How to calculate acoustic value in a building

In addition to providing insulation and acting as a substrate for roofing, in many situations roof insulations also need to provide noise reducing characteristics. Building constructions near airports or other high noise areas require noise reduction principles to be employed. Today, the noise reduction properties of roof insulation must be known to properly design structures in high noise areas. Designing constructions to control noise requires, at a minimum, a basic understanding of terms and methods used to develop design values for various constructions. Sound travels through a building component because it sets up vibrations in that component. Almost all building materials are sufficiently elastic to transmit sound. Therefore, almost all building materials can be set into motion by sound waves impinging upon them. Once construction is set into vibration, it will transmit sound from the source through the construction and the sound will be heard on the opposite side of the construction. The result is sound transmission through construction. Sound travels through a building component because it sets up vibrations in that component. Almost all building materials are sufficiently elastic to transmit sound. Therefore, almost all building materials can be set into motion by sound waves impinging upon them. Once construction is set into vibration, it will transmit sound from the source through the construction and the sound will be heard on the opposite side of the construction. The result is sound transmission through construction. The ability of a construction to transmit sound is dependent upon its mass. The higher it’s mass, the more it is resistant to vibration caused by sound. If the mass were extremely small, even faint sound pressure could move it and thus transmit sound.

In addition to mass, numerous other factors must be considered in proper sound control design. Such factors include background noise level, and transmission through floors, walls and penetrations through the construction (which also includes insulation joints). An acoustical engineer should be consulted when dealing with acoustical design.

Acoustical terms that are important to know before calculating acoustic values:

• Sound Pressure Level:

When it comes down to it, your ears are pretty amazing. They allow you to hear sounds as quiet as a whisper and as loud as a jet engine. How exactly do sound waves get transmitted to your ears so that you can hear?

It starts with a vibration in the air. A whisper only vibrates the air a little bit, while a jet engine vibrates it A LOT. This vibration creates a pressure wave that passes through the air, spreading out in all directions as it goes. Sound pressure is the pressure measured within the wave relative to the surrounding air pressure. Loud sounds produce sound waves with relatively large sound pressures, while quiet sounds produce sound waves with relatively small sound pressures.

Sound pressure, like other kinds of pressure, is commonly measured in units of Pascals (Pa). The quietest sound that most people can hear has a sound pressure of 2 x 10-5 Pa, so this pressure is called the threshold of human hearing.

• An audio frequency or audible frequency:

 is a periodic vibration whose frequency is in the band audible to the average human. The SI unit of audio frequency is the hertz (Hz). It is the property of sound that most determines pitch. The generally accepted standard range of audible frequencies for humans is 20 to 20,000 Hz, although the range of frequencies individuals hear is greatly influenced by environmental factors. In air at atmospheric pressure, these represent sound waves with wavelengths of 17 meters (56 ft) to 1.7 centimetres (0.67 in). Frequencies below 20 Hz are generally felt rather than heard, assuming the amplitude of the vibration is great enough. High frequencies are the first to be affected by hearing loss due to age or prolonged exposure to very loud noises.

• Reverberation time:

is the time required for the sound to “fade away” or decay in a closed space. Sound in a room will repeatedly bounce off surfaces such as the floor, walls, ceiling, windows or tables. Reverberation is one of the most significant acoustic properties of a room. Knowing the reverberation time is essential in characterizing rooms, be they performance spaces, ordinary rooms or open office spaces.

The laboratory method to measure acoustical values to use special instruments.

Also, there are some programs ”acoustics calculator” which provide you with a quick overview of the acoustics in a room. Just type in your room data – measurements and material – and the acoustics calculator generates a precise overview of reverberation time, absorption area as well as other relevant information about acoustics. You can have the report sent to your e-mail or you can print it – either on paper or as a PDF. First select the shape of the room, and second type in length, width, and height. The total area of ceiling, floor, walls, doors and windows is automatically transferred to the further calculation. The total area for doors and windows will automatically be subtracted from the total wall area. Then you can get information about the sound level and its distribution in the building. On the other hand, you can know the exact amount of noise reduction the building needs so that desired special acoustic panels.

Different collection of acoustic panels for celling, walls, flour, and furniture with changing the materials (foam, fabric, metal, wooden, and plastic), color, and style Acoustima® acoustic panel by Seatup Turkey® products are recommended too.

linear wooden acoustic panels

One of the most commonly used acoustic panels is linear wooden acoustic panels. Without holes, it considered as a reflector but with holes in back it behaves both reflector and absorber to the acoustic wave which makes sound clear and warm at the same time creating a clean linear effect on walls and ceilings across a range of applications, this panel style offers a warm organic finish, ideally suited to use in lecture theatres, meeting rooms and public buildings. linear wooden acoustic panels in their design depend on absorption coefficients that are an average of how absorptive each product is at numerous frequencies, generally at 500 Hz, 1000 Hz, and 2000 Hz. Generally speaking, soft, porous materials will be more absorptive than hard, reflective surfaces.

