Journal issue
Volume 23 (1999)
- Issue 6 Pages 370-
- Issue 5 Pages 297-
- Issue 4 Pages 205-
- Issue 3 Pages 125-
- Issue 2 Pages 61-
- Issue 1 Pages 3-
Predecessor
Volume 23
, Issue 5
Showing 1-13 articles out of 13 articles from the selected issue
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Shinji Yamada1999 Volume 23 Issue 5 Pages 297-300
Published: October 01, 1999
Released: October 06, 2009
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Atsushi Nishimura1999 Volume 23 Issue 5 Pages 301
Published: October 01, 1999
Released: October 06, 2009
JOURNALS FREE ACCESSDownload PDF (174K) -
Nobuo Machida1999 Volume 23 Issue 5 Pages 302-305
Published: October 01, 1999
Released: October 06, 2009
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Hiroaki Ochiai1999 Volume 23 Issue 5 Pages 306-310
Published: October 01, 1999
Released: October 06, 2009
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Yasuo Inoue1999 Volume 23 Issue 5 Pages 311-318
Published: October 01, 1999
Released: October 06, 2009
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Itsurou Murai1999 Volume 23 Issue 5 Pages 319-323
Published: October 01, 1999
Released: October 06, 2009
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Seizo Takebayashi1999 Volume 23 Issue 5 Pages 324-328
Published: October 01, 1999
Released: October 06, 2009
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Yukio Matsumoto1999 Volume 23 Issue 5 Pages 329-333
Published: October 01, 1999
Released: October 06, 2009
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Eishi Kuroda1999 Volume 23 Issue 5 Pages 334-338
Published: October 01, 1999
Released: October 06, 2009
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Kazuyasu Matsuo, Toshiyuki Aoki1999 Volume 23 Issue 5 Pages 339-343
Published: October 01, 1999
Released: October 06, 2009
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Ground Flare-Stack NoiseYoriyuki Takahashi1999 Volume 23 Issue 5 Pages 344-347
Published: October 01, 1999
Released: October 06, 2009
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Consideration of Calculation Procedures and Applicable ConditionsHiroaki Takinami, Shoji Aono, Koichi Takagi1999 Volume 23 Issue 5 Pages 348-355
Published: October 01, 1999
Released: October 06, 2009
JOURNALS FREE ACCESSWe have developed a system which predicts TTS (temporary threshold shift) in real-time operation at actual noise induced fields. This system consists of a combination of a sound level meter with one-third-octave band filters and a multi-purpose personal computer. At first, a calculation procedure was considered to enable real-time operation. In this consideration, it was found that the predicted value of TTS can be presented as the convolutional summation of the critical band spectrum level for the test frequencies and the impulse response obtained from the existing prediction equations. For Takagi's prediction equation, a time delay in the growth of the predicted TTS was observed, when the applicable conditions were processed by the same procedure for steady noise. An appropriate procedure to remove the time delay for time-varying noise was also considered.View full abstractDownload PDF (1313K) -
Fumitoshi Okiyama, Hideo Uchida, Takeshi Tokashiki, Naoki Takagi, Yasu ...1999 Volume 23 Issue 5 Pages 356-364
Published: October 01, 1999
Released: October 06, 2009
JOURNALS FREE ACCESSThe environmental quality standard for noise was revised and the evaluation of the environmental noise was shifted L50 into LAeq. In an evaluation of LAeq, it is needed generally to take a representative one day of LAeq during a year. Therefore, it is thought to become major in measurement of the environmental noise by an automatic measurement without manually operating. However, the stability of LAeq is not good agreement by comparing with L50 because a level is often influenced by the loud noise which occurred in the accident. Therefore, it is needed to remove an abrupt and reappearanceless sound in automatic measurement. As the way of search for the representative value of the place by using Grubbs-test and Thompson-test was used in the rejecting outliers on the quite difference data in Kawasaki City, Nagano City and Naha City. From these result, we confirm it is very effective method in measuring LAeq without manually operating.View full abstractDownload PDF (1486K)
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