A large-display sound-level meter has been constructed as an experiment in public education. The indicator is an array of lights so arranged that the sound level produced by a source is displayed as an illuminated column. In a roadside installation, motorists see a thermometer-like display ahead and can compare the level produced by their own vehicles with the maximum level permitted by legislation, as shown by vehicle silhouettes. The device registers from 70-100 dBA in 2-dBA steps with an accuracy approximately equal to one increment of the scale.

  • Availability:
  • Corporate Authors:

    Acoustical Society of America

    335 East 45th Street
    New York, NY  United States  10017
  • Authors:
    • Brammer, A J
    • Toole, F E
  • Publication Date: 1972-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00261207
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 22 1974 12:00AM