Standard hardboard is made of wood fibers, usually with the addition of resin, and tempered by coating with a thin layer of linseed oil and baking at a high temperature to polymerize the oil. This provides more water and impact resistance, hardness, rigidity and tensile strength. Hardboard will bend and warp with age and in the presence of moisture, and will sag under heavy weight (the exact weight is based on the dimensions and quality of the hardboard) unless secured to even weight distribution among several mounting points. Wood is sometimes selected for aesthetic reasons. It may be chemically treated for strength and fire-retardant characteristics or turned into plywood first. Also, it may be mounted as a thin strip instead of the squarer shape of panels.

linear wooden acoustic panels can be the acoustic solution for many places and applications. Acoustima® acoustic panel by Seatup Turkey® Linear Wall Panels can be installed either horizontal or vertical. Relating the design in the field, panel width, length and the space between each slat can be adjusted. We can produce any custom sizes.

Acoustima® acoustic panel by Seatup Turkey® offer a wide range of finishing options and can cater to your needs in terms of fire classification, sustainability and appearance. We can also provide architectural joinery items such as custom trim, skirtings and returns, so you can be sure of consistently high quality and a project that runs more smoothly.

Acoustic solution for shopping centers

Acoustic solution for shopping centers

Market, the place which everyone needs it and where we all visit every day Imagine the numbers of people crowded there, this boy shouts to take his order, another woman calls her neighbour by phone to share opinion, group of girls talk some nonsense and for sure do not forget, sellers hoot to attract customers.

However, many smaller arcades have been demolished, replaced with large centers or “malls”.

A shopping mall is a modern term, in which one or more buildings form a complex of shops representing merchandisers with interconnecting walkways that enable customers to walk from unit to unit, by the fact that connecting walkways are not owned by a single proprietor.

The size of shopping centers and malls continued to increase with approximately 220,000 m2, some of them have 8,600 parking spaces  and others have 350,000 m2. Currently, the largest mall in the world is in China with a gross floor area of 892,000 m2.

Shopping centers are frequented by numerous people not only for shopping activities but also for social and leisure purposes. The considerable size of some of the malls, with large circulation spaces, high ceilings and generally a large food court where large numbers of people gather, leads to elevated background noise and reverberation time values, which result in poor speech intelligibility in a noisy space so what is Acoustic solution for shopping centers.

Results of a study in shopping malls with a total area from 12,000 to 72,000 m2 show average RT (reverberation time) values between 1.7 and 3.2 s, and LAeq (sound loudness level) between 67 and 70 dB.

Noise occupational density in all shopping centers, indicating a fairly common acoustic environment for all malls. The level of occupancy noise showed a rather excessive value for acoustic comfort and well-being in shopping centers. Not Sound and noise in shopping malls only by the feeling of discomfort but also for “incompatibility” relatively to speech intelligibility.

When noise is high makes an acoustically unfavorable space, especially if it intensifies in frequency with the highest hearing sensitivity, between 1 and 4 kHz.

Of all the characteristics, the main negatives points for acoustics are number of floors, height and volume; gallery configuration linking the different spaces of the malls assisting in the spread of noise; reduced area of food courts concentrating people and centralizing activities and access; surface coatings with reflective materials (such as ceramic, marble or ceramic tiles) and glass surfaces; little or no application of absorbents materials and systems; noisy machines and equipments, little or nothing acoustically treated; carts without silent bearings and chairs and tables with worn rubber or without them producing noise when dragged. In contrast, the positive characteristics observed in some of the cases studied are: height and volume reduced; spatial configuration like long corridors, with little interaction between the spaces; large food courts so as not to agglomerate people, and consequently the noise. Other favorable characteristics detected that, in the absence, can also be taken as intervention proposals, include: acoustic treatment of the particular noise of machines and equipments through quieter cooling systems/ventilation/others; presence of rubber in the legs of tables and chairs; silent bearings in the carts; and especially lesser application of reflective materials over sound absorptive, for example, perforated panels and/or baffles in the ceiling, porous and fibrous materials in the decorative objects (tissues, cushioned) and on the walls (wood fiberboard agglomerate, etc.), as well as more areas with sofas and carpets. Note that these and many other examples can be considered for proper acoustic corrections.

