Pachyderm Acoustic

Information

Pachyderm is a plugin largely used by Designers and Scientists alike to simulate acoustics in buildings, rooms, cities, and other settings.

Website: http://www.orase.org
Location: Earth
Members: 192
Latest Activity: Aug 17

Hello Pachyderm Users,

We are going through an exciting period, including the startup of an organization to support the growth of Pachyderm, and extend the educational agenda of the project. In the next few weeks, we will be submitting our long-form 501(c)3 application, which will give us the rights of a not-for-profit organization established in the state of Connecticut. As part of the transition, we are phasing out the old website. The new site will be up in the next few weeks, and you can find it at:

www.orase.org

We are looking forward to the next phase of this project, and we hope that you will be there with us to learn and continue to support us!

kind regards,

Arthur van der Harten

Executive Director

Open Research in Acoustical Science and Education

ORASE

Discussion Forum

Started by valentina. Last reply by valentina Jun 20.

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Comment by HarshS on June 24, 2021 at 5:37am: Hello,
Is it possible to simulate and study resonance based phenomena such as Helmholtz resonator or Passive Destructive Interference in Pachyderm; and get the Absorption Coefficient across the frequency band?

Comment by Ander Perez on May 10, 2021 at 2:00am: Hello,

I am trying to do some mapping calculations, but every time I start a calculatoin (Settings: Specific Ray Count, default settings), receiver displacement: Audience) Rhino crushes.

I've tried this in Rhino 6 and Rhino 7, but it keeps crushing. Is there something I am missing? Thanks for your help!

Comment by Arthur van der Harten on April 15, 2021 at 9:40pm: Hi Konsta,

I think I need more information. Would you mind emailing me a detailed explanation of the issue you are dealing with?

Info@orase.org

Thanks,

Arthur

Comment by Konsta on February 10, 2021 at 1:01am: Hi everyone!
I have installed Pachyderm on Rhino 6 but it cannot calculate anything. Could be that there is no option to assign a material under materials tab. Any thoughts?

Comment by Behdad on December 15, 2020 at 10:15am: Hello Everyone, I have installed Pachyderm. But when I open the folder of the program in "Program Files", the Rhino Plug-in file does not exist. I have tried to rerun the installation and chose the repair option but it did not solve the problem. Has anyone had this problem before?

Comment by idspaceman on October 1, 2020 at 10:58am: Hi, unfortunately none of the two links to the website work. Both links are broken or lead me to a page with a password protection.

Comment by Arthur van der Harten on September 4, 2020 at 11:56am: Hi Sebastian,

If your model is very complicated, this may be the reason. Occasionally, Rhino encounters a piece of geometry that can't generate a mesh, and then it fails pachyderm. I've tried to catch some of these cases, but some still elude us.

I can help you troubleshoot the model if you like. Can you send me the file to info@orase.org?

Arthur

Comment by Sebastian Novoa on August 31, 2020 at 10:38pm: Hello Arthur,

I'm trying to do a calculation inside a small chamber music hall (~490sqm). After applying a material to every surface and preparing everything (as told in this tutorial https://vimeo.com/247018860) I click on Calculate Solution and the button grays out and the message "Solution exception:Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index" appears and I can't try again until restarting Rhino. I know this has happened before but I can't find a solution. I have a fairly complex geometry with reflective panels hanging from the ceiling, I don't know if it may be affecting. Thank you in advance.

Comment by Petros F. on April 15, 2020 at 10:41am: Hi again Arthur,

Thank for replying, my bad indeed that material coefficient was able to assign data just fine as you mentioned.

I am facing a different problem atm,

Trying to use SurfaceSource, every time I assign a surface as a source Pachyderm won't run the calculations (hybrid model>impulse>calculate solution). The same 3D model will run the calculation with the other sources (dodecahedron, speaking person)

I am a) inserting SurfaceSource b) selecting a source surface c) choosing SPL for every 62.5/.../8000Hz, and I do get the dodecahedron speaker icon over the selected surface. When I hit calculate solution nothing is happening no msg in the command line.

Also when I am in Rhino environment Properties (Rhino Properties>Sound Source Control) when selecting the Surface source the octave/SWL/SPL is not present, at the same time if I choose a different source the chart will present.

Thank you in advance

Comment by Arthur van der Harten on December 16, 2019 at 11:54am: Hi Petros,

I just tested both of those systems, and they seem to be working fine (both openings of .pac1 files, and custom absorption coefficients). However, if you have found something I can't reproduce, the best thing you could do is send me the .pac1 file, so that I can look into it.

Regarding the absorption coefficients, try again. I'm very certain that system works fine.

Arthur