Speaking of Klangfilm...
Check out this Siemens compression drivers, definitely beautifully engineered pieces of audio hardware.
Check out this Siemens compression drivers, definitely beautifully engineered pieces of audio hardware.
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Amdismal,
when making surfaces out of point clouds with Meshlab, are you using the screened Poisson or the pivoted ball method (or another)? I have used both and the first one gives me a better surface except at the mouth (it is continued and it is not smooth at the end). The pivoted ball method gives me holes here and there or sagged mouth terminations. I am using the same point clouds as you (same spreadsheets).
I am starting with this and your hints will be highly appreciated.
BTW your macro would be interesting, I have been doing it manually with axissym. and elliptic spreadsheets.
when making surfaces out of point clouds with Meshlab, are you using the screened Poisson or the pivoted ball method (or another)? I have used both and the first one gives me a better surface except at the mouth (it is continued and it is not smooth at the end). The pivoted ball method gives me holes here and there or sagged mouth terminations. I am using the same point clouds as you (same spreadsheets).
I am starting with this and your hints will be highly appreciated.
BTW your macro would be interesting, I have been doing it manually with axissym. and elliptic spreadsheets.
Attachments
The point cloud settings are located at https://sphericalhorns.net/2019/10/04/meshing-point-clouds-for-drba-horns/ Are you using these settings ?
Thank you for your reply DonVK!
I had not seen that linked page, thank you for linking it.
I believe the problem is that the original Lecleach spreadsheet (which I am using) does not have enough points (the points are calculated every 5 degrees around the axis, while the points on the linked site are much closer spaced). Perhaps I will be able to modify it to generate more points, but there are quite a few of the calculations which I do not yet understand. I am mainly interested in the WE-elliptic variants. Have you by chance gone over the math of that spreadsheet?
I had not seen that linked page, thank you for linking it.
I believe the problem is that the original Lecleach spreadsheet (which I am using) does not have enough points (the points are calculated every 5 degrees around the axis, while the points on the linked site are much closer spaced). Perhaps I will be able to modify it to generate more points, but there are quite a few of the calculations which I do not yet understand. I am mainly interested in the WE-elliptic variants. Have you by chance gone over the math of that spreadsheet?
try to make the points an even distance apart. I found some manual mesh fixing was required using meshlab
I managed to increase the point cloud to a much higher density, now every 2.5 deg. around the axis instead of the 5 deg. of the original spreadsheet. Still, I have not much luck with Meshlab for normals and surface generation.
Is someone familiar with the elliptic spreadsheets? I am only able to extract points that run along the horns main axis, but the spreadsheets graphs have curves on perpendicular planes to the axis.
As an example two images, the first one form the spreadsheet's graphs and second being my point cloud (not really the same horn, but it illustrates the point).
Is someone familiar with the elliptic spreadsheets? I am only able to extract points that run along the horns main axis, but the spreadsheets graphs have curves on perpendicular planes to the axis.
As an example two images, the first one form the spreadsheet's graphs and second being my point cloud (not really the same horn, but it illustrates the point).
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Hi docali. I am using the spreadsheet named "WG-elliptique", which is the type that intrigues me the most. My initial plan is to be able to build meshes and run a few simulations with ABEC/Akabak and try to see how things vary with certain parameters (this specific spreadsheet has quite a few extra parameters: "distance aplatissement", "rapport forme embochure", and "moyenne" and "ecart type", the last two which feed a statistical function). Perhaps later I will move to on to print one.
Here is a link to download the point cloud (the file exceeds the max. size allowed here) Link
I have thought of reducing the number of points associated to each angle, perhaps if the points are a little more evenly spaced, as kipman725 suggested, Meshlab could do a better job. I have not had the time today, I"ll try that later on.
Here is a link to download the point cloud (the file exceeds the max. size allowed here) Link
I have thought of reducing the number of points associated to each angle, perhaps if the points are a little more evenly spaced, as kipman725 suggested, Meshlab could do a better job. I have not had the time today, I"ll try that later on.
ok, it seems that you are NOT using my spreadsheets. In this case I cannot support you. Only thing to mention is that you have way too much points.
I would like to proudly announce that I have found a contact who will manufacture horns from my authorized prototypes' category:
https://sphericalhorns.net/2024/01/...s-new-contact-for-drba-authorized-prototypes/
There is already a pair for me in the making... using 12 years stored mahogany...
🙂
https://sphericalhorns.net/2024/01/...s-new-contact-for-drba-authorized-prototypes/
There is already a pair for me in the making... using 12 years stored mahogany...
🙂
Some impressions of the new wn300se made by LMH:
👄😍
👄😍
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Hello, I would like to ask for help, I downloaded the calculator JMLC inspired calculator from your site and entered the data I needed, but it does not create a txt file for meshlab
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Have you confirmed the message box to export? Otherwise send me a private message with Excel in zip attached.
I succeeded. Thank you very much for creating such a calculator. What does this parameter affect? Super Ellipse Transition
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