DIY measure Absorption Coefficient? - Home Theater Forum and Systems - HomeTheaterShack.com

Old 02-27-09, 02:46 PM Thread Starter
Shackster
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DIY measure Absorption Coefficient?

Excuse me.
I just wonder, is there some way measure Absorption Coefficient of DIY bass trap?
zephyrwinter is offline

Old 02-27-09, 05:10 PM
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Re: DIY measure Absorption Coefficient?

Don't know about all that, but if you take response readings both before and after the trap's installed, you can tell from the waterfall display if it's helped or not.

Regards,
Wayne

Wayne A. Pflughaupt is online now
Old 02-27-09, 07:50 PM Thread Starter
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Re: DIY measure Absorption Coefficient?

Quote:
Wayne A. Pflughaupt wrote: View Post

Don't know about all that, but if you take response readings both before and after the trap's installed, you can tell from the waterfall display if it's helped or not
Then how to convert different dB to Absorption Coefficient?
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Old 02-28-09, 11:52 PM
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Anechoic

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Re: DIY measure Absorption Coefficient?

Quote:
zephyrwinter wrote: View Post
Then how to convert different dB to Absorption Coefficient?
If you measure the RT60 time of the room before and after you install the bass trap, you can use the Sabine equation to calculate the absorption coefficients of the bass trap. I'd suggest doing it an a completely empty room to simplify the calculations.
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Old 09-18-09, 11:21 PM
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kostix

Join Date: Sep 2009
Location: Mexico
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Re: DIY measure Absorption Coefficient?

Hello!

You could also setup a "pseudo" anechoic chamber using as many absorbers as you could to create a sort of a box, and do the testing inside of that - place there the speaker, your desired panel to be tested and the mic.

Best regards.
Konstantin
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