Overview of possibilities for sound insulation


What is sound? Why does sound insulation play a major role in designing living and working spaces? How does sound insulation work? Optimal soundproofing of the rooms, no matter whether they are lived and / or worked in, ensures that the everyday background noise remains outside – and you hear neither the street noise nor the neighbors. This leaves environmental pollution out, because nothing else is noise that puts you under stress and at worst makes you sick. We will show you how sound insulation works and which structural options exist for combining sound insulation with thermal insulation. New insulation wanted? Request free quotations from experts in your area Development and propagation of airborne and structure-borne noise The optimized flow resistance and the structured surface of the SONATECH® PUR Pyramid create a noise protection product with excellent sound insulation. (Photo: SONATECH GmbH + Co. KG) Even inside the apartment, the sound insulation prevents noise from penetrating from one room to the next. Thus, individual members of the family or shared apartment or colleagues can find peace and security in their rooms and at the same time privacy. Just as the optimal sound insulation provides a quiet from the outside, but it also prevents the noise that you make yourself, to penetrate to the room and apartment neighbors. But to understand how sound works, you have to know how sound propagates. Physically speaking, sound, caused by human voices, live or from radio / TV, or machines is a wave that propagates within a medium. The medium most common to us is air (airborne sound), although sound also propagates through water or through solid objects (structure-borne sound). Producers of sound are in any case vibrating bodies. If, for example, one strokes the string of a violin with the bow, one puts it into vibrations. The string causes the surrounding air to vibrate – a wave is created. This is done by compressing the air from the vibrating side at the point, which at the same time increases the air pressure prevailing there. Subsequently, this air mass spreads with high pressure, which is sometimes even noticeable, in all directions. She does that at a speed of 330 meters per second, which corresponds to 1,188 kilometers per hour. This sound wave penetrates to our ear, where it meets the eardrum and is converted into a signal that is transmitted to the brain – with the result that we hear the sound of the violin. The physicists are very different between sound and sound. A sound is therefore a so-called sound event, which consists of a perfect wave. An entire piece of music means that this physical process happens several times in succession, or in other words, a whole series of waves brush past us. At the same time a strong, sometimes less compressed (compressed) layer of air spreads within the air. If you could see the particles of air, you would get an image similar to that of concentric circles in the water after throwing a stone into it. Measuring the effectiveness of soundproofing measures The most important characteristics of sound are the number of oscillations per second (Hertz, Hz), ie its frequency, and its volume (also called sound pressure or sound level), which is expressed in decibels (dB). The effectiveness of a sound insulation is therefore measured in these units. What you should know: When perceiving sound, there is the phenomenon (ratio of volume scale to volume sensation) that an increase in the volume of a noise from 60 decibels by just 10 decibels to 70 decibels is already perceived as being twice as loud. The quiet talk of the neighbor on the phone can even be heard as doubly loud, if he only “turns up” his voice by 3 decibels. Conversely, this means that even a sound insulation that damps only 10 decibels of noise is perceived as a pleasant halving of noise. Compare insulation prices here and request 5 free expert offers! Classification and Guidelines for Structural Sound Insulation From the dry theory, it is now directly in the practice. Effective sound insulation involves several factors. These include: Insulation of the building interior against external noiseDiminders of sound transmission between the rooms in the buildingPreventing sound transmission out of the building into the environmentCreating a good “acoustic climate” (especially in large rooms) Points 1 to 3 belong to the topic of building acoustics, point 4 on the subject of room acoustics. The standard DIN 4109 “Sound insulation in building construction” forms the applicable framework in Germany for sound insulation in building construction. It regulates the required minimum sound insulation, its supplement 2 the requirements for increased sound insulation. The rules of the Association of German Engineers 4100, in short: VDI Directive, shows three sound insulation levels for …

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