - tick or not?

If later measure with Hypex FD (not done before) anything to consider?
  Reply With Quote
Old 7th October 2019, 01:41 PM   #214
AllenB is offline AllenB  Australia
diyAudio Member
 
Join Date: Oct 2008
Sweep is good, it allows you to gate.

Regarding length.


0=0dB, normal full output.

Choose log sweep.
  Reply With Quote
Old 7th October 2019, 05:54 PM   #215
Steve2111 is offline Steve2111
diyAudio Member
 
Join Date: Jun 2019
Default Freq measurements and Hypex Filter Design adjustments

Thanks Allen
Trying to understand the length link
  Reply With Quote

Reply


Freq measurements and Hypex Filter Design adjustmentsHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Capacitor to filter low freq buzz? steve71 Multi-Way 15 20th January 2009 05:48 PM
Freq resp measurements on the Apex Jr 3" M&K twin cone? Brisso57 Multi-Way 0 11th October 2007 08:38 PM
Notch filter at x'over freq. of woofer? grantnsw Multi-Way 23 25th August 2006 12:39 PM
problem with freq filter Magnat biatch Multi-Way 1 27th November 2005 04:40 PM
Freq Response Measurements of PHL drivers akunec Multi-Way 18 20th February 2005 12:39 AM


New To Site? Need Help?

All times are GMT. The time now is 07:07 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki