Custom Sound Absorbers

CONTENTS Acoustic environment Case histories Sound absorption Other sound absorbers Installation instructions IsolSpace Style school canteens school gyms conference rooms music spaces other applications

SOUND ABSORPTION Noise: an old problem turn into real disorders (second level), up to determine a physical injury (third level). Noise has always been a problem since the ancient past. Reference to this problem can be found in Marziale’s “epistolae”. Marziale craves his country house because “for a poor there is no place to think or to rest in Rome” due to the incessant noise of the city. Also Seneca complains about his house above the thermal baths and underlines that “during study, silence is as necessary as sight”. An acoustic environment falls into one or another category, depending on several...

REVERBERANT NOISE The acoustic environment The acoustic environment is experienced on a daily basis, because every person spends a lot of time inside buildings – office, home, school, restaurant or cafeteria, gym, etc... It is possible that the phenomenon is not directly related to the effect but surely, if the environment is not acoustically suitable to live, those who remain inside a noisy room will suffer the consequences in terms of decreasing comfort or even a real sound annoyance. Reverberation The phenomenon of reverberation describes the increase in sound level from an active source in...

Reverberation This phenomenon, called “reverberation”, is often and generally perceived as disturbing or annoying in many environments. For instance, consider school canteens, restaurants, openspace office and all those environments in which reverberating sound, which does not diminish with distance but only with multiple reflections, generates a very noisy background that covers new sound sources. Those are the condition in which the voice volume must be raised to cover the noise and be heard by the listener. And, this problem increases exponentially as a result. place there. Optimal reverberation...

According to UNI EN ISO 3382-2 the reverberation time T60 is measured in seconds, as the time it takes for the sound signal to decay by 60 dB once the source is off. The reverberation time depends on the ability of the surface to absorb sound energy. Reflective materials such as glass or mirrored surfaces, and irregular geometries such as vaulted ceilings, can make the interior acoustics particularly unfavourable for certain intended uses. As mentioned, a high reverberation time is not always perceived as annoying. In some cases it may be pleasant, such as inside an ancient Optimum time of reverberation...

SOUND ABSORPTION When the sound waves propagating in a enclosed environment reach the surfaces delimiting the volume, they meet an obstacle to their transmission and leave energy inside the material on which they crash. The amount of energy that remains trapped in the material depends on the physical and morphological characteristics of the material itself. In this sense, a material is as more sound absorbing as it can keep the sound. This is the typical behaviour of porous and fibrous materials that dissipate sound energy into heat energy by friction, but also of vibrating panels that dissipate...

it depends on the thickness of the panel, and also on the panel installation with respect to the rigid surface (e.g. in adherence or with cavity). environment. That means, to achieve the optimum reverberation time that depends on the intended use and architecture of the room. The maximum absorption occurs when the surface that is impacted by the sound is an open window. In that case, it returns no reflected sound energy and represents the limiting case of total absorption. Absorbing materials attenuate the reflected sound field, while they do not affect direct sound. The absorption of sound energy...

Moreover, in Italy the DM 08/12/1975 is also in force, as reference standards for the general construction of schools. It sets out the value of the optimal reverberation time in relation to environment volumes, and the frequency, as shown in the two following diagrams, which represents a scenario at 500 Hz for a room of 1000 m3. To comply with the Ministerial Decree, special care is needed in the choice of materials, so that the absorption coefficients can conform to the reverberation times shown in the second graph. This dual regulation, although sometimes In this regard, the Prime Ministerial...

UNI 11532 “Acoustics in buildings - interior acoustic characteristics of confined spaces” To solve the lack of legislation in the field of room acoustics, and provide support for the design of the acoustic comfort of the environments, in 20014 it was issued the standard UNI 11532 “Acoustics in building - interior acoustic characteristics of confined spaces”. This standard proposes reference values for the optimum reverberation time of rooms. The values of T60 suggested in the standard are taken from international standards, if not established by the Italian law. With this tool, it is possible...

ISOLSPACE STYLE IsolSpace Style is the panel for acoustic correction by Isolmant. It is indented for any type of environment thanks to its high soundabsorbing characteristics, its total non-toxicity, and the wide range of customizations. When surface mounted, it can absorb the sound waves within very noisy rooms. It is a panel made of 100% ISOLFIBTEC STL, a special recycled fibre of polyester for technical application whose density increases along the thickness, and characterized by a high acoustic performance. Thickness approx. 45 mm. Absorption coefficient Frequency Hz Weighted sound absorbtion...

and shapes allows the integration into any environment, making it a nice piece of furniture. Easy to install IsolSpace Style can be applied to walls and ceilings, with baffle or island suspension or inserted in the appropriate aluminium frame. Environment friendly ISOLFIBTEC STL is 100% recycled from post-consumer material (recycled polyester from plastic bottles). It is therefore a low environmental impact material. Variable density panel In terms of its morphological features, the IsolSpace Style panel is specially designed for high acoustic performance, maintaining low thickness and weight....