Author Topic: Does curtains on both sides of wall help reduce echo  (Read 1783 times)

Offline wcseow

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Does curtains on both sides of wall help reduce echo
« on: January 10, 2019, 01:03 »
After a year of listening to soundbar in my study room, 2m x 2.7m, itching to go individual speakers as not to satisfied with the soundbar sound.

The room is going to be pretty empty. Just the TV rack, sofa and the sound system. Definitely lots of echo.

Wondering whether putting normal curtains on 2 sides of the wall will work?

Thanks

Offline desray

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Re: Does curtains on both sides of wall help reduce echo
« Reply #1 on: January 10, 2019, 07:38 »
After a year of listening to soundbar in my study room, 2m x 2.7m, itching to go individual speakers as not to satisfied with the soundbar sound.

The room is going to be pretty empty. Just the TV rack, sofa and the sound system. Definitely lots of echo.

Wondering whether putting normal curtains on 2 sides of the wall will work?

Thanks

Yes. It does. Must be thick

Offline wechnivag

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Re: Does curtains on both sides of wall help reduce echo
« Reply #2 on: January 11, 2019, 09:24 »
Thick curtains, and another trick is to have extra curtain length so it folds up, this is especially effective in corners to increase bass absorption. So if your wall is 2m, get 3m length of curtains or even more, and bunch them up at the corners for low frequency control.

Cheers!

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Offline lampsy86

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Re: Does curtains on both sides of wall help reduce echo
« Reply #3 on: January 11, 2019, 18:37 »
Thick curtains, and another trick is to have extra curtain length so it folds up, this is especially effective in corners to increase bass absorption. So if your wall is 2m, get 3m length of curtains or even more, and bunch them up at the corners for low frequency control.

Cheers!

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Fascinating information !!! Thanks

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Offline wcseow

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Re: Does curtains on both sides of wall help reduce echo
« Reply #4 on: January 11, 2019, 19:15 »
Thanks for the info.
I assume it is also better to have the height of the curtain to touch the floor?

Lol..window shopping at ikea for thick curtains on my todo list.

Offline wechnivag

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Re: Does curtains on both sides of wall help reduce echo
« Reply #5 on: January 12, 2019, 10:12 »
Thanks for the info.
I assume it is also better to have the height of the curtain to touch the floor?

Lol..window shopping at ikea for thick curtains on my todo list.
The ikea blackout curtains are good as they are heavy and have some membrane action too for bass absorption .

And very affordable comparatively. Yes, touching the floor is good. Corners (wall - floor) have more bass absorption.

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Offline Jag

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Re: Does curtains on both sides of wall help reduce echo
« Reply #6 on: January 12, 2019, 12:36 »
I agree that good acoustic curtains reduce echo dramatically.
Electronics : Denon 7200, MiniDSP Dirac 88A, Emotiva XPA-5 Gen2
ATMOS Audio : Martin Logan Ethos (L&R), ML Motif X(C), ML Motion 4 (14pcs surround spkrs)
LFE : Dual Rythmik FV25HP & Crowson Motion Actuator
Video : Sony VPL-HW55ES, Stewart Screen Studiotek 1.3
Source : HTPC
Fully automated HT via Alexa, Z-wave and Logitech Harmony Remote Control

Offline desray

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Re: Does curtains on both sides of wall help reduce echo
« Reply #7 on: January 12, 2019, 12:43 »
If can fully carpet the floor...even better :P

Offline wechnivag

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Re: Does curtains on both sides of wall help reduce echo
« Reply #8 on: January 12, 2019, 13:01 »
Curtains and carpets works pretty well for HT, but from strictly stereo perspective, one will find the mid high energy and ambience too significantly attenuated.

One way is perhaps to have the curtain in 3 sections on sidewalls so you can bunch it near the front corners, the midwall, and the back corner.. Leave some alternating reflective wall to preserve some energy. Can also vary curtain placement to fine tune the sound .

If sidewall full thick curtains , and floor full thick carpet, may have slight ear ringing effects, which is a sign the room is over absorbed. Also affects dialogue intelligibility.

Here's the next paragraph on carpets absorption properties. Thicker carpets, with thick liners or backing, will absorb more low range energy..

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Offline andylovesaudio

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Re: Does curtains on both sides of wall help reduce echo
« Reply #9 on: January 12, 2019, 15:45 »
If I may ask ... what’s “ear ringing” effect? What does it sound like? Thanks

Offline desray

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Re: Does curtains on both sides of wall help reduce echo
« Reply #10 on: January 12, 2019, 15:57 »
If I may ask ... what’s “ear ringing” effect? What does it sound like? Thanks

Pressure in your ear that builds up.



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Offline wechnivag

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Re: Does curtains on both sides of wall help reduce echo
« Reply #11 on: January 12, 2019, 21:58 »
Hmm, actually I was referring to the effect of too much mid high absorption, too quiet and the ears start to hear this high pitch ringing sound.

It doesn't seem to happen if the room has very low noise floor, but has diffusers treatment in addition to absorption..


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Offline wcseow

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Re: Does curtains on both sides of wall help reduce echo
« Reply #12 on: January 12, 2019, 23:54 »
If can fully carpet the floor...even better :P


Intend to put a carpet, ikea again lol, but will not cover the whole floor I gather, cause it is nicely parquet already....good to see some wood..lol

Offline wcseow

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Re: Does curtains on both sides of wall help reduce echo
« Reply #13 on: January 13, 2019, 00:00 »
One way is perhaps to have the curtain in 3 sections on sidewalls so you can bunch it near the front corners, the midwall, and the back corner.. Leave some alternating reflective wall to preserve some energy. Can also vary curtain placement to fine tune the sound .

If sidewall full thick curtains , and floor full thick carpet, may have slight ear ringing effects, which is a sign the room is over absorbed. Also affects dialogue intelligibility.


Interesting. Ikea sells curtains in pairs. So gets 3 sets will fit nicely...:)

Offline wcseow

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Re: Does curtains on both sides of wall help reduce echo
« Reply #14 on: January 13, 2019, 21:38 »
Just wondering do I need to put curtains behind the TV and LCR speakers?

Cant drape up opposite wall cause that is where the door is. Lol