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Klippel Near Field Scanner on a Shoestring
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Old 6th August 2018, 06:13 PM   #461
mwmkravchenko is offline mwmkravchenko  Canada
Mark Kravchenko
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Klippel Near Field Scanner on a Shoestring
Success with using the EXE and the find first peak tip.
I imported the text files and it seems to work as designed.

I'm chalking it up to being a bit of an idiot as to how your windowing works. With the simple instruction to use find first peak I get everything to work perfectly in either the Installer version or the EXE version.

My supposition was that I had to provide a windowed file in the first place and that it would be enough for the application to use that file. Hence I did find the first and last peaks in the impulse files and saved them as a clipped file.

Now I have to try and figure out what each of the tabbed screens is actually telling me!

Perhaps a bit of a README kind of file would be in order?
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Old 7th August 2018, 07:01 AM   #462
3ll3d00d is offline 3ll3d00d  United Kingdom
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glad you got it working, did you try wavs as well?

re the graphs, the tabs prefixed measured are basically graphs of the input data, i.e. your measurements with the selected window applied, while the tabs prefixed "modal" are the results of pushing that data through Earl's routines so best to refer to his commentary earlier in the thread on what that means.
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Old 7th August 2018, 02:11 PM   #463
mwmkravchenko is offline mwmkravchenko  Canada
Mark Kravchenko
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Quote:
Originally Posted by 3ll3d00d View Post
glad you got it working, did you try wavs as well?

re the graphs, the tabs prefixed measured are basically graphs of the input data, i.e. your measurements with the selected window applied, while the tabs prefixed "modal" are the results of pushing that data through Earl's routines so best to refer to his commentary earlier in the thread on what that means.
Yes I can get both the wave file to work as well as the text version of the wave file to work when I properly truncate the length of the impulse response within the Pypolar application.

That little bit of information is the key to getting this to work properly.

As for graphs and what they explain.
I'm not new to this game. But I have to admit that I have not liked soem of the graph types that are presented. So that means that I have to get to know them a little better and determine how they work. I'm very familiar with the conventional X,Y graph and the Polar graphs. Second nature to me. The Impulse makes lots of sense. I can understand the measured polar quite easily. Like the measured - multi grapoh as it is quite intuive with mousing over the multi-coloured graph gives you a great idea of what is going on in the polar plot and the conventional Amplitude versus frequency plot.

Modal - Multi is where I will get the hang of how the multi-coloured plot works. This inclusion in the application is where I can do some learning.

Thanks for your hard work Matt.

Thanks to Earl for releasing his DLL for the raw calculations.

Now I have to get my head around making up the test rig. I'll study the ideas carefully and see what I can whip up.
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Old 8th August 2018, 06:33 AM   #464
orjan is offline orjan  Sweden
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Hi,

On win10, installed the setup exe. Used Marks IQ5 txt data, find peak, apply window. Seems to work well. Now I have to get Holmimpulse up to be able and get more data.

Perhaps a thread where measurements could be sent to be shared and discussed?

Thanks to Earl and Mark for doing this.

The book Fourier Acoustics can be found at safaribooksonline, at least when I started they had a free first month.

/örjan
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Old 8th August 2018, 08:43 AM   #465
orjan is offline orjan  Sweden
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Hi again,

Was a bit fast last time, thanks should be to Matt too.

/örjan
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Old 8th August 2018, 01:43 PM   #466
mwmkravchenko is offline mwmkravchenko  Canada
Mark Kravchenko
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Klippel Near Field Scanner on a Shoestring
Quote:
Originally Posted by orjan View Post
Hi,

On win10, installed the setup exe. Used Marks IQ5 txt data, find peak, apply window. Seems to work well. Now I have to get Holmimpulse up to be able and get more data.

Perhaps a thread where measurements could be sent to be shared and discussed?

Thanks to Earl and Mark for doing this.

The book Fourier Acoustics can be found at safaribooksonline, at least when I started they had a free first month.

/örjan
I really I really didn't do much at all. I just manipulated some files that were posted already. But I appreciate your thank you.
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