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" Thin-glass goblets can vibrate when hit by sound waves. This is due to resonance. Some singers listen to the note produced when a glass, so that their voice vibrates the glass so much that it shatters. "
Eurocoustic offers a wide range of acoustic and decorative solutions: ceilings, wall panels, baffles made out of stone wool.
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Our Stone Wool products target acoustic performances. The stone Wools have an acoustic absorption coefficient (w) higher than 80. They meet the requirements in terms of fire protection. They guarantee perfect stability in humid environments.
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Our products offer a variety of over 40 designs, colours and patterns for a smooth esthetic aspect at particularly competitive price. The new exclusive finish Boreal is especially conceived for the interiors requiring a very good luminous comfort, a very good quality of the air or a frequent maintenance. The satin white Boreal finish contributes to light comfort design. The smooth surface does not retain dust and is easy to clean. Thus Boreal ceilings may be used in dust controlled rooms.
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Our mineral wools reduce sound harmful effects, consumption of energy and CO2 emissions. Stone wools are manufactured from widespread raw materials. The production process allows for an easy recycling of production. Stone wools are manufactured from widespread raw materials. Stone wools are Non-organics and inert, thus they do not allow any microbial development. According to the International Agency for Research on Cancer, stone wools cannot be classified as regards to their carcinogenicity to humans (group 3).
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The purpose of acoustic correction is to adapt the acoustic quality of a room to its use. It improves the acoustics of a room. Decrease the sound level in a noisy place to make it more bearable.
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Principle of the acoustic absorption: Incident acoustic energy on the walls are divided in energy transmitted, reflected energy and absorbed acoustic energy. According to the nature of the walls of the room, it is possible to influence the quantity of absorbed energy and thus reflected the aptitude of a material to be absorbed is evaluated using the absorption coefficient Alpha Sabine.
Acoustic plaster is a low-density sound-absorbing plaster applied as a finish coat to provide a uniform finished surface. It is generally a spray-applied plaster which allows for good acoustic absorbing abilities. It is usually applied to a metal base, and lessens extra sound where applied.
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BASWAphon acoustics systems have been tried, tested and proven to be ideal for this application thanks to a minimal loss in ceiling height, the additional thermal insulation, the system’s seamlessness, all combined with exceptional acoustics.
When dealing with already existing ceilings (abrasion, coat of paint), the adhesive strength ought to be determined in advance. Should it be less than 250 N/m², the background has to be strengthened by an insulation liquid suitable for the existing coating and/or an additional mechanical fastening has to be placed on the glued supporting panels with BASWA metal clips.
Otherwise, the supporting panels’ entire surface is glued on the dust-free and forming-oil-free cement ceiling with the adhesive suited for the background. Casing offsets larger than 3 mm have to be leveled out in advance.
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When confronted with large surfaces, the formation of dilatations may become necessary based on the specific characteristics of the object in question and the work sequence of the construction. When following the principle shown, no air circulation can take place in the vicinity of the hollow space, explaining why partial soiling can be ruled out.
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Openings for recessed lights can be made by means of a carpet knife, crown bit or saw after completion of the final coating.
In order to conceal damage done to the edge during installation or maintenance, the masking ring should have a width of a minimum of 1 cm. The lights have to be fastened to the solid background or substructure, respectively. We do not recommend merely laying installations on the fiber panels.
If however recessed lights are installed with a narrow masking ring or with a spring system, a metal case or a BASWAphon installation platform (BASWAphon IP) must be built in, in lieu of the elastic mineral fiber panel.
All panel’s front faces, penetrations are to be hermetically sealed by means of a PE-band or a coat of gypsum plaster board. By doing so, partial soiling, which can take place as a result of panel airflow, can be prevented.
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In order to prevent fissuring, all BASWAphon acoustic surfaces ought to be separated from bordering surfaces and objects in the vicinity such as curtain rod tracks, tubular feed-throughs, embresures, etc. with a BASWA tape joint. In addition to what is shown on the diagram, the severance strip can also be cleanly cut only after completion of the BASWAphon top surface.
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Due to higher mechanical oscillations or expansion coefficients (with respect to air humidity), respectively, when dealing with connections on dry walls or wooden walls, we highly recommend choosing a 2 to 3 mm Swedish cut.
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Individual shadow gaps can of course also be filled according to the diagram.
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The BASWAphon acoustics system can also be used for projection purposes, that are overhead projectors, movie and slide presentations. The application of the system on wall is similar to ceiling application. As an alternative, a white synthetic reinforcement net can either be partially or entirely embedded when the first foundation layer is being applied (BASWAphon – 407). This helps increase system stability. However, additional reinforcement may cause absorption to be somewhat diminished.