In general, a minimal careful acoustical design can decrease the average RT up to 1.5 s, increase the average RASTI up to 0.10 and decrease the occupation background noise in 3 dB(A).

Therefore, succinctly: for Acoustic solution for shopping centers to reduce the reverberation of space through the type and shape of the surfaces and volume; increase sound absorption and reduce the effects of noise sources, in order to reduce ambient noise. Sound absorption of the environment is the basis of the best results of the acoustics of shopping centers. All these factors contribute for better speech intelligibility, better quality and comfort of space, consenting users to spend more time in shopping centers.

Moreover, you can see the acoustical solutions in shopping centers in Turkey, Bursa. Since, Bursa is crowded by the modern and acoustically designed shopping centers.

 One of the acoustically designed centers is Sur-Yapı center, this shopping center as photos show has used the MDF wooden panels on the walls in the walkways in the slat shape with a small space between pieces which help in increasing the NRC rating to 0.80-1.0.

there is also MDF wooden suspending ceiling in each floor in combination of two shapes in the plain shape which has NRC approximately 0.46 and the other shape is the slat shape with NRC 0.80, this combination has a role in the Aesthetic and the Acoustic section.

Also, it used the shape of dome in the middle of the shopping center  which helps in reducing the noise by using the resonant cavity method because of  its concave shape to reflect the sound by delay time and this will canceling the echoes in the space, in addition the floor is ceramic that has an acoustically and thermally properties.

And, there are acoustical wooden seats in the halls and walkways give the shopping center a unique view and plays a role in the acoustic solution in the shopping centers.

Most of the shops in this shopping center use the acoustic panels in their shops especially the cafe-book which has the acoustic panel in different shapes.

you can notice special acoustically designed in Suryapı Cinemaximum cinema. its hall cinema has the design of classic Rockwool acoustic panels, its panels is classic Rockwool acoustic panels and seats in the cinema has also acoustical properties helps in reducing the noise

You can read more in detail about the acoustic solutions in cinema in our blog of Acoustima® acoustic panel by Seatup Turkey®:

in Bursa; you can see a different, unique and acoustically design in each shopping center like Carrefour shopping mall; AS merkezi shopping mall ;kent maydanı shopping mall and Özdilek shopping mall.

We live in a noisy world. And shopping is one of our noisy everyday experiences.

There are people who prefer peace and quiet. There are those with hearing problems. Those with a sensitivity to loud noise. There are elders who get stressed out by loud music. There are kids and youngsters whose hearing is at odds when the sound is too loud. In fact, there are tons of people who are not comfortable with loud noise in stores.

Of all the construction requirements which carry a particular project, perhaps the most ignored is Acoustics because the aesthetics almost always tends to overlap. However, these are old approaches that can no long happen. In the long run an acoustically bad space will have fewer customers than others better designed.

All-day Quiet Shopping. Quiet Night. Relaxing Shopping. Hush Night. The name alternatives are many. The core idea is to show empathy and love to all those customers who wish to be able to shop without the blasting, unnerving music.

For Acoustic solution for shopping centers Please, create some room for shoppers who crave a soothing and relaxing shopping experience. You are bound to be financially rewarded for such an inclusive and warm-hearted activity.

Acoustima® acoustic panel by Seatup Turkey® can help you in different, modern, and acoustically designed Acoustic solution for shopping centers. Also, you can see our online catalogue:

Acoustical solutions for hospitals

Noise in hospitals:
Florence Nightingale (1859) said:
“Unnecessary noise, then, is the cruellest absence of care which can be
inflicted either on sick or well “
As you know hospitals must have a controlled sound level and we all maintain on our quietness when we visit a patient. However, there are many noise sources like speakers’ voice or devices, but WHY that is important issue?

According to US National Library of Medicine Critical Care Journal:
The report noted that noise levels in intensive care units ranged from 50 to 75 dBA, with the highest night peak level even reaching 103 dBA (louder than a lawnmower).

The problem of Noise in hospitals can cause calamity effects which strongly
match sick aside from doctors and employees.
Someone who is a doctor says ”We do mistakes because we can’t hear what is said!”
In additional, sleep and restorative periods should be regular for ill people if not then, additional medication required surgical patients when SPL >60dB (sound pressure level) due to Noise in hospitals.
Noise levels in Johns Hopkins Hospital shows Frequency and Neighbourhood Effects on Auditory Perception of Drug Names in Noise (Lambert) that 3.9 million “wrong drug” errors in US retail pharmacies each year.

