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: 190
Latest Activity: Nov 13

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

Software capabilities 5 Replies

Hi!This is very interesting, but I have some questions about the applicability / limitations of your software. What it can and what it can not do. I am an architect, used to formfinding but am not…Continue

Started by Ludvig Haav. Last reply by Tomas Green Nov 13.

Actual reverberation time and error from Pachyderm simulation 14 Replies

Hi all,I'm currently working on calculating reverberation time using Pachyderm Acoustics.I have a reverberation chamber close to me, and I have an environment where I can check the actual…Continue

Started by FUYU. Last reply by FUYU Jun 25.

Pachyderm does not load 4 Replies

Hi, I loaded Pachyderm into Rino 7 and tried a simple model in a box and it immediately crashed Rhino. I cycled through that a few times with the same result. I off loaded Rhino 7 and re-loaded…Continue

Started by Kenneth W. Martin. Last reply by Arthur van der Harten May 28.

Mapping surfaces with Grasshopper 1 Reply

Hi Arthur, First of all, thanks for your previous answers,I was wondering if there was a way to calculate the Mapping Method and see the result directly in Grasshopper? I thought that there was maybe…Continue

Started by Sandrine Heroux. Last reply by Avraham Cohen May 27.

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Comment Wall

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Comment by Arthur van der Harten on November 15, 2022 at 7:19am: Hi kyujin,

For geometrical methods, no. That's what you get.

Other frequencies are possible with the numerical methods, though. Some of that functionally isn't released yet, but if you play with pach_numerictimedomain, you will see what I mean.

Arthur

Comment by Kyujin on November 15, 2022 at 3:34am: Hi, I was wondering if there's a way to adjust the scope of the octave band frequency. It is set as a default 0=62.5Hz, 7=8000Hz. Does the component allow input of higher/lower frequency? Also, would it be possible to plot 1/3 octave band with this plugin? Thanks in advance!

Kyujin

Comment by Arthur van der Harten on November 7, 2022 at 5:06am: Hi TC,
It depends on what you wanted to achieve. If you are simulating a sound system, then you really need to get the three source objects into the same impulse response. Come to think of it, that would be easier to do in the rhino interface, so I suggest you do your simulation there.

However, if that isn't the case, I wouldn't average but treat them as three separate results.

Arthur

Comment by TC.A on October 31, 2022 at 9:31pm: Hi, I'm trying to use pachyderm to study an existing space. How do I deal with sources when I have multiple points of sound source (ie multiple speakers within the room)? When I set multiple points in grasshopper, the node StatRec turns red. It does work when I tried graph the Pt node but I get separate results for each source point, should I flip the tree and average the results for each frequency? Thank you very much!

Comment by Kousai Tashani on October 31, 2022 at 4:29am: hello Arthur
İ sent you an Email please check your email or spam box.
thank you for your support :)

Comment by Arthur van der Harten on October 27, 2022 at 9:38am: Hi Kousai,
That's something about your model. It might happen in an extremely hard room, or a space where rays are getting stuck.
Can you send it to me?
info@orase.org
Arthur

Comment by Kousai Tashani on October 27, 2022 at 9:19am: hello Arthur,
its been ve exciting using the Pachyderm for a week now,
first of all thank you for developing the plugin.

I am facing a problem While using pachyderm through rhino.
in the hybrid mode window and after setting up all the settings I normally click "Calculate solution"
it takes action in the command line till i see " Preparing threads" and its stuck there. its not going anyfurther.

is there anyone facing the same issue and having a solution for that?

grasshopper is working fine so far i guess!!

thank you all

Comment by Arthur van der Harten on June 5, 2022 at 6:10pm: Robin,
The selected color scale works with the 'preview' option. If you use the buttons at the bottom of the form, it uses actual geometry, which does use the current layer.

Daniel,
Variegation allows you to select a characteristic dimension for the surface scattering or roughness. This might be the depth of relief, or have something to do with the size of flat portions. That dimension is the quarter wavelength of above which scatterering is very high, and below which it is very low.

Convergence - minimum convergence takes portions of the impulse response and determines how much it has changed at intervals. When the degree of change is below a certain threshold for 10 consecutive checks, then the simulation can be said to have converged sufficiently.

Let me know if you have questions.

Arthur

Comment by Daniel Horta on June 5, 2022 at 3:45pm: Furthermore, I would like some insights into how convergence works in Pachyderm. I'm familiarized with the concept of convergence from CFD simulations but it seems to work differently in Pachyderm. Besides that, what we can do to correct a model that doesn't seem to converge when put through "Detailed Convergence". Thank you!

Comment by Daniel Horta on June 5, 2022 at 3:32pm: Hi Arthur, hope everything is fine.

I was wondering if you could explain how we should use the "Variegation (characteristic dimension)" slider. I searched online but didn't manage to find anything about this specific term in articles about the use of scattering coefficients in simulations. Thanks in advance. Cheers!