One newspaper that I had worked for, when they built a new plant, considered
the noise problem in the design of the plant. The created a "quite room"
which the controls were located. The doors to the press units were sound
proof. The folder was also in a sound proof enclosure. You still heard the
waka waka (what we called folder noise in college) but I think it helps.
Every press person wore hearing protection despite these controls. I've
never measure or read this but from experience I feel newspaper press noise
is louder than web which is louder than sheetfed. I also think as new
newspaper plants are built, the companies that have safety integrated into
their culture will consider this and design it into the plant.