If this indicator

13.04.2017 | комментариев 0 | раздел: Стены

If the noise level rises above 40 dB, then a person is already beginning to feel discomfort, although he is also able to endure extraneous sounds with a decent. In modern apartments, the intensity of noise is about 50 dB. If this indicator rises to 80 dB, there can be absolutely no talk of any comfort.

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