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Maximum mechanical stability of specific exposed areas can be attained by applying curtain walling made out of mineral building material. This is then covered by the acoustically effective surface, thereby creating a seamless wall. The transition region between the curtain walling and the BASWAphon supporting panel ought to be reinforced with a net in order to prevent the formation of fissures.
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Untreated aluminum or metal profiles are not suitable for filling edges. When using aluminum, for instance, gray streaks may be caused by the abrasion when the coating is being applied. Metal profiles may leave color residue when applying thin layers. In order to grant material homogeneity, we recommend the use of BASWAphon synthetic edge protection profiles (BASWAphon – KS, Art.Nr. a027) when filling edges.
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In lieu of BASWA-KS, an appropriate angle section made out of stove-enamel sheet metal, chrome steel or the white synthetic material BASWAphon-end section can also be used. This can be an advantage when having to clean lateral air evacuation ducts or to provide protection from mechanical damage.
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The side of light shafts is often covered with gypsum plaster board. The diagram shows a suggestion for how to fill the edge without making a severance. This calls for optimal dry construction. In order to rule out any fissures between the fiber panel and the bottom view of the ceiling, we recommend making severance cut.
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General information: This is tried and tested system can be put to use universally and combines all the advantages of the BASWAphon acoustic system. The system provides the highest degree of freedom, enabling the creation of the very finest surface structure.
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General information: This one-layer procedure stands out for its smooth, fine surface. This system is ideal for suspended systems and/or in case of a need for short installation times.
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General information: This module has a smooth, white, seamless, finely structured and mechanically-speaking relatively durable surface with an interesting price-performance ratio.
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General information: This product combines sound absorption with the water-bearing capillary tube system and creates a room temperature in tune with our clients’ specific needs.
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In order to avoid partial soiling of the surface and in order to uphold the fire resistance class F30, the system requires a closed ceiling sub-structure. A standard suspended system made out of metal tracks can be used for sub-structure. Wooden sub-structures are not recommendable due to possible fissures as a result of long-term deformation. As a suspension basis for the BASWAphon – construction, a solid, 12.5 mm plaster board or plaster fiber panel covering ought to be chosen. (When constructing in humid rooms, such as swimming pools, the choice of sub-structure must be determined on the basis of building physics.) In order to avoid partial soiling of the surface, the butt joints have to be levelled out. If a pressure differential over the ceiling application cannot be ruled out, a large opening, which can be concealed with a loudspeaker cloth, should be formed. The surface of the suspended ceilings must be dry and free of any dust particles. The pre-coated supporting panels are glued entirely on the smoothed plaster board ceiling with a gypsum based adhesive. Additional mechanical fastening is not necessary.
Timber Acoustics products are manufactured from medium density fiberboard (MDF) as a standard. Thanks to the homogeneous structure, MDF is well suited for this application. MDF panels are produced from soft and hard wood fibers with added binding agents. Only panels meeting the international emission values E1 are processed. If there are flame spread and smoke developed requirements, special core panels are used.
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A board spectrum pf perforations for wall and ceiling finishes. Conventional M-Perforation, discreet T-Perforation or Microperforation (Clou). Available in panels (up to 3600 x 1200 mm) for walls, ceilings and cabinet fronts.
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The redefined acoustics system for wall and ceiling finishes. Many different groove patterns with variable acoustics. Available in planks with a tongue and groove connection (plank width = 128mm *) for joint free surface treatment or in panel (panel width = 300 - 1200 mm) for removable or fixed ceilings or cabinet fronts.
Industrial products are products used to prevent the internal noise created by machines sets from getting out of the plant room.
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Phoenix Acoustic Doors are specially designed, flush panelled steel doors to provide high sound insulation performance.
The door leaves and frames are rigidly constructed of heavy gauge steel sheet and filled with heavy acoustic fillings. All Phoenix Acoustic Doors are fitted with heavy duty hinges, in order to swing easily despite their weight. Stainless steel sill is provided against corrosion and wear.
The design of the sill enables easy installation at site and also easy grouting of concrete to form a more solid foundation. The sill is installed at the same level as the finished floor level.
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Phoenix Acoustic Panels offer a simple solution to noise problems in industrial environment. Designed to cover a variety of performances, the panels are available in a range of finished and thickness.
Standard panels are of thickness 50mm, 75mm and 100mm with width of 750mm and lengths available up to maximum of 3.6m. All panels are manufactured from heavy gauge galvanized steel on external faces and perforated inner galvanised steel sheet retaining inert, high temperature sound absorbing material. Panels providing noise reductions up to 40dB (STC) can be designed by our engineers and fabricated in our factory.
