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Old 11th May 2009, 08:29 AM   #521
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Quote:
Originally posted by GM
According to the Belarc Advisor software it's a 2.40 gigahertz Intel Pentium 4 running Windows XP Professional Service Pack 2 (build 2600).

Quote:
Originally posted by GM
OK........... just got a 'runtime error 9', but without a 'statement' while moving back n' forth between several different TH sims.

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Originally posted by GM
Gotten it several more times without a 'statement', something doesn't like me using HR's FIND feature.............
Hi GM,

Thanks for the feedback - I was afraid something like this might happen! Looking on the bright side, I guess we at least now know some of the code that is NOT causing the error :-).

There are normally no problems using Hornresp with an Intel processor and Windows XP - I have the same platform myself.

In your case though, it appears that when a new record is added, and changes are made prior to opening the Find tool, for some reason the new record and the changes are not being recognised, which results in the array indexing error you keep seeing.

I will think some more about the problem, and see if I can possibly alter the record change detection logic somehow, to get around the issue.

Otherwise, you might just have to learn to live with it :-).

Kind regards,

David
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Old 11th May 2009, 01:29 PM   #522
GM is offline GM  United States
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Greets!

Yeah, I figured as much and it's not that big a deal compared to either having to overwrite (lose) an existing design or the hassle of having to use multiple HR/database folders, so thanks for a revision that apparently only benefits me, at least for now.

GM
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Old 12th May 2009, 05:38 AM   #523
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Hi GM,

Quote:
Originally posted by David McBean
I will think some more about the problem, and see if I can possibly alter the record change detection logic somehow, to get around the issue.
I have made one small change to the code - not sure if it will help at all. I have run now out of ideas :-).

Kind regards,

David
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Old 12th May 2009, 02:48 PM   #524
Jmmlc is offline Jmmlc  France
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Hello David,

Few months ago I used Hornresp to simulate a large planar loudspeaker called Infraplanar intended to be used as a sub. It is a nearly unbaffled loudspeaker having a very large rectangular membrane (area = 1 square meter).

http://infraplanar.free.fr/photos.htm

As we possess free field measurements of the Infraplanar , I could optimize in Hornresp the path length between the rear wave and the direct wave in order for the response curve to fit the measured one.(see attached file). The optimal pathlength was 96centimeters which is nearly the width of the loudspeaker.

I try to redo the simulation few days ago but it seems that you modified the max pathlength to be lesser than the length of the horn (here 0,01 centimeter long). An error message indicate to me that I cannot introduce a difference of path larger than 0.01centimeter which is the length of the simulated (flat) horn...

I know this was a very strange use of Hornresp but I considered it very convenient...

Best regards from Paris, France

Jean-Michel Le Cléac'h
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Old 13th May 2009, 06:48 AM   #525
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Quote:
Originally posted by Jmmlc
I try to redo the simulation few days ago but it seems that you modified the max pathlength to be lesser than the length of the horn (here 0,01 centimeter long). An error message indicate to me that I cannot introduce a difference of path larger than 0.01centimeter which is the length of the simulated (flat) horn...
Hi Jean-Michel,

The change was made back in February 2009 at the suggestion of Sabbelbacke - see my post #391 in this thread for details.

At the time it seemed like a good idea to both of us, as it appeared to provide a reasonable "sanity check" of the chosen path length difference value. As a result of your post though, I will remove the limitation and revert back to allowing a maximum value of 999,99 cm. I will let you know when this is done (hopefully by tomorrow).

It never ceases to amaze me how people keep finding new ways of using Hornresp :-). In the example you have given, the program’s prediction appears to be remarkably close to the measured results.

Many thanks for providing this feedback.

Kind regards,

David
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Old 13th May 2009, 07:13 AM   #526
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Hi Eva,

Quote:
Originally posted by David McBean
I think I will leave things just as they are for the time being, at least until Jean-Michel has had a chance to investigate the feasibility of un-wrapping phase.

Thanks to some brilliant work done by Jean-Michel over the weekend (and not simply on phase un-wrapping) I am now reasonably confident of eventually being able to display the overall system phase response and group delay in Hornresp in a useful format - as you have been requesting for some time now :-).

As an added bonus, Jean-Michel has also improved his impulse response method - making those results even better.

It will take some time for me to get everything working the way that I want it to, but I will let everyone know once it is done.

Kind regards,

David
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Old 13th May 2009, 01:40 PM   #527
tb46 is offline tb46  United States
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Default Post #526


Hi David,

That sounds like great news.

On the impulse response: is it possible to provide a choice for the time window display? On many of the tapped horns there is still a lot of activity after 40 msec.

Regards,
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Old 13th May 2009, 04:44 PM   #528
Eva is offline Eva  Spain
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Quote:
Originally posted by David McBean
Hi Eva,




Thanks to some brilliant work done by Jean-Michel over the weekend (and not simply on phase un-wrapping) I am now reasonably confident of eventually being able to display the overall system phase response and group delay in Hornresp in a useful format - as you have been requesting for some time now :-).

As an added bonus, Jean-Michel has also improved his impulse response method - making those results even better.

It will take some time for me to get everything working the way that I want it to, but I will let everyone know once it is done.

Kind regards,

David


(need to say more?)
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Old 14th May 2009, 03:10 AM   #529
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Quote:
Originally posted by David McBean
I will let you know when this is done (hopefully by tomorrow).
Hi Jean-Michel,

All fixed :-). Product Number 2150-090514 refers.

Kind regards,

David
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Old 14th May 2009, 03:13 AM   #530
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Default Re: Post #526

Quote:
Originally posted by tb46
On the impulse response: is it possible to provide a choice for the time window display?
Hi Oliver,

I'll think about it :-).

Kind regards,

David
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