LOS ANGELES INTERNATIONAL ADDS NOISE MONITORING SYSTEM IN THE QUEST TO GAIN A QUIETER AIRPORT

A computerized noise monitoring system is described which uses 15 microphones to measure noise levels. The noise picked up by the microphones is transmitted by telephone lines to a computer which is readout through a teletypewriter. State regulations require that both a Community Noise Exposure Level (CNEL) reading and a Single Event Noise Level reading be taken for airports known to have problems. The computer provides Average Noise Level printouts which list the hourly and 24-hour CNEL. This represents the sum total aircraft noise on a 24-hour basis as called for by the formulas in the State standards. The State formula rates the volume of operations by the time of day they occur. The State law specifies the allowable CNEL. This monitoring system will be used in a program of incentives to accelerate the use of quiet aircraft serving Los Angeles International Airport.

  • Corporate Authors:

    Lakewood Publications

    731 Hennepin
    Minneapolis, MN  USA  55403
  • Publication Date: 1973-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00155603
  • Record Type: Publication
  • Source Agency: Federal Aviation Administration
  • Files: TRIS, USDOT
  • Created Date: Oct 13 1977 12:00AM