Rattle noise produced in the vehicle interior due to broadband excitation by road irregularities is a major concern with respect to driving comfort, and therefore has become one of the most important topics of acoustic development in recent years. A quantification, i.e. measurement of this rattle noise is of fundamental importance for systematic development work and production control. Common noise level measurements (dB, dBA, etc.) do not represent the rattle character in the vehicle interior as revealed during initial investigations. To overcome this problem, and to substitute the subjective assessment with a combination of measurable parameters, the psycho-acoustic software AVL-EAR was applied to create an Interior Rattle Quality Index. Based on more than 40 different vehicles that have been subjectively assessed by approximately 70 test persons, the index was generated by means of multiple pair comparisons and statistics on measurement data. The index correlated appropriately with the subjective rattle impression, with correlation coefficients of about R = 0,88 for the individual vehicle categories.


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    Title :

    The creation of a car interior noise quality index for the evaluation of rattle phenomena


    Additional title:

    Entwicklung eines Geräuschqualitätsindex für das Fahrzeuginnere zur Untersuchung von Rattererscheinungen




    Publication date :

    1997


    Size :

    6 Seiten, 8 Bilder, 4 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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