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Phoenix Circular Silencers are used for controlling the noise of Air-conditioning and ventilation systems in office buildings, hotels, shopping centers, car parks, hospitals, etc, and wherever air-conditioning and ventilating systems are installed. Phoenix Circular Silencers are available in a wide range of diameters and lengths and are normally supplied with flange ends with threaded holes for direct attachment to most axial flow fans and blowers in the market or it can be connected directly to the air-conditioning and ventilation ductwork. Individually designed silencers are also available to meet specialized requirements and are designed for both ‘on fan’ and ‘in duct’ applications.
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An acoustic room is a room or enclosure intended for a specific purpose in relation to measurement of sound or for the isolation of the interior from external sources. There are kinds of room used for measurement purposes as follows:
1. Anechoic Room
for true free field measurement.
2. Semi-Anechoic Room
for free field over a reflective ground surface for equipment testing.
3. Reverberation Room
good general standard for indoor measurement with hard (reflective) walls, floor & ceiling.
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The Phoenix range of rectangular attenuators are selected after an extensive computer analysis of the attenuator application criteria.
Standard Construction
The standard construction of a Phoenix attenuator is suitable for use up to a maximum pressure of 2000N/m².
Phoenix attenuators are constructed from heavy gauge high quality pregalvanised mild steel sheet. The end flanges comes with holes drilled of standard sizes.
The acoustic splitters are manufactured separately before being assembled into the casing. The splitters are filled with incombustible and inorganic sound absorbing mineral wool and protected by pregalvanised perforated mild steel sheet. The standard acoustic in-fill is suitable for a continuous exposure of up to 260 ºC.
For higher velocity applications, our special constructed Phoenix attenuators has a glass tissue facing inside the perforated galvanized steel sheet to prevent damage and fibre erosion.
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Phoenix Acoustic Louvres are specially designed to be use in high-rise buildings, hotels, shopping complexes where the external finishing is important.
The acoustic louvres are designed to allow the free flow of large volumes of air and at the same time to prevent the internal noise created by electric motors, compressors, blowers or generator sets from getting out of the plant room.
The louvre blades are designed to give maximum air flow with low pressure drop characteristics.
Phoenix Acoustic Louvres are constructed from heavy gauge galvanised sheet metal for the casings, containing numerous louvre blades.
Silent Foam are sound-absorbing materials that are used to treat the walls and hard surfaces, preventing the overall buildup of conversation, music, activities and reverberation that can cause decibels to soar to very loud, even painful range.
Silent Walls is recognized today as the product of choice for installing fabric as an architectural finish and as acoustical treatment.
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Silent Walls is recognized today as the product of choice for installing fabric as an architectural finish and as acoustical treatment.
Silent Walls is composed of three components:
1. A patented polymer stretching system
2.A core
3.A textile finish
The design professional need only select one type from each of these three components to create a system to fit their needs. Because of the unique Silent Walls system, the designer is no longer tied to traditional acoustical modules. The design is free to mold, shape, curve and delineate surfaces while meeting the demands of acoustical engineering.
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Silent Walls is available in standard 1 (25mm) and 2 (50mm) inch depths. Other specialty system depths are available on an individual job basis.
The standard edge conditions are bevel, radius, square and welted.
Specialty midwall conditions are also available in the form of integrated reveals. Reveals are available in standard widths and edge conditions offering the designer a dramatic styling tool.
Reveal finishes can consist of paint, wood, metal and other specialty materials.
The Silent Walls system, being site fabricated, accommodates all normal construction irregularities. It may be applied to virtually and wall or ceiling surface whether it be gypsum board, stone, metal, brick, concrete, block or wood.
Composition® is an acoustic wall covering developed specifically to reduce reverberated noise in building interiors. Composition® will typically reduce reverberated noise by approximately 40%
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Features & Benefits
Composition is an acoustic wall covering developed specifically to reduce reverberated noise in building interiors. Composition will typically reduce reverberated noise by approximately 40% (NRC 0.4).
Composition also incorporates Pinguard to provide superior pin retention making Composition the prefect choice for pinboard and display applications.
Composition is made from Vertiface fabric laminated to an acoustic, needle-punched and thermally bonded polyester backing, and is adhered directly to the wall substrate.
Vertiface and Composition are manufactured under the ISO 9001 quality system.
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Composition is ideal for use on vertical surfaces and as Composition provides a pin, staple and ‘hook and loop’ receptive surface; it can effectively transform your walls into giant acoustic noticeboards.
Composition is especially well suited for the education sector, commercial offices, theatres, libraries, retail, restaurants, residential applications including kids bedrooms anywhere reverberated noise is a problem.
