This paper explains how vehicle testers' subjective impressions of in-car noise quality are being checked scientifically. During the last two years, the Austrian engineering company AVL has been developing a new software tool, AVL-Noise Quality Map, to evaluate vehicle interior noise quality objectively. The software enables easy assessment of noise quality parameters, definition of targets, and effective implementation of the required noise quality in the design and development process of the vehicle. In addition, assessment time is reduced by a factor of more than ten, and the subjective element of the assessment is removed. The package even includes intercultural differences in noise quality perception in different world vehicle markets. The software development had three main stages: (1) the subjective evaluation of car interior noise quality in various ways, including quality of assessors and assessment procedures, to obtain a large carefully optimised subjective database; (2) the use of this database as a basis for the analytical description of interior noise quality by objective parameters, using regression analysis; and (3) establishing a software procedure, based on these results, to calculate interior noise quality in real time. The paper gives some details of these steps, and includes several charts.

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  • Authors:
    • BRANDL, F K
  • Publication Date: 1999-9


  • English

Media Info

  • Pagination: p. 84-5,87-8,90
  • Serial:
    • Volume: 24
    • Issue Number: 8
    • Publisher: Institution of Mechanical Engineers
    • ISSN: 0307-6490

Subject/Index Terms

Filing Info

  • Accession Number: 00779155
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 7 1999 12:00AM