ᐅ Acoustic ceiling for reducing echo and reverberation

Created on: 13 Aug 2023 19:32
L
LostWolf
Topic: Acoustic Ceiling:
Many people are familiar with those wood/felt panels from hardware stores and similar places.
It is clearly noticeable that the felt reduces the reverberation in the room.
However, I prefer the look of the "Ligno" system.
From the room side, I don't see any surface that could absorb sound, only wood.
Does anyone have more expertise on this and can tell me to what extent this can reduce reverberation in a room (in my case, a living room with hard walls and very large windows)?
Would adding additional insulation wool behind the panels result in greater sound absorption?


Floor plan of a living space with 34.70 m² (374 sq ft), red rear building limit and fire wall on the right.
B
Bertram100
14 Aug 2023 10:19
KarstenausNRW schrieb:

but a normally furnished living room serves the purpose at a fraction of the cost
I actually have a reverberation problem during conversations in a 4x4m (13x13 ft) room made of aerated concrete blocks, with a fairly small window (240x100cm (95x39 inches)) and normally furnished with carpet.
I have the felt panels, and they work really well. Visually, though, the many stripes make it a bit unsettling.
Now I’m considering hanging a Ligno panel on the wall as decoration. I don’t find it particularly attractive.
H
hanghaus2023
14 Aug 2023 18:02
Suspended ceiling with perforated gypsum board panels.
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hanghaus2023
14 Aug 2023 18:08
My son framed 8cm (3 inches) thick stone wool and covered it with fabric to prevent it from falling out of the frame. A perfect DIY solution, but very labor-intensive.
K
k-man2021
14 Aug 2023 19:01
LostWolf schrieb:

Still, I would prefer to address the problem directly rather than fix it through software.
Does anyone have experience with the products from "ligno"?

No experience yet, but our architect has had good results with them and we will probably go that route as well, although it will still take a few years...
One more note regarding software: acoustics are not just about listening to music, but especially about feeling comfortable in a room without music. Acoustics have a major impact on that, which cannot be corrected by software.
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Harakiri
15 Aug 2023 12:46
In principle, Lignotrend acoustic panels are not (much) different from the felt-wood products – the acoustic absorbers in Ligno panels are wood fibers. Overall, the Lignotrend solution is better, and the effects can be simulated much more accurately since the manufacturer provides detailed acoustic data (DIY store panels usually come with a rather vague "sound absorption class").

However, they do not work miracles – if your (theoretical) problem can truly be solved by acoustic absorption, you will need to provide sufficient air gaps behind the panels, as well as additional backing material (e.g., hemp or PE fleece). Even then, you will not be able to solve everything below 300 Hz.
11ant15 Aug 2023 12:54
Harakiri schrieb:

if your (theoretical) problem is really solved by acoustic absorption, then you also need to provide sufficient cavities behind it,

Of course, the dead sound also needs a resting place ;-)
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