Development Of Vehicle Acoustics: Notes
Throughout the history of the automobile, noises have been decreased thus creating a higher level of comfort in the vehicle. Other properties have also improved (stability, climate control, ergonomics, impermeability, safety, corrosion protection, mechanical performance, etc.).
In addition to the reduction of the amount of noises and noise levels, the noises related to dynamic, mechanical and suspension operation were also insulated or they were blocked from being heard from inside the vehicle.
Because of these advances, noise insulation has advanced to a level that was unimaginable several decades ago.
All of this was attainable not only by preventing the generation of noises, but also because of noise and vibration damping elements, that were installed in areas previously analyzed to prevent noise transfer.