INTERIOR NOISE REDUCTION IN RAIL VEHICLES--A SPECIFIC EXAMPLE

High noise levels within railroad cabooses make radio communication difficult, endanger hearing, and generally degrade working conditions for the crew. This paper describes methods used to reduce the noise levels in a railroad caboose from a Speech Interference Level (SIL) of 82.5 dB to an SIL of 68.6 dB. The noise spectrum finally achieved compares favorably with the noise in the first-class cabin of a large commercial jet airliner. The method of analyzing the caboose is presented. The relative importance of vibration isolation, structural damping, and acoustic absorption as noise reduction measures are discussed.

• Supplemental Notes:
  • Presented at the Vibrations Conference, Philadelphia, Pennsylvania, March 30-April 2, 1969.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Warnaka, G E
• Publication Date: 0

Media Info

• Features: Figures; References;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Cabooses; Noise
• Subject Areas: Environment; Railroads;

Filing Info

• Accession Number: 00041405
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 23 1974 12:00AM