At 37 decibels, the IN3136a has a fairly loud noise level compared to most of the other similar spec projectors that were released more than two years ago. The quietest noise level of multimedia projectors of a comparable age and spec to this data projector is 33dB, the loudest is 40dB, and the average noise level is 36dB.
Other 37dB noise level multimedia projectors currently available that you might want to look at include cheaper multimedia projectors such as the Infocus IN3134a (£512.99).
Other projectors with a louder noise level that you might want to look at include the Optoma FX5200 (34dB) which is also cheaper.
What does "noise level" mean?