Abstract
Attention is drawn to the importance that the problem of noise nuisance inside cars has recently attained. The main experimental research methods are surveyed: sound level meters, average level meters, amplitude analysers, frequency analysers. A description is given of the main acoustic vibrations present in a running car. These can be divided into two groups: vibrations forced by the irregular rotation of various parts of the vehicle, and resonance vibrations of its structures. A fully automatic procedure for the frequency analysis of sound or mechanical vibrations is then briefly described. Lastly, some frequency spectra referring to noise inside running cars are discussed, which show the effects of the type of road, of speed, of microphone position, of type of car and tyre.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call