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Old 17th June 2019, 06:44 AM   #61
mabat is offline mabat  Czech Republic
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Originally Posted by carlthess40 View Post
Are you making any of these horns? If so do you need any gene pigs for testing?
I want to make some for myself but I'm still exploring possibilities. That's also why I released the tool - I hoped to see more BEM results.
It's actually hard to decide. Too many look promising
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Old 17th June 2019, 06:55 AM   #62
mabat is offline mabat  Czech Republic
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In my view, such a tool is particularly good for making studies where you change some parameter(s) just to see the trends. By now it's obvious to me that the mouth termination is of paramount importance. The shape of cross-section may help a bit and it really seems that with a rectangular variety the beamwith control is somewhat more stable at the lower end. That is what I found so far.
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Last edited by mabat; 17th June 2019 at 07:01 AM.
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Old 17th June 2019, 08:58 AM   #63
TimbreAudio is offline TimbreAudio  United Kingdom
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Good work!
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Old 17th June 2019, 01:18 PM   #64
mabat is offline mabat  Czech Republic
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Thanks.

Regarding actual making of the horns -
I'm still wondering what would happen if the horn would be just assembled (glued together) from many thin slices so it would make a stairwise surface. I would have a concern about one or two such discontinuities but what if there are tens of them? Has anyone ever tried to see what would happen?
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Old 17th June 2019, 01:51 PM   #65
nc535 is offline nc535
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Make the layers out of a soft wood and it shouldn't be a problem to fill and sand the discontinuities smooth.
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Old 17th June 2019, 02:24 PM   #66
mabat is offline mabat  Czech Republic
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Oh I would not like to do that. Just wondered what influence would it have on performace of the horn. I have no idea, really. Just in case it would be usable, I would then leave it discontinuous as it would be very easy.

I could maybe simulate that. At least give it a try.
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Old 18th June 2019, 08:46 PM   #67
mabat is offline mabat  Czech Republic
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Not really a good idea I guess -
Attached Images
File Type: png 9kHz_far.png (299.1 KB, 662 views)
File Type: png 9kHz.png (290.5 KB, 662 views)
File Type: png raw_steps.png (8.2 KB, 688 views)
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Old 19th June 2019, 08:30 PM   #68
mabat is offline mabat  Czech Republic
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I'm working on superformula for shape definition. Not sure about the merit but anyway...
It's just a different equation.
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File Type: jpg sf2.JPG (30.0 KB, 628 views)
File Type: jpg sf3.JPG (31.2 KB, 93 views)
File Type: jpg sf4.JPG (32.5 KB, 117 views)
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Last edited by mabat; 19th June 2019 at 08:40 PM.
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Old 19th June 2019, 09:37 PM   #69
daemonsgr is offline daemonsgr  United Kingdom
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Originally Posted by mabat View Post
I'm working on superformula for shape definition. Not sure about the merit but anyway...
It's just a different equation.
you re an computational artist for sure
(not sure about the acoustics of this though)

when I get some free time from work I want to prototype one of the ones you posted. I have access to a super cool prototyping workshop at work.
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Old 19th June 2019, 09:52 PM   #70
jzagaja is offline jzagaja  Poland
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Star shaped would be interesting for.... Manger transducer with star shaped phase plug
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