Category Archives: How does it really work
Why Christmas isn’t a Lean holiday
You’re probably thinking I’m talking about all that rich food we devour over the Christmas holidays and how we need to keep an eye on our weight. But that’s not what I mean at all. What I’m talking about is what has mesmerized production industry in recent years, ever since Toyota pulled that legendary cord. […]
A creative challenge – a story from our Spanish Installer
DAVISINE paints a Picasso mural Our Spanish representative, Javier Durán from Tecnologia Almendralejo SLL, shared a story about a little project of his, and in turn we wanted to share it with you guys: “My name is Juan Luis Agenjo, or Juanlu; ever since my early teen years I’ve had a need to transfer my […]
New video from our North American Fellert representative
This is a new video from Fellert North America, our North American sales representative. 90 seconds that explains most of the advantage of using seamless acoustical ceiling systems and especially Fellert, off course! Click here to get to the video Have fun!
24 h instant Fellert Even Better installation
There are a lot of facilities where you need some kind of acoustical treatment but for design purposes, cultural value purposes etc. you are not able to use many of the different products available, simply because they will change the design too much. Acoustical plaster systems are ideal in the aspect that they can be […]
Reverberation time and room acoustics
You can very easily understand what reverberation time is by clapping your hands and listen to the echo and how it fades. The time it takes for it to go away is the reverberation time. When we talk about reverberation time we often mean the T60, which is the time, in seconds, it takes for […]
Fellert at the State Mosque in Doha
The acoustical consultant Soliflex recently published this Youtube clip regarding their work, including Fellert at the State Mosque in Doha. click here Previous post on the State Mosque: https://www.fellert.com/blog/2012/03/09/the-state-mosque-in-doha-qatar/
Fellert acoustical ceilings on curved surfaces
Fellert’s way of using unfaced absorbent boards which can be installed directly to a suspension grid or glued to various backings such as GWB, concrete etc. makes it especially suitable for curved surfaces. Most ceilings needs some sort of special arrangements in order be suitable for curved ceilings. Making a special arrangement basically means that […]
Sound class and weighted alpha
As well as ASTM has its terminology on how to express the absorption of materials and how to define this, the International standardization organization ISO got one as well. When ASTM talks about NRC to express the sound absorption of a material, ISO talks about Sound class and weighted alpha. NRC is explained in a […]
NRC, weighted alpha value, sound absorption class, what does it really mean? pt 2
Acoustical ceilings are very often accompanied by mystic terms and expressions but what is really the practical use of all these expressions and how do i know how it will affect my sound environment. In the previous post we tried to explain Sound absorption. If you missed it, catch up here. Let’s see if we […]
NRC, weighted alpha value, sound absorption class, what does it really mean? pt 1
Acoustical ceilings are very often accompanied by mystic terms and expressions but what is really the practical use of all these expressions and how do i know how it will affect my sound environment. Let’s see if we can make some sense out of all this and let’s start with the expression sound absorption: Sound […]