ITS Blog - publications illustrating in-house works carried out in terms of Research and Development in acoustics
Design calculations with SILDIS® software for mufflers with perforated pipes for gas flow noise reduction
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Use of mufflers including perforated pipes to reduce gas flow noise
Mufflers including perforated pipes are used in different contexts for reducing gas flow noise (depending on the application: at ambient or variable temperature e.g. very high):
- compressed air networks (at suction and/or discharge)
- exhaust lines from thermal engines >depressurization vents (e.g. steam)
It is the passage of the gas flow through orifices (e.g. such as those resulting from drilling work on the...
Acoustical sizing calculations for panels with millimetric or sub-millimetric perforations for soundproofing
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Main applications of perforated acoustic panels
It is well known that perforated panels can be used as constituents of products or constructive systems for soundproofing:
- with regard to sound absorption: for controlling the reverberation of premises (e.g. speaking and listening rooms of all kinds [1], catering areas, sports halls, offices - among which: open spaces - and industrial premises), in particular in the form of wall panels or ceiling elements or under-roof constructions...
Prediction of noise emissions from buildings and other constructions with Module 10 of the acoustic calculation software SILDIS®
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The prediction of sound emissions from buildings and other constructions with Module 10 of the acoustic calculation software SILDIS® is useful when the distance at which one wishes to calculate the sound pressure level (resulting from noise transmission through walls and/or from the propagation of sounds emitted by noisy hardware installed outside, e.g. leaning against a wall or placed on a roof) is not small enough, when compared to the size of the sound sources, for them to be considered as...
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