Pachyderm Acoustic

192 members

Description

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

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Very cool, but Error "Index was outside the bounds of the array."

by Brenda EM

Nov 18, 2022

Hi,

I am intrigued by Pachyderm. Thanks for creating and sharing it.

Oddly, I am experimenting with not a room but a portable semi-transmission-line speaker enclosure. I want to see what's going on in it.

The Pachyderm case is pretty much a boilerplate tutorial thing, largely copied from Gediminas Kirdeikis's excellent videos.
: https://www.youtube.com/watch?v=t9t5jnw6XTk

I made truncated copy of the speaker cone, and divided it, evaluating the surface and creating vectors and normals to run the simulation. The surface is offset the speaker cone so that there's nothing co-planar.

It does solve, but it works with only about 100 sound sources. I wish I could see the wavefront a little better. Increasing the bounces makes it go wrong, as well, with the following error.
"1. Solution exception:Index was outside the bounds of the array."

Also, I tried adjusting the voxel grid depth. Set to on zero, it doesn't run. Other values don't seem to help the problem.

Is there is anything I could set to get more rays or bounces without throwing an exception?

I've added blurry Cloud objects, and set the gradient transparency, but what other kind of visualization should I be doing for the most fun--err, um most helpful data assessment for further consideration?

Thank you.
--BrendaEM

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  • up

    Brenda EM

    Thank you for the reply, I will experiment with different pachyderm modes.

    Though, I apparently also am not allowed very many sound sources. What I hoped to do, was offset the cone from the speaker cone, and use that subdivided reference object for creating equally distributed normals.

    Respectfully, I feel that the tutorial's creator was trying to help people.

    1

    Nov 19, 2022

    • up

      Michael Dubby

      The error Index was outside the bounds of the array typically appears in programming when trying to access a position in an array that doesn’t exist. This can break automation scripts, especially during 블로그 스크랩 작업 where loops and array manipulations are frequent. The mistake often stems from incorrect loop limits or unexpected data lengths. Developers should double-check array sizes before access and use bounds-checking logic. Catching this early can prevent script crashes and save debugging time in repetitive web data tasks.

      Jul 1

      • up

        Michael Dubby

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