Searched for: subject:"Acoustic%5C+variables%5C+measurement"
(1 - 11 of 11)
document
van Es, M.H. (author), Quesson, B.A.J. (author), Mohtashami, A. (author), Piras, D. (author), Hatakeyama, K. (author), Fillinger, L. (author), van Neer, P.L.M.J. (author)
In order to extract ever more performance from semiconductor devices on the same device area, the semiconductor industry is moving towards device structures with increasingly complex material combinations and 3D geometries. To ensure cost effective fabrication of next generation devices, metrology solutions are needed that tackle the specific...
conference paper 2020
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Quesson, B.A.J. (author), van Neer, P.L.M.J. (author), van Riel, M.C.J.M. (author), van Es, M.H. (author), Piras, D. (author), Hatakeyama, K. (author), Mohtashami, A. (author), Navarro, V. (author), Duivenvoorde, T. (author), Sadeghian Marnani, H. (author)
Many techniques are under development for the detection of subsurface defects or cracks. One such method is GHz subsurface probe microscopy (GHz SSPM). Here, modulated GHz elastic waves are transmitted through the bottom of a sample. The waves are scattered by buried features and detected using the probe of an atomic force microscope (AFM),...
conference paper 2018
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Beerends, J.G. (author), van Nieuwenhuizen, K. (author), van den Broek, E.L. (author)
We present PREQUEL: Perceptual Reproduction Quality Evaluation for Loudspeakers. Instead of quantifying the loudspeaker system itself, PREQUEL quantifies the overall loudspeakers' perceived sound quality by assessing their acoustic output using a set of music signals. This approach introduces a major problem: subjects cannot be provided with an...
article 2016
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Jansen, E. (author), De Jong, C. (author)
conference paper 2016
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Mast, A. (author), van den Dool, T.C. (author), van der Toorn, J.D. (author), Watts, G. (author)
In national and European discussions, it appears that the conventional sound measurement techniques are insufficient to answer some relevant questions with respect to source strength of road vehicles. An example of such a question is: What is the importance of tyre-road noise on the one hand and drive-line noise on the other hand in every day...
conference paper 2003
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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
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van der Toorn, J.D. (author), Hendriks, H. (author), van den Dool, T.C. (author)
A 10 m high, vertical, synthetic acoustic antenna (Syntacan) has been used to measure the acoustic source strength and the vertical source distribution of a French TGV, as a function of the speed of the train, the frequency of the sound and the coach type (passenger coach, power car). The results are intended as input for calculation schemes and...
article 1996
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Verheij, J.W. (author), Technisch Physische Dienst TNO - TH (author)
Measurement of the structure-borne sound energy flow through pipes has been studied for the purpose of transmission path ranking. This paper describes the measuring methods for frequencies below the cut-off frequency of the n = 2 shell mode. The methods show a strong analogy with the two-microphone cross-spectral density method for airborne...
article 1990
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ten Wolde, T. (author), Technisch Physische Dienst TNO - TH (author)
ISO 3095 describes a type test method for noise emission of railbound vehicles at constant speed. The quality of this method is discussed on the basis of practical experience. It is shown that the method is not satisfactory and must be improved. Possibilities for such improvements are presented.
article 1988
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Gerretsen, E. (author), Technisch Physische Dienst TNO - TH (author)
The rating of impact sound insulation on the basis of tapping machine measurements with the ISO reference values has proved to be unsatisfactory in practice. This is mainly due to the differences in spectrum shape of tapping machine noise and real life impact noises, such as walking. The problem can be solved by changing the reference values in...
article 1976
Searched for: subject:"Acoustic%5C+variables%5C+measurement"
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