sentences:  Structure-borne noise is attenuated by isolation, while airborne noise is reduced by absorption or through the use of barrier materials.Vibrations are sensed at the steering wheel, the seat, armrests, or the floor and pedals.Some problems are sensed visually - such as the vibration of the rear-view mirror or header rail on open-topped cars
  
  NVH can be tonal such as engine noise, or broadband, such as road noise or wind noise, normally.