What range of wood do we have when choosing the inner linings of our acoustic wood ceilings? When you take on wood projects including acoustic conditioning in a given location, there are technical factors and the acoustic material that could affect the aesthetics of your work. However, this is not the case. There is an extensive range of natural finishes in wood acoustic panels used for inner linings inwood walls and wood ceilings. When you talk about natural wood, acoustic wood ceilings can be: . - MAPLE acoustic wood ceilings: maple wood is white with yellowish hues. It is used for inner linings and in the furniture manufacturing. - BEECH acoustic wood ceilings: beech wood is the most widespread in the Western decoration. It is yellowish brown, with a uniform texture. It is highly appreciated in carpentry and used to manufacture inner liningsand wood ceilings. - OAK acoustic wood ceilings: oak wood is magnificent, with brown hues and a marked grain. It is hard, heavy, and resistant to moisture —reason why it was the basic material of choice for shipbuilding. Its qualities have given it a place of honour in the world of construction, cabinetmaking and woodworking. - CHERRY acoustic wood ceilings: cherry wood is a red hardwood that is widely used for laminated wood panels and to manufacture furniture. - WENGE acoustic wood ceilings: Wenge is an African tropical wood, heavy, with a marked grain and very hard. It is highly appreciated in the world of furniture and for inner linings because of its typical dark hues that range from chocolate brown to ash grey. . If you liked this post, you may also be interested in: . - 3 Good reasons to use wood panelling in enclosed public spaces - 12 Wood ceilings by Spigogroup - Wood ceilings: over 30 different models of sound-absorbent wood panels
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Acoustic conditioning with wood acoustic panels is not the same in an auditorium as in a bar. Every space has its own permissible noise level. The acoustic conditioning of a room directly affects the level of noise experienced inside. When the level of noise produced by a source in an outer space is evaluated, only the direct sound produced by that source is taken into account. However, when you study this within an interior architectural space, in addition to direct sound, you have to take into account the sounds caused by the reverberation of the first direct sound. Therefore, the acoustic conditioning carried out in rooms and spaces by carefully studying where the acoustic panels made of sound-absorbing wood, are to go in order to control the reverberation of a room, is key in maintaining a space within acceptable limits for noise levels. But what are those permissible noise limits? Each type of space has different ranges of permissible noise and, although it is always recommended to be advised by acoustic consultants and experts in acoustic material, permissible noise levels for each type of room are approximately as follows: Acoustic conditioning of CHURCHES AND SCHOOLS Type of Space Margin dBa MarginNC Sanctuaries 25-35 20-30 Libraries, classrooms 35-45 30-40 Recreation rooms, hallways 40-55 35-50 Laboratories 40-50 35-45 Kitchens 45-55 40-50 Acoustic conditioning of PUBLIC BUILDINGS Type of Space Margin dBa MarginNC Libraries and museums 35-45 30-40 Public offices, banks 40-50 35-45 Washbasins and toilets 45-55 40-50 Acoustic conditioning of RESTAURANTS Type of Space Margin dBa MarginNC Restaurants 40-50 35-45 Cocktail lounges 40-55 35-50 Night clubs 40-55 35-45 Cafes 45-55 40-50 Acoustic conditioning of SHOPS Type of Space Margin dBa MarginNC Department stores 40-50 35-45 Supermarkets 45-55 40-50 Small shops 45-55 40-50 Acoustic conditioning of SPORTS Type of Space Margin dBa MarginNC Coliseums 35-45 30-40 Bowling alleys, gyms 40-50 35-45 Swimming pools 45-60 40-55 Acoustic conditioning of TRANSPORT BUILDINGS Type of Space Margin dBa MarginNC Ticket offices 35-45 30-40 Lobbies and waiting rooms 35-45 30-40 Acoustic conditioning of HOUSING AND RESIDENTIAL Type of Space Margin dBa MarginNC Suburban private dwellings 25-35 20-30 Urban private dwellings 30-40 25-35 Acoustic conditioning of HOTELS Type of Space Margin dBa MarginNC Rooms 35-45 30-40 Dance halls 35-45 30-40 Lobbies and corridors 40-50 35-45 Garages 45-55 40-50 Kitchens and laundries 45-55 40-50 Acoustic conditioning of HOSPITALS AND CLINICS Type of Space Margin dBa MarginNC Private rooms 30-40 25-35 Operating rooms 35-45 30-40 Laboratories 40-50 35-45 Washbasins and toilets 45-55 40-50 Acoustic conditioning of OFFICES Type of Space Margin dBa MarginNC Board rooms 25-35 20-30 Meeting rooms 30-40 25-35 Executive offices 35-45 30-40 Reception rooms 35-50 30-45 General offices 40-55 35-50 Halls 40-55 35-50 Computer rooms 45-65 40-60 Acoustic conditioning of AUDITORIUMS Type of Space Margin dBa MarginNC Concert and opera halls 35-45 30-40 Recording studios 25-35 20-25 Theatres 30-40 25-30 Movie theatres, TV studios 35-45 30-35 Amphitheatres 35-45 30-35 Meeting rooms 35-45 30-35 Halls 40-50 35-45 SOURCE: “Acústica para la Arquitectura” If you liked this post, you may also be interested in: - What will future wood acoustic panels be like? - Wood acoustic ceilings and acoustic panels: How does sound absorption work? - Wood acoustic ceilings and acoustic panels: Definition of noise and its intensities
