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Post by starandchlorisse on Jan 27, 2017 4:40:01 GMT
Is there an objective way to test a home made diffuser?
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Post by Hexspa on Jan 28, 2017 1:56:21 GMT
Something tells me an impulse response might be useful.
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Post by rock on Jan 28, 2017 15:11:11 GMT
I'm just spitballing here but try using REW or some other SW: Place a single speaker facing the diffusor and the mic in about the place say just above the speaker. If you have a spare absorber panel, use is as a gobo and position it horizontally between the speaker and the mic so the mic does not pickup the direct sound of the speaker. Set the sweep for the the bandwidth of the diffusor plus and octave or so on either side and see what you get. I'm not sure what graphs will give you the best results so look at all of them. So next, move the mic to the side some measured angle, reposition the gobo panel and sweep again and repeat for more angles. You might also consider using a uni-directional mic since you are interested in measuring what's bouncing off of the diffusor but again IDK. If you do, try both omni and a uni. Additionally, consider repeating measuring again at several distances between the speaker, mic and diffusor. Also, consider repeating the measurements on a bare wall as a control. This is really just a guess and I don't know what you'll get but it will sure keep you busy for a while  If you do take on this project, PLEASE share your findings with us! Thanks, Rock |
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