Super Soundproofing Community Forum

Soundproofing Forum Topics => Acoustical Questions? Ask here about Sound absorbsion, Reflection, ETC => Topic started by: me2u on October 24, 2009, 10:28:31 PM

Title: Shouldn't we know what materials are best for what frequency?
Post by: me2u on October 24, 2009, 10:28:31 PM
I phone up Home Depot and ask a simple question:  Are any of their soundproofing materials rated for any particular frequencies? Because common sense tells us that nothing is good at all frequencies and with every substance there were will be a frequency where it performs best at.  Once you know the frequencies that are the problem you should be able to shop for the best matched materials for the job.  But to my surprise the Home Depot guy said there were no ratings on any of the products he could see.  Some of us need to isolate bass, some much higher frequencies.  You have to know where your soundproofing material performs best at.  My question here is how do I find this out? 
Title: Re: Shouldn't we know what materials are best for what frequency?
Post by: Randy S on October 26, 2009, 06:34:21 PM
Any Material that has a STC rating, the sound transmission loss values are tabulated at the eighteen standard fequencies.
In order to find the information you are looking for, you will need the materials ASTM standard E90-04 lab test results.
Also keep in mind that when dealing with low frequencies you will need to decouple from the structure no matter what materials you use in the walls.