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.
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