If the noise is biased towards the higher frequencies in the spectrum then we may have process or flow problem like possible cavitation which may be further confirmed by high acceleration measurement or filtered acceleration measurement on the pump body on the delivery side.
Compressors that don t raise the noise floor.
Even so the noise level will often increase to some extent but this suppression helps to prevent the noise level from rising too much.
It sounds like when you ground it with your body it goes away which is normal in my experience.
You can cover the compressor s motor directly with the soundproofing material instead.
Compressors raise the noise floor and make any noise already there more noticeable.
Most air compressors operate from 40db to 100db which is a huge range roughly a quiet office to a lawnmower.
Compressor noise floor question.
Mine does the noise thing too and goes away when you ground the guitar.
Cover the air compressor motor with soundproofing material.
Assuming you don t want noise rising in pauses but it happens move the slider to right though it would be better to get the noise.
If you don t feel like building a wooden box and covering it with soundproofing material don t worry.
Help for audacity 2 x x on macos.
In a spectrum if the entire noise floor is raised it is possible that we have a situation of extreme bearing wear.
Studies have shown that loud noises can lower morale limit communication and harm productivity.
This will produce weaker results but it will still make a noticeable difference.