Diffusors (or diffusers) are used to treat sound aberrations in rooms such as echoes. They are an excellent alternative or complement to sound adsorption because they do not remove sound energy, but can be used to effectively reduce distinct echoes and reflections while still leaving a live sounding space.
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Problem: Interfering reflections that degrade intelligibility, gain before feedback, and music quality can be controlled by absorption and diffusion. Since commercial surfaces that provided uniform diffusion over a wide frequency range and for all angles of incidence were not available, absorption was used solely to control reflections. This treatment created “dead” spaces. Solution: In 1983, RPG introduced the first commercial QRD diffusor, based on mathematical number theory. Now a predictable diffusive surface treatment is readily available.
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Diffusor: Compared to a flat reflector panel, the ORD 374 offers significant diffusion above the diffraction limit of 565 Hz, which is equal to the speed of sound (1130ft/sec) divided by the 2’ dimension of the panel. As the frequency increases above 565 Hz, the graph indicates how the reference reflector becomes more and more specular, whereas the ORD 734 provides a uniform diffusivity. Absorption: The wooden ORD 734 or plexiglass diviewsor contribute minimal absorption. The low cost Kydex Formedffusor is designed to provide additional low frequency absorption.
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Features ORD sound diffusor Wood finish paintable finish or transparent plexiglass Custom finishes are available Distinctive texture appearance Can be surface or flush mounted Can be oriented to provide two dimensional diffusion in the far field Benefits Attractive finish allow its use in variety of decors Can be used to control unwanted reflections without adding additional absorption Applications Music education facilities, band rooms, recording studios, post production studios, home theaters, worship spaces, auditoriums, performing arts centers.
In most doors, gap is needed in between the door frame and the floor inorder for it to function properly. To maintain privacy and required sound transmission loss rating, acousics door seals is used to provide a barrier to airborne sound and help ensure that the acoustic performance provided by a door set ( frame, door and seals) are keep to the specified rating for the wall or partition.
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With a closed cell sponge neoprene seal, the #470 has additional integral sound-absorption material and a snap on, tamper-proof cover. Its dimension are size to allow installation as a stop. Like the other alternatives discussed below, the absence of adjusting screw makes this an option where the requirements for the sound control do not require the highest possible STC ratings over time for the installed system.
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The 5/8” depth allows this versatile gasket to be installed as a stop—or attached to an existing 5/8” stop. The seal is sponge neoprene, and the gasket comes with a tamperproof cover.
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Similar to #376 in its function and other design features, model #375 offers a vinyl sound seal with a magnet. Meeting Stile Protection SOUND TRAP-PAIRS uses an astragal designed for double doors with one door active. We will advise you on special hardware needed for your meeting stile.
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A Compress-O-Matic ® solid neoprene bulb serves as the primary seal on this gasket. The dimensions and all other design features are identical to the #470. ZERO recommends the #472 for use with wood doors or wood frames without a stop.
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For metal doors, this astragal uses a vinyl-covered interior magnet. It is applied to the inactive door only.
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Some designers may prefer the look of the double Compress-O-Matic ® seals in this gasket, which is also sized to be installed as a stop. The extra “finger” of neoprene that presses against the solid neoprene bulbs when the gasket is compressed by the door helps compensate for any misalignment of the door, which helps to boost sound-control performance.
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The compression seal in this door bottom is a neoprene bulb. This model can be surface mounted. For semi-mortised installation, model #366 is available.
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The compression seal in this door bottom is a neoprene bulb. This model can be surface mounted. For semi-mortised installation, model #366 is available.
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The compression seal in #362 is closed cell sponge neoprene. In addition to the standard #362 semi-mortised door bottom for SOUND-TRAP pairs, we also offer model #361 for a surface-mounted alternative.
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The advance technology common to all of our automatic door bottoms utilizes a concealed flat spring mechanism, which activates when the door is closed, lowering a neoprene seal insert firmly against the floor or saddle. Triggered by a protruding, hinge-side “plunger” that is compressed by the frame as the door closes, the spring activates, dropping the seal in a patented scissor-like motion from a pivoting point. This motion ensures a smooth drop without drag and a tight seal, even on an uneven floor. As the neoprene seal compresses, it forms a tight, secure bond against the saddle or floor. The seal retracts automatically as the door is opened.
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Product Code STC 2 (Click below image to enlarge)
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Product Code STC 6 (Click below image to enlarge)
" Thin-glass goblets can vibrate when hit by sound waves. This is due to resonance. Some singers listen to the note produced when a glass, so that their voice vibrates the glass so much that it shatters. "

