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

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 June 2019, 08:51 PM   #11
FredrikC is offline FredrikC  Norway
diyAudio Member
 
Join Date: Aug 2010
Great, just tried the ATH15 example and it generates the STL and the Abec project files, but ABEC freezes when I try to open the project file. The STL looks fine.

Does it matter that I use Abec Pro?

Where to find the dll should be in the documentation or perhaps distrubte the .dll with your software if gmesh allow it.


EDIT: My bad, it just took some time to load because the mesh was so fine. Much finer than the STL??

Last edited by FredrikC; 6th June 2019 at 09:04 PM.
  Reply With Quote
Old 6th June 2019, 09:06 PM   #12
mabat is offline mabat  Czech Republic
diyAudio Member
 
mabat's Avatar
 
Join Date: Sep 2004
Location: Prague
I have no problem opening it, on my PC it's like three seconds. The density should be the same in fact.


For the dll, the manual says:

What you will need
...
- Gmsh SDK (available at Gmsh: a three-dimensional finite element mesh generator with
built-in pre- and post-processing facilities
you need just the file gmsh-4.3.dll)

What more do you need?
OK, maybe I could be even more clear on this but what's the use when people don't read it.
  Reply With Quote
Old 6th June 2019, 09:21 PM   #13
FredrikC is offline FredrikC  Norway
diyAudio Member
 
Join Date: Aug 2010
My bad Marcel, I overlooked the SDK part. Now that it is documented here, people will probably not repeat my mistake.

No idea why the STL and mesh file is so different in resolution yet.

Do you have any such issue Patrick Bateman?
  Reply With Quote
Old 6th June 2019, 09:22 PM   #14
mabat is offline mabat  Czech Republic
diyAudio Member
 
mabat's Avatar
 
Join Date: Sep 2004
Location: Prague
Could you please upload the files? Did you change anything in the script?

- Oh, now I see. It won't be the same but I wouldn't say it could differ as much.

Last edited by mabat; 6th June 2019 at 09:32 PM.
  Reply With Quote
Old 6th June 2019, 09:34 PM   #15
Patrick Bateman is offline Patrick Bateman  United States
diyAudio Member
 
Patrick Bateman's Avatar
 
Join Date: Oct 2006
Location: San Diego
Quote:
Originally Posted by FredrikC View Post
My bad Marcel, I overlooked the SDK part. Now that it is documented here, people will probably not repeat my mistake.

No idea why the STL and mesh file is so different in resolution yet.

Do you have any such issue Patrick Bateman?
I'm seeing the following:

In the STL, I have 1344 vertices and 2592 faces.

In the MSH, I have 849 nodes and 1588 triangles.
  Reply With Quote
Old 6th June 2019, 09:40 PM   #16
mabat is offline mabat  Czech Republic
diyAudio Member
 
mabat's Avatar
 
Join Date: Sep 2004
Location: Prague
To be precise: For the ath15 horn, three files are written: STL+MSH (exactly the same because these are from the same dataset) and ABEC mesh, which is made separately and that may be different. You can set the density of the ABEC one with the Mesh.* parameters.
  Reply With Quote
Old 6th June 2019, 09:53 PM   #17
mabat is offline mabat  Czech Republic
diyAudio Member
 
mabat's Avatar
 
Join Date: Sep 2004
Location: Prague
FredrikC: I got the files, thanks. Now I can see you trouble - the density in your files is about five times higher than what I get. Now I don't have a clue how's that possible
Attached Images
File Type: png ath15-2x.png (225.9 KB, 665 views)

Last edited by mabat; 6th June 2019 at 09:58 PM.
  Reply With Quote
Old 6th June 2019, 10:03 PM   #18
mabat is offline mabat  Czech Republic
diyAudio Member
 
mabat's Avatar
 
Join Date: Sep 2004
Location: Prague
This is my ABEC mesh -
Attached Files
File Type: zip ath15_abec.zip (50.7 KB, 30 views)
  Reply With Quote
Old 6th June 2019, 10:12 PM   #19
FredrikC is offline FredrikC  Norway
diyAudio Member
 
Join Date: Aug 2010
Indeed, yours is much much more coarse. I have no idea why.

I tried downloading it all again, putting it on my c drive, load the example again. Same result. I'm running Win 10 on a eight core AMD Ryzen 2700. Is there any multi-threading involved in this process?
  Reply With Quote
Old 6th June 2019, 10:18 PM   #20
mabat is offline mabat  Czech Republic
diyAudio Member
 
mabat's Avatar
 
Join Date: Sep 2004
Location: Prague
Patrick, how did you get your numbers? When I open my ath15.msh (not the ABEC one) in Gmsh I get these counts -
I will try to figure out, it must be some Gmsh thing. Like it took some smaller values for the mesh size at each point. But why?
Attached Images
File Type: png ath15_gmsh_stat.png (15.3 KB, 642 views)
  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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Easy horn (Eazy Horn) still work? Alternatives? Soldermizer Subwoofers 2 4th March 2014 05:01 PM
For sale: Sound easy V18 & Acoustic-dimension stepped attenuator Tazzz Swap Meet 8 3rd November 2012 08:00 AM
easy exponential horn speakers anyone? 12345chris Full Range 9 21st March 2012 11:32 AM
Easy horn, quadrant horn? Hentai Multi-Way 2 29th January 2012 08:50 AM
An easy to build classic horn? dabbler Multi-Way 22 1st September 2011 08:01 AM


New To Site? Need Help?

All times are GMT. The time now is 05:29 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki