During the last two decades there has been much interest in the effects of infrasound on people. This is partly due to assessments made by some scientists that infrasound could cause side-effects such as intestinal irritations,throbbing in the head,nervous breakdowns,certain allergies and other unpleasant phenomena of modern life found in industrial cities. With the possible effects on road safety this paper describes measurements of infrasound intensity in European passenger cars. It was found that infrasonic sound pressure levels (ISPL) were proportional to vehicle speed, window opening and vehicle size. Also driving with a fitted roof rack tended to increase ISPL by as much as 20 dB. It was also found that under most adverse driving conditions ISPL never exceeded 110 dB which is below the threshold to degrade human performance. It seems therefore that the original significance placed on infrasound in cars was overestimated.


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    Title :

    An Investigation into the Significance of Infrasound in some Passenger Cars


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE Noise and Vibration Conference and Exposition ; 1989



    Publication date :

    1989-05-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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