Super Soundproofing Community Forum

Soundproofing Forum Topics => Acoustical Questions? Ask here about Sound absorbsion, Reflection, ETC => Topic started by: soundcala on September 07, 2018, 01:31:33 AM

Title: very very general question about sound proofing
Post by: soundcala on September 07, 2018, 01:31:33 AM
I am considering trying to build a "semi sound proof" space.  Rather then go into exact details, I'd like to ask a VERY general question regarding sound proofing.   

If I wish to build a barrier, say for example, a wall, to split a room in half and block sound from traveling from one side to the other, what would be the impact of a small gap in such a barrier ?  For example, a 10 foot wall that goes from the floor to 1 inch from the ceiling ?

Is the physics of sound such that any such gap would make the reduction in sound from such a wall only 5%, when the full floor to ceiling wall might reduce the sound 90 % ?

I understand my terminology may not be proper, and my question very vague.
Title: Re: very very general question about sound proofing
Post by: Randy S on September 07, 2018, 03:10:26 PM
To keep the answer basic, if you had a 2% leak you could lose up to 60% of the potential performance of the assembly..

To give you a bit more detail, the end result of having said leak would depend on the intensity of the noise source your trying to block. So the quieter the source is the leak might be so bad but when you get into higher decibel levels it would be quite obvious the assembly is not working.

look at like driving a car down the freeway with the windows rolled up, you have some value of sound control / reduction. just reach over and crack the window an 1/8" and see what happens.

Hope this helped

Randy S.