Hello everyone, I come here today to try to resolve a question that I have had for a long time, and I can't find the answer anywhere.
The question is, if there is any type of software that can represent the frequency response of a speaker, but theoretically, but not only that, because if we talk about that, we find software like WinISD, which is quite good, but I I mean, go a little further.... What I say is, a software that one can enter a 3D model of an acoustic box, and then the parameters of the woofer or woofers, and other things to add, and that the software I'll tell you what frequency response that speaker should have with that woofer in practice.
Perhaps inserting a 3D model, and having it calculated is a bit far-fetched, but perhaps one that gives more options for box types, such as for 6th order bandpass variants, or 5th order, or even 8th order.
At least I started to have this doubt because of the very interesting videos of HexiBass and its crazy designs. And also from a section of Loudspeaker Design CookBook, where it shows the different frequency responses of different speakers, but not because of their volume, or if they are bass reflex, or bandpass, no, but only because of their shape.
Some being spherical, others oval, others cubic, parallelepipeds, cylinders, etc. And by simply changing the shape, I could obtain responses of completely different frequencies, which is why it caught my attention. If anyone knows about the subject, I would greatly appreciate it if you would comment on this thread, and help me, and many who surely have this same question.
The question is, if there is any type of software that can represent the frequency response of a speaker, but theoretically, but not only that, because if we talk about that, we find software like WinISD, which is quite good, but I I mean, go a little further.... What I say is, a software that one can enter a 3D model of an acoustic box, and then the parameters of the woofer or woofers, and other things to add, and that the software I'll tell you what frequency response that speaker should have with that woofer in practice.
Perhaps inserting a 3D model, and having it calculated is a bit far-fetched, but perhaps one that gives more options for box types, such as for 6th order bandpass variants, or 5th order, or even 8th order.
At least I started to have this doubt because of the very interesting videos of HexiBass and its crazy designs. And also from a section of Loudspeaker Design CookBook, where it shows the different frequency responses of different speakers, but not because of their volume, or if they are bass reflex, or bandpass, no, but only because of their shape.
Some being spherical, others oval, others cubic, parallelepipeds, cylinders, etc. And by simply changing the shape, I could obtain responses of completely different frequencies, which is why it caught my attention. If anyone knows about the subject, I would greatly appreciate it if you would comment on this thread, and help me, and many who surely have this same question.
That guy has shown up before. IMO his speaker designsshouldnot work very well.
If such SW exixts now it is likely BIG buck stuff like COSMOL.
dave
Thanks for the photo!That guy has shown up before. IMO his speaker designsshouldnot work very well.
If such SW exixts now it is likely BIG buck stuff like COSMOL.
dave
I understand. But equally, isn't there any software that allows you more freedom when calculating a speaker? Or would you say the best in this field is WinISD?
interesting, thanks for your comments about HixeBass, now I will watch your videos more skeptical
What do you think of the youtubers "Audio Judgment", and "DIYaudio guy"? Are good?
Hi,
hornresp can do all kinds of boxes. If you need more elaborate then some BEM simulation might be what you want, like AKABAK.
hornresp can do all kinds of boxes. If you need more elaborate then some BEM simulation might be what you want, like AKABAK.
No, it's very basic compared to Hornresp (what I use) and AKABAK a leap to the point I long ago gave up trying to 'grok' it.
I have no videos, I'm strictly a 'talking head'. Yes, be very skeptical as IMNSHO your time is much better spent being an active member/researching this site and some others if interested in vintage or high efficiency, etc..
No clue, my life is too short to vet* them and learned the hard way when I got on-line in '96 to actively be involved in my various hobbies over the decades and finding so much misinformation made by well known 'names' in consumer audio in particular and some BBs giving me huge (verbal) abuse then banning me; computer hacked several times, loading it with child, bestiality porn (M*Af*e basically worthless) or just crashing it to the point where in some cases it had to be rebuilt from scratch. Fortunately I knew an IBM computer guru that ultimately destroyed them with some going to jail in countries that I almost felt sorry for them.
*verb (used with object)
*vet·ted, vet·ting. to appraise, verify, or check for accuracy, authenticity, suitability, etc.: An expert vetted the manuscript before publication.
Very commonly used, but more bottom of the barrel. There are more than a few sealed/reflex modelers like that. They predict the affect of the box on the LF output. Does not acount for the actual driver response.
For more complete LF modeling there is little, Martin King’s software is NLA, the freeware TL modeler (on this forum) is clunky to install, SpcyTL (https://www.diyaudio.com/community/threads/spicytl-transmission-line-simulation-model.365782/), but the most commonly used is hornRESP (https://www.diyaudio.com/community/threads/hornresp.119854/). There are script based modelers like Akabak as well.
XO modelers can take the driver’s response and add an XOand estimate the system response, notsure where thye get their LF information.
dave
Note: the typicaly tall-thin towers are Mass Loaed Transmission Lines.
I use SpeakerBoxLite.com. you can model your box shape with that, and the effects on low frequency.
I have used SpeakerboxLite.com for 2 (vastly different) BR designs. Unfortunately I have not been able to measure the output. But they definitely sound "as you would expect" from the simulated output.
I have a question about the frequency response image. Do these designs only affect when it is in sealed boxes, or in any type of box?That guy has shown up before. IMO his speaker designsshouldnot work very well.
If such SW exixts now it is likely BIG buck stuff like COSMOL.
dave
Doesn’t really matter, but i expect Olson used sealed. The purpose of the experiemnt is to show the ffect of the box shape on the 2∏ to 4∏ transition.
dave
dave
So if I make an acoustic box in the shape of a parallelepiped with a truncated pyramid, but bass reflex, it would give me a better frequency response than a common parallelepiped, wouldn't it?
Another related question about Hornresp. And is it possible to calculate the response of an acoustic box with any of these specific shapes? Or to do that should I use akabak, or some similar software?
No,it's all cylindrical and no experience with others, though I recall the advanced folks were using AKABAK when I got online in '96.
Try ChatGPT once. Not sure accurate it would be tho. Might be worth a try. I think the new version can have pictures uploaded, so that feature might be helpful.