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Multi-Way Conventional loudspeakers with crossovers

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Old 4th February 2007, 11:45 AM   #31
ente is offline ente  Germany
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Wink ARTA 1.2

.... with some delay

Tomorrow release 1.2 should be ready for download.
Pls check Ivo's homepage.

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Most of the new features are already presented in my Xmas announcement but there are some more.

Regards
Heinrich

PS: Some of the new functions will work only if you have a licenced version
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Old 4th February 2007, 02:25 PM   #32
ente is offline ente  Germany
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Default ARTA 1.2

.. from now on it's monday

Have a look on Ivo's homepage. Release 1.2 is ready for download:

http://www.fesb.hr/~mateljan/arta/download.htm

Furthermore one supporting paper (sorry just in german language but with a lot of pictures) dealing with the building of a turntable for polar measurements:

http://www.fesb.hr/~mateljan/arta/Ap...r-Rev01Ger.pdf

Heinrich
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Old 21st February 2007, 12:15 PM   #33
Antonix is offline Antonix  Italy
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I have installed ARTA 1.2 and I have tried to measure the frequency response of my loudspeaker.

I have read the manual and make all calibrations but when I measure the frequency response I have very high ripple at high frequency.

I have a Steinberg mi4 professional usb sound card.

Where am I wrong ?
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Old 21st February 2007, 01:10 PM   #34
Svein_B is offline Svein_B  Norway
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Quote:
Originally posted by Antonix
I have read the manual and make all calibrations but when I measure the frequency response I have very high ripple at high frequency.

Where am I wrong ?
I suspect that you may be using the FR1 plot. This displays the spectrum in real-time, but I do not think it is suitable for normal measurement.

I use the IMP plot, and select the Smoothed FR window.
Sine sweep seem to give the most predictable results, especially at the frequency extremes.

These are just my unqualified observations - corrections are welcome.


SveinB
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Old 21st February 2007, 07:51 PM   #35
ente is offline ente  Germany
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Hi Antonix

... did you switch off the "direct input monitoring"?

Regards
Heinrich
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Old 21st February 2007, 08:04 PM   #36
Antonix is offline Antonix  Italy
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Quote:
Originally posted by ente
Hi Antonix

... did you switch off the "direct input monitoring"?


Yes of course.

Now I have tried to make another method of measure.
I have measured the impulse response and then FR Smooth tranformation.
I think that this is better than RTA analisis and I have no ripple to any frequency.
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Old 4th March 2007, 02:02 PM   #37
ente is offline ente  Germany
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Default ARTA 1.2.1

..... release 1.2.1 is ready for download.

http://www.fesb.hr/~mateljan/arta/download.htm

Heinrich
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Old 15th June 2007, 03:47 PM   #38
ente is offline ente  Germany
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Default ARTA 1.3

... upcoming new release of ARTA and STEPS.

New features in ARTA:

- measurement of distortion with Farina - method (very fast)
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- pioriod based waterfall (Burst Decay) (detection of resonances)
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New features in STEPS:

- power or voltage based measurements
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Power amp at different frequencies and voltage levels

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Woofer @ fs for different voltage levels

If all the final tests will be without bugs the release will be published end of june.

Regards
Heinrich
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Old 15th June 2007, 04:51 PM   #39
owdi is offline owdi  United States
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pioriod based waterfall++ :-)
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Old 18th June 2007, 06:42 PM   #40
hooha is offline hooha  Canada
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This package keeps getting better and better...

Way to go Ivo!
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