The VPL-HW15 is about average (or a little better) at audible noise as well. The Sony claims 22 db in eco-mode (low lamp power), which is better than most projectors. Sony does not provide a spec for full power operation, but it probably isn't more than an extra 5 or 6 db. The noisier home theater projectors at full power, tend to be up in the 31-34 db range, so this is a sonically quieter unit than many. Even for those who are the most noise adverse should be able to live with the HW15 at full power, and certainly, at low power.