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.
- Presented at the Vibrations Conference, Philadelphia, Pennsylvania, March 30-April 2, 1969.
American Society of Mechanical EngineersTwo Park Avenue
New York, NY United States 10016-5990
- Warnaka, G E
- Publication Date: 0
- Features: Figures; References;
- Pagination: 8 p.
- Accession Number: 00041405
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 23 1974 12:00AM