Answer: Noise with an average sound pressure level exceeding 90dB (A) is considered to be detrimental to hearing, and the degree of harm depends on the noise intensity and the time of exposure. The noise generated by the air compressor mainly consists of three parts: suction port noise, noise radiated from the surface of the air compressor, and noise emitted from the piping system. The indoor noise level depends on the sound emission of all indoor sound sources and the acoustic properties of the room itself, that is, the sound absorption of the walls, floors and ceilings. For the total sound pressure level, the noise of the air compressor is not always the most important factor, and the noise generated by the prime mover must also be considered.
