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Frequency-dependent sound absorption
Posted: Wed Sep 02, 2015 10:27 am
by deleted-297327
Hello.
Do you know where I can get acoustic materials to Finland? Most online shops don't have shipping to Finland or materials are too big or expensive.
Re: Frequency-dependent sound absorption
Posted: Wed Sep 02, 2015 10:48 pm
by theborg
ossikankainen,
Welcome to the forum and thank you for your question. What is it you are trying to do? Are you soundproofing a room or are you conducting an experiment with different sound absorbing material? It may be that you can use material available in your area (and affordable) and conduct an experiment to determine which materials and configuration provides the best sound absorbing results.
A bit more detail on your project would help us provide advice.
Re: Frequency-dependent sound absorption
Posted: Thu Sep 03, 2015 1:29 pm
by bfinio
Hi ossikankainen,
I assume you are referring to this project?
https://www.sciencebuddies.org/science- ... p029.shtml
I've never been to Finland so I'm not familiar with physical or online stores there. Can you get items shipped from Amazon.com at a reasonable cost? Just to take one example from the materials list, it looks like they have acoustic foam:
http://www.amazon.com/s/ref=nb_sb_noss_ ... ustic+foam
In the US, you could also probably get a lot of this stuff at a hardware store. We have Lowe's and Home Depot here, not sure what you have in Finland.
Hope that helps,
Ben
Re: Frequency-dependent sound absorption
Posted: Sat Sep 05, 2015 10:30 pm
by deleted-297327
Hi
I'm doing that project what bfinio linked down. So I'm testing little pieces of different materials and getting experience about them.
There's not so much physical stores here in Finland, but I think that I can order them from Amazon and from german music online shop Thomann.
Thanks for your help theborg and bfinio
Ossi
Re: Frequency-dependent sound absorption
Posted: Mon Sep 07, 2015 6:02 pm
by bfinio
Hi Ossi,
If you have trouble getting materials, you could also try just using materials you can find around the house. You could try things like a wooden table or a thick blanket, and you'd still be able to do the experiment just fine. The point of the experiment isn't really to test the EXACT materials listed in the material list, it's to see how sound absorption can change with frequency. That might make things easier if you have trouble finding stuff at a store.
Hope that helps,
Ben