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When taking on the acoustic conditioning of a room with acoustic panels made of sound-absorbent wood one needs to know what sound, noise and reverberation has to be dealt with. In acoustic conditioning jobs, one can meet different acoustic situations and, depending on the types of noise present you will have to decide what acoustic panels and acoustic material is ideal to achieve the desired acoustic conditioning and/or insulation. These are the types of noise that one can find, and that our expert in acoustics should assess and study before starting acoustic conditioning work: . - Background noise: It is the noise that surrounds us, associated with the immediate environment which normally consists of different sounds from many sources that can be close by or further away. - Random noise: It is a fluctuating amount, whose instantaneous amplitudes appear as a function of time, according to a (Gaussian) distribution. - White noise: It is one that has an equal amount of energy across the entire frequency band, in other words, constant sound pressure levels over a wide range of frequencies. - Constant continuous noise: It is one whose average sound pressure level measured in octave bands does not fluctuate over time. - Constant intermittent noise: Like the previous one but fluctuating moderately over time. - Periodically fluctuating noise: It is similar to continuous noise but fluctuates periodically over time. - Non-periodic fluctuating noise: It is similar to the previous ones but with longer, non-periodic fluctuations. - Repetitive pulsating noise: It is a noise that comes in similar repeated pulses. - Simple pulsating noise: It is a noise that comes in isolated pulses. - Pink noise: It is the one in which all components provide the same subjective level, i.e. it is white noise but with a slope of –3 DB. . If you liked this post, you may also be interested in: . - Acoustic conditioning with sound-absorbent wood panels that are hung like paintings - Acoustic conditioning: 5 rooms where it is necessary to use acoustic panels - The need for acoustic conditioning with inner linings made with wood panels in libraries, museums, and cultural centres . Author Photo: Kid Clutch - Graf Spee /// Licencia Creative Commons
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We use acoustic panels made of sound-absorbent wood for the acoustic conditioning of rooms to control reverberation and avoid annoying noises, but... What is noise really? What intensity can it have? When it comes to defining noise there is a more technical, objective definition and a more subjective definition of noise. Objectively noise is the sound that presents a level of annoying sound pressure to the human ear. In fact, part of existing acoustic material (such as soundproof doors or acoustic doors) is intended precisely for sound insulation, i.e., to prevent noises or sounds with an annoying sound pressure level from entering a room. On the other hand, there is a more subjective definition of noise, namely any undesired sound, including, for example, the sound produced by acoustic reverberation. This is when acoustic ceilings and acoustic panels made sound-absorbent wood used for controlling reverberation and acoustic conditioning of rooms and spaces. What intensities of noise exist which should be taken into account for the insulation and acoustic conditioning of a room? According to the sound pressure level we can determine 3 noise intensities: . - High noise intensity (noise level > 90 decibels), which produces pain and hearing loss. - Intermediate noise intensity (noise level between 40 decibels and 90 dB), which can be withstood but annoying. - Low noise intensity (noise level < 40 decibels), do not produce physical disorders, but yes they can be bothersome psychologically. . If you liked this post, you may also be interested in: . - Acoustic panels, acoustic ceilings and the communicative process in schools and universities - Acoustic doors or soundproof doors, what are they? What are these technical doors for? - Wood acoustic ceilings and acoustic panels: How does sound absorption work?
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