At least one French member has reported difficulty using FRD Consortium programs, (Subwoofer Simulator, Unibox, Vertical Polar Response and many other excellent programs) because of some glitch in non English versions of Excel.
http://www.pvconsultants.com/audio/frdgroup.htm
This is from the Unibox download site, (an FRD Consortium program):
http://www.danbbs.dk/~ko/ubmodel.htm
Quote the Unibox download page:
Operation with other versions of Excel
Excel 97
Many Excel 97 users reports that UniBox 3.00 for Excel 2000 works without any problems at all. Some have problems with a few features but usually this is cured when all Microsoft service releases are installed.
Users of the French version of Excel 97 have problems when opening UniBox, but Antoine Bonin found an easy work around. Go to the Windows regional parameter setting and select English instead of French. This has been verified by Christopher Pace with a good result too.
If this works with one FRD Consortium program, then there is an excellent chance it works with the others as well.
Anyone who uses a non-English version of Microsoft Office might wish to take this advice and post back to this thread on how well it works.
http://www.pvconsultants.com/audio/frdgroup.htm
This is from the Unibox download site, (an FRD Consortium program):
http://www.danbbs.dk/~ko/ubmodel.htm
Quote the Unibox download page:
Operation with other versions of Excel
Excel 97
Many Excel 97 users reports that UniBox 3.00 for Excel 2000 works without any problems at all. Some have problems with a few features but usually this is cured when all Microsoft service releases are installed.
Users of the French version of Excel 97 have problems when opening UniBox, but Antoine Bonin found an easy work around. Go to the Windows regional parameter setting and select English instead of French. This has been verified by Christopher Pace with a good result too.
If this works with one FRD Consortium program, then there is an excellent chance it works with the others as well.
Anyone who uses a non-English version of Microsoft Office might wish to take this advice and post back to this thread on how well it works.
Hi,
Just to clarify for those new to Subwoofer Simulator and Crossover Simulator, both programs are listed at the FRD Group site, and both are standalone, compiled, programs -- not Excel based
I'm pretty sure I've solved the problem with Windows Regional Settings, so even French Windows shouldn't report any runtime errors from either of my programs. Except, I think, for one thing only... The default series resistance, Rs = 0.0001ohms, in XoverSim defaults to using the full stop (.) as the decimal point regardless of Regional Settings. So users of European Windows need only replace the (.) with a comma (,) to avoid this one tiny hickup by yours truly. Rs is the only number I overlooked, all other floating point numbers automatically get converted from European to US style numbers.
New versions coming soon...
Cheers 🙂
Isaac
Just to clarify for those new to Subwoofer Simulator and Crossover Simulator, both programs are listed at the FRD Group site, and both are standalone, compiled, programs -- not Excel based
I'm pretty sure I've solved the problem with Windows Regional Settings, so even French Windows shouldn't report any runtime errors from either of my programs. Except, I think, for one thing only... The default series resistance, Rs = 0.0001ohms, in XoverSim defaults to using the full stop (.) as the decimal point regardless of Regional Settings. So users of European Windows need only replace the (.) with a comma (,) to avoid this one tiny hickup by yours truly. Rs is the only number I overlooked, all other floating point numbers automatically get converted from European to US style numbers.
New versions coming soon...
Cheers 🙂
Isaac
Oops, sorry Isaac. I knew that Subwoofer Simulator was not Excel based, but so many FRD Consortium programs are that I mistakenly included yours in the list.
I look forward to the new versions of Subwoofer Simulator and Crossover Simulator. 🙂
I look forward to the new versions of Subwoofer Simulator and Crossover Simulator. 🙂
yeah, espacialy Xover sim, becouse it is pritty buggie right now.
(i use other programs @ the moment, but when the bugs were gone it would be a nice sim program for evryone)
When i add my measured Frd's etc, en i go look at the spl they very ofthen are not displayed correctly. Sombody at another forum knew a solution that worked for him but sadly not for me.
(he entered 0 at the other impedance/spl files (the ones that werent used))
Hope jou fix this soon,
Greetz exision
(i use other programs @ the moment, but when the bugs were gone it would be a nice sim program for evryone)
When i add my measured Frd's etc, en i go look at the spl they very ofthen are not displayed correctly. Sombody at another forum knew a solution that worked for him but sadly not for me.
(he entered 0 at the other impedance/spl files (the ones that werent used))
Hope jou fix this soon,
Greetz exision
Exision,
Provided that your files are of the following FRD standard format, XoverSim will read, display and use them correctly.
For Acoustic Measurements:
Frequency SPL Phase
For Electrical Impedance Measurements:
Frequency Impedance Phase
Except for the second and third column, the first column (Frequency) of both files must be the same. But the frequency numbers of projects can be different from each other; that's OK. Each data point must be represented by three numbers. If even one set of data point has less than or greater than three numbers, everything will be wrong.
I take it he replaced phase information with 0. This should not be done -- garbage in, garbage out
Isaac
Provided that your files are of the following FRD standard format, XoverSim will read, display and use them correctly.
