R/E/P Community
R/E/P => Acoustics in Motion => Topic started by: audiothings on May 11, 2011, 11:42:57 PM
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Greetings to everyone and congratulations on the clean new look.
I had posted this question on a forum I use more frequently, but no answers forthcoming, I decided to peep in here.
A loudspeaker cabinet design software like (the free) WinISD lets you "tune" the cabinet, based on the following parameters: box volume, port shape and dimensions, number of ports, port length.
Can such a software be useful in the building of helmhotlz resonators?
Thank you.
Jai Shankar Iyer.
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Greetings to everyone and congratulations on the clean new look.
I had posted this question on a forum I use more frequently, but no answers forthcoming, I decided to peep in here.
A loudspeaker cabinet design software like (the free) WinISD lets you "tune" the cabinet, based on the following parameters: box volume, port shape and dimensions, number of ports, port length.
Can such a software be useful in the building of helmholtz resonators?
Thank you.
Jai Shankar Iyer.
Well, check the exact parameters, but I don't see why not.
There are a lot of little excel tools on the net that can do that too. I'll try and see which ones I have buried on my HDD.
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.....based on the following parameters: box volume, port shape and dimensions, number of ports, port length.........
... and loudspeaker driver that you use in simulated bass reflex cabinet, with its (simulated) electro-mehanical impedance, based on Thiele/Small parameters. :)
From my experience calculators for helmholtz resonator at http://www.mh-audio.nl/ACalculators.asp (http://www.mh-audio.nl/ACalculators.asp) works pretty well.
You can measure resonant frequency and Q factor of it (in your room) using method described here: " Measuring Helmholtz absorber resonant frequency in non-anechoic space." (http://repforums.prosoundweb.com/index.php/topic,1087.0.html)
Even with loudspeaker modeling software you must always measure/tune/tweak (manually) resonant frequency for bass reflex cabinet (at end, when you finish it)... so you can't have much benefits from it (loudspeaker modeling software).
regards
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Bogic,
That is a nice Helmholtz calculator... thanks for the link!!
FM
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There are other companies that make similar competing products, but I have not found one that I like better than the Mason castings and installation technique. We use this solution on most projects that can afford the materials and support a concrete slab as the basis for floating rooms.