Across all the projectors that came out around the same time as this projector the noise levels range from 29dB to 39dB. At 37 decibels, the Epson EB-X31 has a quite loud noise level compared to most of the other similar spec projectors that were released one year ago.
We compared this data projector to all the other 37dB noise level multimedia projectors and we think a cheaper projector such as the Epson VS240 (£289.31) or you might consider a better rated projector such as the Epson VS345 (£369.43) are also worth considering.
If you don't mind having a louder noise level then you might want to consider the Epson VS340 (£345.48) (37dB).
What does "noise level" mean?