At 37 decibels, the Epson 1284 has a quite loud noise level compared to most of the other projectors of this type and age. 15000:1 contrast ratio data projectors that have been around for a similar time to this data projector have noise levels of between 29dB and 39dB, and the average noise level is 35dB.
It may also be worth also looking at one of the alternative 37dB noise level projectors currently available including the VS345 (£372.66), or the EB-U32 (£574.91) both from Epson which and both of have better reviews.
Projectors with a louder noise level that might be worth considering include the Epson EH-TW570 (£431.73) (37dB).
What does "noise level" mean?