so great, tjnak you! I had a similar idea to test sound absortion materials - but yours is even better. Also my challenge is to find a cheap & easy way to do it at home, rather than to build up a sophisticated Fraunhofer test environment. My goal is to determine which material absorps what frequency range how much. Cheers, Jochen
Thank you for this. Subscribed. Figuring out what material is best for sound absorption. Affordable... :) Green glue is overpriced. So I will use this/your method to test myself.
Yep ! Sound absorption concerns the reflected part of the sound, not the transmitted one trought the material. So this is a nice DIY test but for sound insulation.
The frequency output of that cheap 3 inch speaker tapers hard below 300 Hz, so it's not suitable for testing bass transmission. Most tests and data are poorly tooled for testing materials used in critical recording or listening environments such as recording studios. While just about anything sold as insulation will block/absorb frequencies above 1000 Hz, all the industry standardized tests seem to have been designed before the invention of subwoofers and don't test below 125Hz, which are the hardest frequencies to neutralize.
your video format could use some improvement, no hate. i love diy's. i think they should start with showing the end product and describing what each part is and what it does and how it does it before showing how to build it. that's the most informative way of describing a build, imo.
i get the idea of impedance tube, but i would like to know where u put the material??
so great, tjnak you! I had a similar idea to test sound absortion materials - but yours is even better. Also my challenge is to find a cheap & easy way to do it at home, rather than to build up a sophisticated Fraunhofer test environment. My goal is to determine which material absorps what frequency range how much. Cheers, Jochen
Thank you for this. Subscribed. Figuring out what material is best for sound absorption. Affordable... :) Green glue is overpriced. So I will use this/your method to test myself.
Isnt this test just for sound insulation and not really for sound absorption?
Yep ! Sound absorption concerns the reflected part of the sound, not the transmitted one trought the material.
So this is a nice DIY test but for sound insulation.
Is this for blocking sound or just adsorb the noise?Because the mic is installed behind the material you tested
The frequency output of that cheap 3 inch speaker tapers hard below 300 Hz, so it's not suitable for testing bass transmission. Most tests and data are poorly tooled for testing materials used in critical recording or listening environments such as recording studios. While just about anything sold as insulation will block/absorb frequencies above 1000 Hz, all the industry standardized tests seem to have been designed before the invention of subwoofers and don't test below 125Hz, which are the hardest frequencies to neutralize.
Gud knowledge sharing.. Thank you
your video format could use some improvement, no hate. i love diy's. i think they should start with showing the end product and describing what each part is and what it does and how it does it before showing how to build it. that's the most informative way of describing a build, imo.
what decibel meter app you used?
up
5:55 you dont show how to add layers to test. oy vey.
I don't understand where to put the testing material in as well. I think you remove the metal plate and add it there
what decibel meter app you used?