For Acoustic Measurements:
Frequency SPL Phase
For Electrical Impedance Measurements:
Frequency Impedance Phase
Except for the second and third column, the first column (Frequency) of both files must be the same. But the frequency numbers of projects can be different from each other; that's OK. Each data point must be represented by three numbers. If even one set of data point has less than or greater than three numbers, everything will be wrong.
I take it he replaced phase information with 0. This should not be done -- garbage in, garbage out
Isaac
I think Xoversim has a limitation that you need to use files with the same number, order and spacing for frequency points.
This is not a major limitation, but it would give weird results if the files had dramatically different frequency scales. You could probably make dummy data and/or do a simple interpolation to overcome this if your FRD files have different points. I think this is what you are alluding to with the zeroes...
------------------------------
Hey Isaac!
I've never used your program, but I've seen screenshots. Did you do Modified Nodal Analysis (w/ Element Stamps) and LU Decomp to solve the circuit? I am thinking about developing a simple spice type simulator for enclosure/crossover design.
Regards,
Ron
This is not a major limitation, but it would give weird results if the files had dramatically different frequency scales. You could probably make dummy data and/or do a simple interpolation to overcome this if your FRD files have different points. I think this is what you are alluding to with the zeroes...
------------------------------
Hey Isaac!
I've never used your program, but I've seen screenshots. Did you do Modified Nodal Analysis (w/ Element Stamps) and LU Decomp to solve the circuit? I am thinking about developing a simple spice type simulator for enclosure/crossover design.
Regards,
Ron
Hey there Ron!
I just used plain Nodal Analysis. I really wanted to implement Modified Nodal Analysis, but I can't seem to find a good reference for the method. The only material I had come across in the Internet was written in Chinese with some broken English. Calculation time is quite good enough as it is, but ultimately I'll try to implement MNA.
Any chance of getting an advanced copy when it's nearly finished? 🙂 Development of new versions is slow at the moment. Full time work takes up most of my time and I find that I'm beginning to forget some indepth technical stuff. I'm hoping I'd be able to afford my 2nd year studies next year 🙂
Cheers,
Isaac
I just used plain Nodal Analysis. I really wanted to implement Modified Nodal Analysis, but I can't seem to find a good reference for the method. The only material I had come across in the Internet was written in Chinese with some broken English. Calculation time is quite good enough as it is, but ultimately I'll try to implement MNA.
Any chance of getting an advanced copy when it's nearly finished? 🙂 Development of new versions is slow at the moment. Full time work takes up most of my time and I find that I'm beginning to forget some indepth technical stuff. I'm hoping I'd be able to afford my 2nd year studies next year 🙂
Cheers,
Isaac
Yes, i mean filling in dummy files.
i now see why it didnt work for me, ill try to change it. When in works ill get back on it...
Isaac,
There is a bit more out there now. Try another websearch with some of these terms:
circuit spice modified nodal analysis element stamps
Since you know C - there is a opensource spice simulator project out there called Gnucap. I downloaded the package but I won't look at it unless I really need to, cause I want the satisfaction of figuring it out myself - and since it is much more general than what I want to do, it would probaby just confuse me. I dont know C (yet).
you wrote xoversim as a first year student? Impressive! I didn't think of the "big circuit" approach until I was a senior.
If I get something kludged together, I'll let you try it out for sure. It might be a while. My interests are rather fleeting (Just ask Paul V) ;-)
There is a bit more out there now. Try another websearch with some of these terms:
circuit spice modified nodal analysis element stamps
Since you know C - there is a opensource spice simulator project out there called Gnucap. I downloaded the package but I won't look at it unless I really need to, cause I want the satisfaction of figuring it out myself - and since it is much more general than what I want to do, it would probaby just confuse me. I dont know C (yet).
you wrote xoversim as a first year student? Impressive! I didn't think of the "big circuit" approach until I was a senior.
If I get something kludged together, I'll let you try it out for sure. It might be a while. My interests are rather fleeting (Just ask Paul V) ;-)
Thanks for the kind words Ron. Yes I wrote XoverSim's engine having only 1st-year level knowledge, but not after a lots and lots of thought and imagination (not to mention debugging 
). But it was really cool once the big picture became aparent enough to be able to compile working code.
Thanks for the web search tips about MNA. I'll download and keep Gnucap, but for now it would sit beside my copy of the spice3f5 code, which is just way-way over my head (at the moment). I'd imagine Gnucap's code would confuse me just as much too. Likewise, I want the satisfaction of figuring it out myself. So many things to learn in so little time: signal processing, optimization, FEA...
Cheers,
Isaac
). But it was really cool once the big picture became aparent enough to be able to compile working code.Thanks for the web search tips about MNA. I'll download and keep Gnucap, but for now it would sit beside my copy of the spice3f5 code, which is just way-way over my head (at the moment). I'd imagine Gnucap's code would confuse me just as much too. Likewise, I want the satisfaction of figuring it out myself. So many things to learn in so little time: signal processing, optimization, FEA...
Cheers,
Isaac
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