Hornresp Update 5460-230306
Hi Everyone,
CHANGE
The Find Record, Horn Segment Wizard and Loudspeaker Configuration tools now operate correctly with the new CH2 and CH3 compound horn options.
BUG FIX
In some circumstances the S2S, S3S and S4S stepped segment throat area labels were not being shown correctly. This bug has now been fixed.
Kind regards,
David
Hi Everyone,
CHANGE
The Find Record, Horn Segment Wizard and Loudspeaker Configuration tools now operate correctly with the new CH2 and CH3 compound horn options.
BUG FIX
In some circumstances the S2S, S3S and S4S stepped segment throat area labels were not being shown correctly. This bug has now been fixed.
Kind regards,
David
Prof Mc Bean post in response to similar query recently https://www.diyaudio.com/community/threads/hornresp.119854/post-6844048
Patrick’s help me at the time too, but David has provided many additional features since then. Search on updates in this thread.
Patrick’s help me at the time too, but David has provided many additional features since then. Search on updates in this thread.
The link to the Hornresp User Manual post appears to have changed at some stage.
It is now https://www.diyaudio.com/community/threads/hornresp-manual.383370/#post-6949474
David / anyone, is there anymore information on this feature in addition to the help file? Would it be useful in determining minimum/optimum dimensions for a BLH using a full-range driver? In that case what corner frequencies should be investigated, the whole usable range or a smaller subset?
The System Design tools are based on the two "system synthesis procedures" described in the attached paper.
😵 Thanks David, it has been 50 or so years since I studied algebra at school, its tough going, but it looks like the paper has front loaded horns with rear chamber in mind, whether or not wider application is possible I'm not sure.
The Leach procedures are for front loaded horns only. But there are elements of it you can use. The reactance annulling part can obviously not be used as is, as it relies on a rear chamber, which you can't have in a back loaded horn. *)
What is more relevant, though, is the upper corner frequency, because that will determine the acoustic crossover between the horn and direct radiator. The specification here also influences the throat area, which determines the midband efficiency.
A few years ago I did some analysis of front loaded horns to extend the work of Leach, see attachment.
*) You could trick the procedure, though, since reactance annulling is based on equating the horn reactance to the total compliance (VAT = VAS * Vrc / (VAS + Vrc)). Since there is no Vrc in a BLT, you need to find a driver with VAS = VAT. You can trick the algorithm into calculating VAT by setting driver VAS to a very large value. The calculated Vrc will then be ~= VAT, and this will be the value for VAS you'll need for reactance annulling. It may be pretty hard to find a driver with the right VAS, though, and the suspension will soften after use etc, so this is basically an academic exercise.
Thanks Bjorn, while I hope to do better to understand the physics, for now at least I'll see if I can make use of Leach's work through Hornresp as you suggest. Congratulations on your blog and speaker projects which are inspired and inspiring.
Hello David
I hope you doing well,
I just want to give you a small feedback, because you were vary fast to introduce those new CH models but I couldn't use them for a while, unfortunately my work changes a little requiring more of my time and it's draining all my energy. As you know we do many things at our free time, I wish soon I can back more active again on DIY and take advantages of those new models.
Regards,
Marcelo
I hope you doing well,
I just want to give you a small feedback, because you were vary fast to introduce those new CH models but I couldn't use them for a while, unfortunately my work changes a little requiring more of my time and it's draining all my energy. As you know we do many things at our free time, I wish soon I can back more active again on DIY and take advantages of those new models.
Regards,
Marcelo
Thanks Marcelo, I had been wondering why you suddenly stopped posting. It's good to know that everything is okay.
Kind regards,
David
G'day David, others
This may have been asked before, but I couldn't find it. Is it possible to change the window size of Hornresponse? I've recently bought a new 17" LG Gram laptop and using Hornresponse is a real strain on these aging eyes. Being able to double the size in each direction would make it much easier to use.
Cheers
This may have been asked before, but I couldn't find it. Is it possible to change the window size of Hornresponse? I've recently bought a new 17" LG Gram laptop and using Hornresponse is a real strain on these aging eyes. Being able to double the size in each direction would make it much easier to use.
Cheers
Hi William,
Please see the post linked below for a way to perhaps get around the problem:
https://www.diyaudio.com/community/threads/hornresp.119854/page-604#post-6639314
Making it possible to change the form and text font sizes from within Hornresp itself is simply out of the question 🙂.
The following post also refers:
https://www.diyaudio.com/community/threads/hornresp.119854/page-584#post-6532347
Kind regards,
David
Thanks David
I'll do the scaling in the Win11 VM I run Hornresponse and some other audio SW in. Some of the other programs could also benefit.
On the LG Gram Hornresponse comes up just a little bigger than a credit card without scaling!
Cheers
William Cowan
I'll do the scaling in the Win11 VM I run Hornresponse and some other audio SW in. Some of the other programs could also benefit.
On the LG Gram Hornresponse comes up just a little bigger than a credit card without scaling!
Cheers
William Cowan
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Wow, that is small! A magnifying glass would be needed to see what is going on 🙂.
By my calculations I am guessing that the LG Gram must have a display resolution of 2560 x 1600 pixels or thereabouts - very nice indeed!
AI Generated Fake News?
I found the post linked below quite interesting. I somehow doubt that GPT-4 has the ability to download a copy of Hornresp, enter input values, calculate results and make sense of those results - but if indeed it does, then I think we are all doomed... 🙂.
https://www.diyaudio.com/community/...he-easy-way-ath4.338806/page-601#post-7303604
(I was surprised that GPT-4 would even be aware of Hornresp).
I found the post linked below quite interesting. I somehow doubt that GPT-4 has the ability to download a copy of Hornresp, enter input values, calculate results and make sense of those results - but if indeed it does, then I think we are all doomed... 🙂.
https://www.diyaudio.com/community/...he-easy-way-ath4.338806/page-601#post-7303604
(I was surprised that GPT-4 would even be aware of Hornresp).
It's obviously been taught by a politician, search the internet, make sh!t up, try to get away with it.. oh wait the AI admitted it was wrong / lying, can't have been a politician teacher..😂
It does. HR came up the same width and about 10mm taller than a credit card. 200% scaling on the VM works well!
Cheers 🍻