MatthewDougherty
New Member
Has anyone used REW to calculate sound coefficients for walls?
Generally, acoustical theory puts sound into three categories when striking a surface: reflection, absorption and transmission.
When analyzing an empty room, REW will tell you a lot about the reflectivity of the room, but nothing directly about absorption and transmission..
If free standing acoustical panels in the room are used, transmission is still energy in the room, absorption is the only mechanism removing sound energy from the room.
In the case of walls, absorption and transmission are energies leaving the room. I am ignoring ambient sound outside the room entering the room through the walls.
It seems like one could devise a test using REW similar to this youtube video, to get some reasonable coefficients by placing a reference mic outside the room in proximity to a speaker focused closely to the wall, as in the video.
Generally, acoustical theory puts sound into three categories when striking a surface: reflection, absorption and transmission.
When analyzing an empty room, REW will tell you a lot about the reflectivity of the room, but nothing directly about absorption and transmission..
If free standing acoustical panels in the room are used, transmission is still energy in the room, absorption is the only mechanism removing sound energy from the room.
In the case of walls, absorption and transmission are energies leaving the room. I am ignoring ambient sound outside the room entering the room through the walls.
It seems like one could devise a test using REW similar to this youtube video, to get some reasonable coefficients by placing a reference mic outside the room in proximity to a speaker focused closely to the wall, as in the video.