Drapes for Acoustic Treatment

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soulforged

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Drapes for Acoustic Treatment
« on: 18 Jun 2018, 02:59 pm »
Hello,

Any recommendation on the kind of drapes (material, brand, thickness...anything) that I could use to minimize the effects of glass windows?

My system is in the living room so lot of windows :( and high priority on WAF

Thanks!

FullRangeMan

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Re: Drapes for Acoustic Treatment
« Reply #1 on: 18 Jun 2018, 03:11 pm »
When I was married the significant other liked drapes, so I took the opportunity to muffle the room that had a very lively sound and put on double curtains. The external curtain should be thin and white, the internal should be a heavy, dark and opaque fabric.

For lively rooms this is the recipe.

kernelbob

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Re: Drapes for Acoustic Treatment
« Reply #2 on: 18 Jun 2018, 10:22 pm »
Hi FullRangeMan,

Did you find any drapery sources that had a better selection of product that was especially well suited as sound treatment for a large room with an excess of reflective surfaces and numerous large picture windows?

Thanks,
Robert

Bendingwave

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Re: Drapes for Acoustic Treatment
« Reply #3 on: 18 Jun 2018, 10:51 pm »
There are different degrees of drapes that block out sunlight....you want the one that blocks out the most sunlight.

FullRangeMan

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Re: Drapes for Acoustic Treatment
« Reply #4 on: 18 Jun 2018, 10:57 pm »
Of course no, I dont tell nothing to the salesman or to my wife, the internal cloth was called juta, the external I dont remember as I let she choose. The result looks like this image below.
https://www.google.com.br/search?q=juta+para+cortinas&dcr=0&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiq5duIo97bAhULgZAKHe7ZCV4QsAQIMg&biw=1024&bih=678

JLM

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Re: Drapes for Acoustic Treatment
« Reply #5 on: 19 Jun 2018, 11:50 am »
Drapes are minimally effective as absorbers, period.  It's been awhile since I looked this up, but as I recall some studio drapes did the best (still very poor).  What frequencies do you have compliants about? 

My mom had 'insulating drapes' that had a rubber backing that were probably relatively good absorbers.  Shears or anything that lets light through is probably going to be extremely ineffective.

FRM - in english it's called 'jute'.

Elizabeth

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Re: Drapes for Acoustic Treatment
« Reply #6 on: 19 Jun 2018, 02:03 pm »
I have drapes. The window is very wide, and the drapes always opened. They are lined and pretty heavy.
With them open, and the nearby walls with shelving nearly to ceiling, the corners are sort of acoustically treated.
Sort of.
My Magnepan 20.7 are rather far apart (60"all space) in front of the window. And out 42" to 59" being tilted in, tweeter 'in' rather than out.

richidoo

Re: Drapes for Acoustic Treatment
« Reply #7 on: 19 Jun 2018, 03:47 pm »
This site looks interesting.

youngho

Re: Drapes for Acoustic Treatment
« Reply #8 on: 19 Jun 2018, 04:30 pm »
From Floyd Toole's Sound Reproduction:

As shown in Figure 21.4, drapes can also be effective sound absorbers if they are of the right kind, and that is simply described as “heavy.” Heavy velour, the heavier the better, is probably the most popular choice because in its draped form it constitutes a resistive absorber of signifi cant thickness. Other heavy fabrics with the right porosity/fl ow resistance also work well, but lightweight, open-weave fabrics (easy to blow air through) are useful only for decorative purposes.

FIGURE 21.4 A fuzzy curve showing approximate absorption properties of heavy velour drapes, draped to one-half of their fl at area. The drapes should be hung on a track located 4–6 in. (10–15 cm) from the wall to ensure good low-frequency absorption.

Bill O'Connell

Re: Drapes for Acoustic Treatment
« Reply #9 on: 19 Jun 2018, 07:02 pm »
My wife & I moved last year and we have some beautiful Restoration Hardware drapes we will be selling .
 Ask your wife if these would have the WAF . Really a nice quality lined drape to say the least. They are in a beige/camel color if
that is what you might be looking for.
  We are just looking to get a little something out of them, not trying to make a killing.
 Let me me know in PM if possible interest, I can send photos.

RH.com

If you go here:   https://www.youtube.com/watch?reload=9&v=mu3BTqJANPQ     you can see drapes at the 37 second mark ,1:13 mark( Pewter Grey in color ) & 1:30 mark on the video  if your wife wants to check it out.

 Regards,
 Bill

John Casler

Re: Drapes for Acoustic Treatment
« Reply #10 on: 25 Jun 2018, 12:25 am »
At a Price/Performance consideration THESE worked out well for me



The BLACK also served well for significant Light Reduction.

They are THICK, HEAVY, OPAQUE, and QUIET.

Price is not bad either for a functional drape that also reduces reflected sound.

Bendingwave

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Re: Drapes for Acoustic Treatment
« Reply #11 on: 25 Jun 2018, 12:46 am »

FullRangeMan

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Re: Drapes for Acoustic Treatment
« Reply #12 on: 25 Jun 2018, 12:50 am »
Incredible low price, cant believe.