In so doing,
noise control strategies have been pursued in the "Quest for Silence" - the notion that good acoustics are achieved when the sound levels in a space are as low as possible, with zero being the best.
It also gives an indication of food and drink processes associated with high noise levels recorded at these processes, sets out control measures to prevent noise exposure, sets out 60
noise control solutions, which have been found to work successfully for 10 of the noisiest processes and covers the legal requirements.
Toledo, Ohio-based Owens Corning also targets noise with its QuietZone
Noise Control System, an extensive line of offerings that include fiberglass duct products, acoustic floor mats, as well as acoustic batts.
thick solid wood flooring, WallWood 2-ft by 8-ft veneers and Pyramid acoustical panels and barrier
noise control materials for media rooms.
Volvo's licensing rights are exercised now by one of its contract molders, but its pending programs are said to include LFT skid and underbody plates and
noise control applications.
It achieves a reduction in vent noise by employing five, key
noise control techniques: multistage pressure reduction, reduced acoustical conversion efficiency of each stage, frequency spectrum shift, exit jet independence, and velocity management.
The "active
noise control" technology is especially effective when vehicles are running on bumpy tracks in the countryside or ill-maintained roads, the companies said.
In 1972, Congress passed the
Noise Control Act, which put the Environmental Protection Agency (EPA) in charge of the issue.
Indeed,
noise control has been a community concern for centuries.
With numerous "hot issues to consider, the Energy, Environment, and Natural Resources (EENR) Policy Committee whittled their list to a still heavy agenda of six topics for study during 1996: energy policy, stormwater, source water protection, sustainable development, nuclear waste transportation, and airport and transportation
noise control.