THE KINEMATIC SOUND SCREEN: AN EFFECTIVE SOLUTION TO HIGHWAY NOISE ABATEMENT

SIMPLE BARRIERS OF EARTHWORK OR SOLID CONSTRUCTION HAVE BEEN WIDELY USED TO REDUCE TRAFFIC NOISE LEVELS IN NEIGHBORHOODS ADJACENT TO URBAN FREEWAYS. THE KINEMATIC SOUND SCREEN IS A NEW CONCEPT IN NOISE BARRIER DESIGN. IT CONSISTS OF A SERIES OF HOLLOW, TRIANGULAR-SHAPED COLUMNS ACTING AS HELMHOLTZ RESONATORS. THE SPACING BETWEEN COLUMNS PERMITS THE MOTORIST TO "SEE THROUGH" THE BARRIER AT HIGHWAY SPEEDS WHILE AT THE SAME TIME SCREENING THE TRAFFIC FROM THE VIEW OF OBSERVERS IN NEARBY RESIDENTIAL AREAS. LABORATORY TESTING OF KINEMATIC SOUND SCREEN PANELS DEMONSTRATED THAT AN APPROXIMATE 15-DB ATTENUATION IN TRANSMITTED NOISE LEVELS CAN BE ACHIEVED WITH THIS APPROACH, WHICH IS COMPARABLE TO THAT OBTAINED WITH CONVENTIONAL, SOLID BARRIERS. A FULL-SCALE SOUND SCREEN HAS BEEN CONSTRUCTED ALONG A FREEWAY IN PHOENIX, ARIZONA, AND FIELD EVALUATION OF THIS PROTOTYPE DEMONSTRATED THAT ATTENUATION OF GREATER THAN 10 DB IS ACHIEVABLE USING A 12-FT HIGH SCREEN WITH GREATER ATTENUATION POSSIBLE. THE KINEMATIC SOUND SCREEN OFFERS A PROMISING ALTERNATIVE TO CONVENTIONAL BARRIERS ALONG FUTURE URBAN FREEWAYS.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 60-67
  • Monograph Title: Noise abatement and control
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00203847
  • Record Type: Publication
  • ISBN: 0309021790
  • Files: TRIS, TRB
  • Created Date: Jan 11 1974 12:00AM