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Soundproofing technics for acoustic treatment for the ceiling
Offline1
October 28, 2021 - 1:08 am
I am moving in an new apartment and I have a empty unfinished room for listening. I want to build a good ceiling which has to have good low frequency absorption characteristics.
What do you think about this kind of soundproofing for ceiling and how good will be for absorption the low frequencies in the room ?
Does this absorb low frequencies or only stop them ?
What do you thing about this membrane material and how can be used for building an low frequency absorber ?
https://portal.danosa.com/dano…..038;site=4
Thank you in advance.
Veselin
2
October 28, 2021 - 5:32 am
What are the frequency and amplitude of your issues? Are you wanting to absorb low frequency energy or reduce noise transmission? Noise transmission is defined as sound leaving your room and bothering others or sound from others coming into your room. You must be specific defining your problem since barrier (noise) technology is different than sound absorption technology.
3
October 29, 2021 - 12:55 am
Hi, thank you for your fast response.
About your first question here is my measurement. When I did this measurement the room was completely empty without a front door.
Here is the size of the room. It is not a rectangle room.
https://files.fm/f/ajges3srw
https://files.fm/f/da7pt4n5k
https://files.fm/f/f7tf3k66u
The ceiling is 2.7m height and I can down to 2.5m and use this 20 cm for absorption .
My goal is to absorb low frequency energy as much as possible.
I want to mount many low frequency absorbers on the ceiling for saving space.
At the beginning My idea was to build Helmholtz resonators and mount them on the ceiling and tune them one by one but the work and time is too much. After than I found the video in my previous post which is easy to build but it is for soundproofing not for sound treatment. Now I saw you videos for Diaphragmatic Absorber and as you said it is best low frequency absorber .
4
October 29, 2021 - 6:54 am
In a small room of this size, you will need to place low frequency absorption on the 4 walls, floor, and ceiling. Low-frequency absorption requires 12″ of space to treat.
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