I had a Blackburn Mag trainer, noisiest thing on the planet. I now have a Cyclops Fluid, much quieter. I can watch TV at normal volume now.

A couple of things:

1. Use a completely slick tire, no sipes. Even the smallest amount of tread will make noise on a trainer.

2. Get a mat. The inudstrial mats they use for people who stand all day long in their jobs are great. Or just some Thinsulate from a camping store will also work.