Searched for: subject:"sound%5C+intensity"
(1 - 13 of 13)
document
Thomsen, F. (author), Borsani, F. (author), Clarke, D. (author), de Jong, C. (author), de Wit, P. (author), Goethals, F. (author), Holtkamp, M. (author), Martin, E.S. (author), Spadaro, P. (author), van Raalte, G. (author), Victor, G.Y.V. (author), Jensen, A. (author)
The World Organization of Dredging Associations (WODA) has identified underwater sound as an environmental issue that needs further consideration. A WODA Expert Group on Underwater Sound (WEGUS) prepared a guidance paper in 2013 on dredging sound, including a summary of potential impacts on aquatic biota and advice on underwater sound monitoring...
conference paper 2016
document
Wittekind, D. (author), Tougaard, J. (author), Stilz, P. (author), Dähne, M. (author), Clark, C.W. (author), Lucke, K. (author), von Benda-Beckmann, A.M. (author), Ainslie, M.A. (author), Siebert, U. (author)
We estimated the long-range effects of air gun array noise on marine mammal communication ranges in the Southern Ocean. Air gun impulses are subject to significant distortion during propagation, potentially resulting in a quasi- continuous sound. Propagation modeling to estimate the received waveform was conducted. A leaky integrator was used as...
bookPart 2016
document
Bolle, L.J. (author), de Jong, C.A.F. (author), Bierman, S.M. (author), van van Beek, P.J.G. (author), Wessels, P.W. (author), Blom, E. (author), van Damme, C.J.G. (author), Winter, H.V. (author), Dekeling, R.P.A. (author)
Concern exists about the potential effects of pile-driving sounds on fish, but evidence is limited, especially for fish larvae. A device was developed to expose larvae to accurately reproduced pile-driving sounds. Controlled exposure experiments were carried out to examine the lethal effects in common sole larvae. No significant effects were...
conference paper 2016
document
Dekeling, R. (author), Tasker, M. (author), Ainslie, M. (author), Andersson, M. (author), André, M. (author), Borsani, F. (author), Brensing, K. (author), Castellote, M. (author), Dalen, J. (author), Folegot, T. (author), van der Graaf, S. (author), Leaper, R. (author), Liebschner, A. (author), Pajala, J. (author), Robinson, S. (author), Sigray, P. (author), Sutton, G. (author), Thomsen, F. (author), Werner, S. (author), Wittekind, D. (author), Young, J.V. (author)
The European Marine Strategy Framework Directive requires European member states to develop strategies for their marine waters leading to programs of measures that achieve or maintain good environmental status (GES) in all European seas by 2020. An essential step toward reaching GES is the establishment of monitoring programs, enabling the state...
conference paper 2016
document
Vogel, I. (author), Verschuure, H. (author), van der Ploeg, C.P.B. (author), Brug, J. (author), Raat, H. (author), TNO Kwaliteit van Leven (author)
OBJECTIVE. The goal was to assess risky and protective listening behaviors of adolescent users of MP3 players and the association of these behaviors with demographic characteristics and frequency of use. METHODS. In 2007, 1687 adolescents (12-19 years of age) in 68 classes in 15 Dutch secondary schools were invited to complete questionnaires...
article 2009
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Vos, J. (author), TNO Technische Menskunde (author)
In a laboratory study, the annoyance caused by the passby sounds from a magnetic levitation (maglev) train was investigated. The listeners were presented with various sound fragments. The task of the listeners was to respond after each presentation to the question: "How annoying would you find the sound in the preceding period if you were...
article 2004
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Ainslie, M.A. (author), TNO Fysisch en Elektronisch Laboratorium (author)
A rigorous application of the traditional definition of sonar equation terms leads to the appearance of an unexpected factor, not routinely included, equal to the ratio of the characteristic impedance at the receiver to that at the source. An omission of this factor can lead to non-negligible errors for realistic conditions. It is further argued...
article 2004
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Miedema, H.M.E. (author), Instituut voor Ruimtelijke Organisatie TNO (author)
Relationships between exposure to noise [metric: day-night level (DNL) or day-evening-night level (DENL)] from a single source (aircraft, road traffic, or railways) and annoyance based on a large international dataset have been published earlier. Also for stationary sources relationships have been assessed. Here the annoyance equivalents model...
article 2004
document
Vos, J. (author), TNO Technische Menskunde (author)
In a previous study on the annoyance caused by a great variety of shooting sounds [J. Acoust. Soc. Am. 109, 244-253 (2001)], it was shown that the annoyance, as rated indoors with the windows closed, could be adequately predicted from the outdoor A-weighted and C-weighted sound-exposure levels [ASEL (L(AE)) and CSEL (L(CE))] of the impulse...
article 2003
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Vos, J. (author), Geurtsen, F.W.M. (author)
As an alternative to the A-weighted sound exposure level (ASEL) Schomer et al. [J. Acoust. Soc. Am. 110, 2390-2397 (2001)] used the equal-loudness level contours as a dynamic filter to determine the loudness-level-weighted sound exposure level (LLSEL). From their analyses they concluded that the LLSEL better orders and assesses traffic and...
article 2003
document
Langendijk, E.H.A. (author), Kistler, D.J. (author), Wightman, F.L. (author), TNO Technische Menskunde (author)
Localizing a target sound can be a challenge when one or more distracter sounds are present at the same time. This study measured the effect of distracter position on target localization for one distracter (17 positions) and two distracters (21 combinations of 17 positions). Listeners were instructed to point to the apparent position of a train...
article 2001
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Miedema, H.M.E. (author), Vos, H. (author), de Jong, R.G. (author), TNO Preventie en Gezondheid (author)
A decrease in the level of sound events can compensate for an increase in the level of other events, but noise metrics assume different tradeoffs. Noise metrics also differ in the penalty applied to noise in the evening and to noise in the night, and in the definition of these periods. These two aspects of noise metrics, i.e., the tradeoff and...
article 2000
document
Passchier-Vermeer, W. (author), Passchier, W.F. (author), TNO Preventie en Gezondheid (author)
Exposure to noise constitutes a health risk. There is sufficient scientific evidence that noise exposure can induce hearing impairment, hypertension and ischemic heart disease, annoyance, sleep disturbance, and decreased school performance. For other effects such as changes in the immune system and birth defects, the evidence is limited. Most...
article 2000
Searched for: subject:"sound%5C+intensity"
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