@article{oai:jaxa.repo.nii.ac.jp:00034455,
 author = {IGARASHI, Juichi and NISHINOMIYA, Gen},
 issue = {2},
 journal = {ISAS report/Institute of Space and Aeronautical Science,University of Tokyo},
 month = {Mar},
 note = {This paper presents a study of drawing the noise exposure contour around an airport. The contour was figured out from the measured data obtained in the vicinity of Osaka Airport. It is compared with the calculated contour based on the data of FAA, the specified flight paths and the scheduled operations similar to those of the period of measurements. The methods of determination of PNdB, duration and tone corrections are also mentioned together with the relation between PNdB and dB(D) or dB(A)., 資料番号: SA2400849000},
 pages = {53--69},
 title = {Determination of Noise Exposure around an Airport},
 volume = {37},
 year = {1972}
}