If absorbent materials are applied directly to a hard surface, the absorption is limited to the high notes. The degree of absorption is classified as low-absorbing with Class E. For effective pleasant room acoustics, however, the absorption of the deep tones is required!
Good sound absorption requires a distance (cavity) between absorber and a sound-hard surface. Physics)
The greater the distance, the more the deep tones are absorbed.
In the adjacent graphic the measured values are shown at different distances from 50mm to 200mm.
In order for a room acoustic measure to be calculated and assessed realistically, well-founded acoustic physical basic knowledge and practical experience is appropriate. In particular, the initial values of reality must be determined accordingly. For sensitive areas, the measurement should be carried out professionally by an acoustic expert. Alternatively, at least a provisional measurement should be performed with a phone app repeatedly. The provisional measurement serves only as a guideline for the selection of the room materials and their absorption coefficients in the acoustic calculator. Basically, any calculation without professional measurements of the initial situation is hypothetical!
Low frequencies are absorbed differently than high frequencies. Glass surfaces (Windows) or a normal office cabinet made of chipboard in different thicknesses, when you hit the resonance of the deep tones, can act for the low frequencies absorbing. However, a correct calculation is hardly possible due to the lack of measured data of the objects. On the basis of a measurement, special depth absorbers (vibrating resonators) need to be specifically set.
The calculations are based on measured data from objects and materials. Some of these are listed in the DIN 18041 exemplary. Others are taken from various sources for their correctness and conformity with the actual existing object or material there is no guarantee.
Area is important-small elements, for example, are simply overlooked by lower frequencies due to the long wavelength. Even with a-class absorbers, an adequately large absorbing surface is required in relation to the size of the room. In communication rooms, absorbers on the ceiling are sparingly and consciously dealt with. Here is more of a reflection desired!
Vital-Office therefore recommends the use of flexible acoustically effective products. Acoustic products that are divisible and easy to install and can be easily removed if necessary. This makes the investment in acoustically effective products more sustainable, more economical and more effective. For example, the VitAcoustic 3d frames. The VitAcoustic 3d frames have additional positive acoustic properties (among others on the lower frequencies) through the nested bamboo solid wood frames.
P.S. in the table "VO01" of the acoustic calculator, example values for a conference room and in VO02 for a club room are entered according to the adjacent 360 degree panorama picture.
Contributors to the Project acoustic calculator:
Extension and addition of the material and object database, in particular measured values of standard furnishings or entire exemplary facilities by room size.
Extension by further calculation formulas (currently only Sabine was chosen) and their comparative comparison.
The DIN 18041 regulates, among other things, the requirements for room acoustics for Office, conference and classroom rooms and applies to rooms with a room volume up to about 5 000 m3, it sets the room acoustic requirements, recommendations and planning guidelines for securing the Audibility Primarily for voice communication in offices and conference rooms, as well as schools and classrooms, including the necessary acoustic, sound-absorbing measures. Different criteria are defined for different types of use and different criteria for acoustic measures are proposed.
Communication Rooms (Conference, Lecture, training and instruction) is assigned to room Group A.
Office Space (Einpersonenbüro, multi-person Office, Group Office and Large Office), as well as break rooms etc. are assigned to room Group B.
What you hear is often different from what you see. Acoustically good room design is not so easy. A consultant should bring well-founded basic knowledge and practical experience. All shown and advertising-strongly published absorption values are to be evaluated in relation to the application in the room and the processing of the product. For example, a huge difference arises whether the sound absorbing material is directly applied to a hard surface or is mounted at a distance.
In this respect, the thickness of the material also plays a role. However, for the most part only in the mass as it increases the distance to the hard surface. In practical terms, this means that a thinner material achieves the same sound absorption when it is mounted at a distance. Depending on the application, a cost-benefit comparison between a. thick material and B. Thinner material with substructure makes sense.
Für die meisten von uns entfacht sich die Begeisterung erst dann, wenn man ein fertiges Originalprodukt in den Händen hält und es mit all seinen Sinnen erleben kann.
Deshalb möchten wir Ihnen heute auch die Gelegenheit geben, ein vitAcoustic Frame Set in sieben möglichen Farben bei uns für einen attraktiven Kennenlern-Preis zu erwerben. Reservieren Sie dem Rahmenset ein kleines Wandstück in Ihrem Büro, Ihrer Location oder zuhause und lassen Sie Qualität, Farbe und Funktionalität dieses ansprechenden Produkts auf sich und Ihre Kunden, Kollegen und Freunde wirken. Reservieren Sie Ihr Frameset mit Ihren Farben zum Super Kennenlernpreis am Besten noch heute. Das Angebot ist zeitlich beschränkt.
VitAcoustic polyethylene material is free of pollutants without the supply of odour and emission. They are friendly to the skin and airways and can therefore be used completely harmlessly in areas where babies and children play and learn. In combination with an effective sound absorption, one sets the course for a healthy, stress-free and concentration-enhancing development.
Our quality acoustic products are produced from recycled Kunsstoffflaschen and their further processing to textile fibres, which are very robust and durable. We make use of what already exists and are instrumental in helping to save the environment and nature. As such, it can easily be fed back into the recycling process as a recyclable product--> The cycle thus closes.
Highly absorbent (details in the application must be observed! See Test curves)
B1 Brand Class
Without ingredients, without glues, without dyes.. Zero VOC.. Good for allergy sufferers
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Vital-Office Shanghai Co.,Ltd
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上海新饰力办公用品有限公司| 德国品质|专业服务| 上海市长宁区 长宁路1515号1416室
(Wang Lei) +86 186 2139 5356
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