(e.g., Zyrtec/Zyprexa, Celebrex/Celexa, Toradol/Tapazole), many due to
confusion between similar names confusion.
Acoustima® acoustic panel by Seatup Turkey® provide acoustical solutions for Noise in hospitals involves insulator solutions and acoustic panels which have absorptivity up to 0.9. Some important numbers about Noise in hospitals:
World Health Organization:
– 0.6 sec reverberation time for patient rooms.
– Lmax(A) no more than 40 dB(A).
– Leq of 30 dB(A) in rooms.

ANSI Standard:
– RC(N) values of 25-45 (Room criteria measures have been developed to
evaluate existing background noise levels in rooms).
US EPA:
– Ldn of no more than 45 dB(A).

Different collection of acoustic panels for celling, walls, flour, and furniture
with changing the materials (foam, fabric, metal, wooden, and plastic), color, and style Acoustima® products are recommended too.

SeatUp Turkey® & Acoustima®+902249996707 / +905427196712

Acoustical Solutions for Schools

Can you imagine if there is alot of children in the room how it will be?!!,
or the level of the noise inside and outside the room?!
This noise is one of mainly problems in the schools zones (such as
lecture halls, Auditoriums,gymnasium, multi-purposed rooms, ….etc)
that needs acoustical solution.
In the recent years; Acoustima® acoustic panel by Seatup Turkey®
developed a wide range of acoustical solutions for schools in mean of
helping in the effective education without noise. This acheived when:

1. Reduce the disturbance from background.
2. Make sure the whole school gets proper acoustic treatment.
3. Choose safe products.
   One of the acoustical solutions that Acoustima® offers is colorful, multi-shaped and safety 3D acoustic
   panels that absorb or proof the sound inside and outside the room. As
   well as Seatup Turkey® also offers lecture hall’s seats which is
   acoustically tested. These seats are made from a high-quality fabric
   which has acoustic properties.
   Also, Acoustima® achieves that the gymnisium treated acoustically by installing wooden acoustic panels which controlling heat and sound in the space.

In addition; Acoustima® produced acoustical solutions for Auditorium in the mean of installing acoustic panels on the walls, using acoustical suspending cieling, add acoustical carpets or the most important acoustical solution for schools and for Auditorium escpetaily the Seatup Turkey® also produced are seating solutions.
Seatup Turkey® offers a special series for the Auditorium seat with
acoustical properties,which you can check it from the online cataloge:
https://www.seatupturkey.net/wp-
content/uploads/2018/09/Seatup_Turkey_Kat_Auditorium-Conference-
Hall.pdf
Finally, if you acheive this factors there will be many benefits for both
students and teachers just like: Greater understanding of speech, Lower
stress levels and blood pressure, Better reading ability and test results for
students and Less voice problems for teachers.
if you are intersting in providing a comfotable enviroment helps in the
ideal effictive education without any noise, you just have to call us:

SeatUp Turkey® & Acoustima®+902249996707 / +905427196712

Baffle Acoustic Panel:

Hearing loss is a serious issue in today’s society. From exposure through work, recreation and household chores, we have got dangerous noises all around us, so that limiting exposure to loud noises is very important.

But what is the tool to get a convenient, cosy, relaxed, and comfortable place?

It does not matter what kind of room it is, from small kitchens in houses to huge halls in factories or whatever.

Acoustima® acoustic panel by Seatup Turkey®, as usual, provide a fundamental tool of noise mitigation, Sound baffle.

Sound baffle is construction or device which reduces the strength (level) of sound, the practice of minimizing noise pollution or reverberation. An important type of sound baffle is the noise barrier constructed along highways to reduce sound levels at properties in the vicinity. Sound baffles are also applied to walls and ceilings in building interiors to absorb sound energy and thus lessen reverberation.

Since the early 1900s, scientists have been aware of the utility of certain types of interior coatings or baffles to improve the acoustics of concert halls, theaters, conference rooms and other spaces where sound quality is important.

Sound baffle is also used in speaker cabinets to absorb energy from the pressure created by the speakers, thus reducing cabinet resonance.

Sound baffle is installed in a room to improve the speech ineligibility. Sound baffle is an effective, economical acoustic treatment to increase speech intelligibility and sound clarity.

Since the product installs vertically, both sides have exposure to sound. With an increase in surface area, there is an increase in its ability to reduce reverberation.

Acoustima® acoustic panel by Seatup Turkey®, designs a collection Special thicknesses from 20mm to 50mm and surface and color options from 15mmx30mm to 60cmx240cm and 120cmx240cm in custom sizes.

Acoustical Canopy for indoor System by Acoustima®

Nowadays, a lot of building consist a thermally activated building system such as cooling system which make your room has a maintained volume. So; in your case the best acoustical solution which not effect on the building cooling system and the room volume is the ACOUSTICAL CANOPY for indoor system.

