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Thread: diy sound diffusers made with plastic water bottles, would it work?

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    diy sound diffusers made with plastic water bottles, would it work?

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    Been thinking about sound diffusers and have made some of the roxul 3" thick sound panels before and they work good.
    had an idea to use plastic water bottles kinda like an egg crate look and wonder if anyone has used bottles for diffusion before?

    i did some searching and found nothing online but wonder if it would work.
    ill post a pic of the pattern i was thinking of in a few
    cutting the bottles in half so theres a cup and a top. maybe if these were put on a piece of wood and then covered in burlap to hide the look make work may not any thoughts?
    Attached Thumbnails Attached Thumbnails 007-jpg   008-jpg  
    Last edited by customdrum; 09-25-2014 at 09:01.

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    007-jpg008-jpg

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    I'm definitely no expert, but I think most diffusors are made with some mathematical proportions when it comes to how they are designed.

    Check this out: PME Records QRD Diffusor Construction

    For more in-depth analysis: http://downloads.bbc.co.uk/rd/pubs/reports/1990-15.pdf
    When the world slips you a jeffrey, stroke the furry wall.

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    Quote Originally Posted by dainbramage View Post
    I'm definitely no expert, but I think most diffusors are made with some mathematical proportions when it comes to how they are designed.

    Check this out: PME Records QRD Diffusor Construction

    yeah i know most are mathmatically made to work the best for sure, got this idea from the wooden scrap diffusors i see and egg crates , since im just looking for something to kill the highs and not worried about corners or low end just high end noise on flat walls and the foam stuff is kinda expensive and esp auralex foam squares or foam by mail

    thought of making those wooden scrap diffusors since i can get scrap wood free and not have to buy any 2x4 or anything but there really heavy and would cost more than the plastic bottles for sure and plastic is much lighter.

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    Diffusors do not absorb high frequencies - they are reflected in mathematically-random ways so that the waves are diffused.
    Mike B My new album on CD Baby: Fact and Fiction
    My Bandcamp site: http://mikebirchmusic.bandcamp.com

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    Quote Originally Posted by customdrum View Post
    im just looking for something to kill the highs and not worried about corners or low end just high end noise on flat wall
    What exactly is it that you're recording? A castrato choir?
    When the world slips you a jeffrey, stroke the furry wall.

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    Quote Originally Posted by dainbramage View Post
    What exactly is it that you're recording? A castrato choir?
    lol yeah a barber shop quartet of coarse

    i have bass traps in corners and 3" panels on the walls just want something like the foam to knock down some of the highs on the flat surfaces. or should i say reflect the high freq sounds

    im not looking to absorb the highs just help knock them down some
    and thought of the plastic bottles being used like egg crates or the foam 12x12 panels but cheaper lighter and easier than the wood diffusers

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    i see people use those 1-2" foam bed covers that dont much of anything and figured the bottles would work better than those but im just guessing on the concept and looking for a cheap way of doing it

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    Quote Originally Posted by customdrum View Post
    im not looking to absorb the highs just help knock them down some
    and thought of the plastic bottles being used like egg crates or the foam 12x12 panels but cheaper lighter and easier than the wood diffusers
    Egg crates don't do anything useful and the foam absorbs high end. Diffusers don't absorb anything, they reflect it. They just break it up in such a way that it isn't echo-y or slapback-y. You are barking up the wrong tree wanting diffusers AND the bottle thing won't work either way. It will probably just resonate at an annoying, plastic sounding frequency.
    Jay Walsh
    Farview Recording. I am also the forum spokesmodel for Terasyne Amplification

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    those plastic bottles won't do anything, same with egg cartons.

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