Some questions on diffusing and absorbing sound...

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  • NoDestiny
    Member
    • Jan 2009
    • 97

    Some questions on diffusing and absorbing sound...

    Hey gang. I'm trying to understand the concepts as a general. I have some knowledge, but I'm looking for more.

    One of my biggest things I don't know (and I'm sure experience would help, but I want a good starting block on the universal knowledge first) is how to decide when to use something to diffuse the sound and when to use something to absorb it.

    Bass traps are a given that when trapping in corners, you absorb. But what about first reflections? Is it always best to absorb, or is there a general rule or a true science of any kind that states when one should use diffusion? I'm not sure what the rest are called (2nd, 3rd reflections?), but in general, how is it best to tackle those (or are those even a real concern?)

    I had another question, but typing all this made me forget it (I swear I'm A.D.D.)... ill post it later if I recall it.

    If any of this is going to be too difficult to explain in a post, I would definitely appreciate a good read (article, book, whatever!). No specific room or install, I just want to expand my general knowledge and understanding to become more of a "pro" audio enthusiast
    Last edited by NoDestiny; 18 December 2009, 16:44 Friday. Reason: fixing horrible grammar :D
  • 1oldguy
    Senior Member
    • Dec 2008
    • 459

    #2
    Could use help in this myself as well....Good Call.
    A Man should never Gamble more than he can stand to loose.

    Comment

    • NoDestiny
      Member
      • Jan 2009
      • 97

      #3
      Anybody?

      Comment

      • Ken49r
        Senior Member
        • Dec 2007
        • 312

        #4
        Originally posted by NoDestiny
        Bass traps are a given that when trapping in corners, you absorb. But what about first reflections? Is it always best to absorb, or is there a general rule or a true science of any kind that states when one should use diffusion?
        Absorb the front wall, 1st side, and ceiling reflections. Diffuse the rear wall. That's a general rule to start out with.
        You don't want to overdue either absorbstion or diffusion. You want to room to sound alive without echo.

        A buddy from work gave me a great book but I can't remember the authors name. I'll get back to you tomorrow when I ask him. I was going o buy myself a copy and forgot all about it. Glad you brought this up.

        Comment

        • wettou
          Ultra Senior Member
          • May 2006
          • 3389

          #5
          Originally posted by Ken49r
          A buddy from work gave me a great book but I can't remember the authors name. I'll get back to you tomorrow when I ask him. I was going o buy myself a copy and forgot all about it. Glad you brought this up.
          Did you get it!
          Farming looks mighty easy when your plow is a pencil, and you're a thousand miles from the corn field."Dwight D. Eisenhower

          Comment

          • David Meek
            Moderator Emeritus
            • Aug 2000
            • 8938

            #6
            Until Ken comes back with the book he's referring to, here's a link to a site started by our own ThomasW that is a good starting point. He and JonMarsh are the gurus from the HTGuide DIY Forum. Note especially section 9.
            .

            David - Trigger-happy HTGuide Admin

            Comment

            • Ken49r
              Senior Member
              • Dec 2007
              • 312

              #7
              Originally posted by wettou
              Did you get it!



              I only skipped through the chapters when I borrowed this from my friend and it's definitely on my buy list. Their are even a few reviews of the book on the site.
              Attached Files

              Comment

              • RobP
                Ultra Senior Member
                • Nov 2004
                • 4747

                #8
                I usually don't like to redirect to other sources for info, but this site really has some great information, yes..it is more geared towards recording studios, but what you can learn can be applied in your home.



                Also another great book to have is this one.

                Robert P. 8)

                AKA "Soundgravy"

                Comment

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