The acoustical canopy panel is one of the acoustical panels that Acoustima® acoustic panel by Seatup Turkey® produces in many shapes (circle; rectangle; hexagon, …etc.) that saves the area in the office and solve the acoustical problems in indoor system.

Acoustima® created the canopy acoustic panels by hanging the products which its core material is a mineral wool, the mineral wool plays an important role in the system, this material has high acoustical
properties, and this core material covered with high quality fabric which gives an Aesthetic shape.

On the other hand, Acoustima® offers acoustical canopy panel as a unique, colorful and surprising design and also help to
reduce the noise problem in indoor crowded places.
Briefly, Acoustima® give you a chance by helping you to produce your own shape.

ACOUSTICS IN CONCERT HALLS AND MUSIC ROOMS

Whether it is a large concert hall or a small music room in the school, both need an appropriate acoustic solution.

An appropriate acoustic solution that will help to create an atmosphere in the hall for the music,

Such an atmosphere can be only provides by using the correct acoustic panels,

There must be a combination of panels that receive the sound and swallows to sound in order to avoid echo ,

And panels that serve as a sound blockers to prevent the sound from escaping from the room and also to block noises

From outside the hall that may interfere with the music performed in the hall.

We can not tell you that we are experts in design and design acoustics,

For this what you need to do is to consult with A professional acoustic engineer,

But we are certainly the right address for the production of professional acoustic panels,

We produce panels that absorbs sound and panels that block sound.

All of our panels are meticulously designed for the smallest details and meet all the strict standards of fire resistance,

All our panels have passed an acoustic test in the laboratory and have been found to be particularly effective.

We’d love to share more information with you, just contact us and we’ll be happy to help.

+905427196712 export@acoustima.com

The best materials for acoustic panels

There is no doubt that the top Acoustic material in the list of the best materials for Acoustic panels is the Rockwool ,

Rockwool provides the highest level of acoustics at a density of about 110 or at his maximum density of 150.

Another possible material as an alternative to Rockwool for those who have allergy to it, can be the Anti flame

injected foam that is the same material which we use for the producing of our Auditorium seating.

Apart from these two materials Rock wool and injected foam, all other materials in the market are problematic

because either they do not provide the maximum acoustic quality or because they allergic and pollutants for human

and the environment.

Therefore we will recommend our panels made of rockwool or panels made of injected foam in molds.

The field of wooden Acoustic panels it is another topic, it is another area in itself and should not be compared to the

Acoustic fabric panels , since this is a completely different school.

Most of the customers who are looking for wooden panels will not hurry to give up the wooden in favor of fabric

Acoustic panels, the wood has something beyond the high acoustics it gives it is also a design choice which is very

different from the choice of Acoustic fabric panels .

To install panels from the fabric does not require much experience, and can be glued to the wall with silicone glue,

however wooden panels require professional installation with pre-prepared wall profile.

You may choose Acoustic wooden paneling or Acoustic fabric paneling made rock wool or made injected foam in molds.

In both cases we will support you to with your choice and will help you and produce for you what you are looking for.

Just get a contact with us. export@acoustima.com +905427196712

Rockwool panels by Acoustima®

Acoustics of your auditorium

The acoustics in the auditorium are not only the result of the acoustic panels you are installing in the auditorium.

Another very important measure of acoustics in the auditorium is the acoustics level of the seats themselves.

SeatUpTurkey® produces auditorium seating which have been acoustically tested . How do we produce an

Auditorium seats with high acoustics? We use a very high quality upholstery fabric, a fabric that has acoustic

properties.

The polyurethane that we pour in the molds ourselves for producing the seats is of a high acoustic quality.

Even we produce Acoustic panels that are made of the same material high acoustic quality polyurethane which has

been tested acoustic test.

So when you’re looking for acoustic seats for your auditorium, only SeatUpTurkey®  manufacturing Auditorium

seating with good and recommended acoustic level for your Auditorium hall.

We can guarantee you that high quality Auditorium seating made by SeatUpTurkey® will do the right Acoustic effect

in your Auditorium hall.

The acoustics in the Auditorium are extremely important, As an auditorium without good acoustics is simply making

joke of work! After all, the whole idea of ​​Auditorium Hall is to allow a comfortable space for speaking and playing

parts of speech or music, so the acoustics must be at the highest level and without compromise.

SeatUpTurkey® with you for the solution!

Export@seatupturkey.net +905427196712

EG900 model by seatupturkey Export@seatupturkey.net +905427196712