Searched for: subject:"Acoustics%5C+and%5C+Audiology"
(1 - 20 of 459)

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Pacini, F. (author), Paoli, G. (author), Cayón, I. (author), Rivera, T. (author), Sarmiento, B. (author), Kebkal, K. (author), Kebkal, O. (author), Kebkal, V. (author), Geelhoed, J. (author), Schipperijn, B. (author), Dol, H.S. (author), Skogseth, T. (author)
The management of a heterogeneous mix of underwater vehicles needs a robust and reliable communication network, able to connect the remote command and control station (typically ashore or on board of a support ship) with nodes and vehicles in the deep sea. on the basis of this scenario, the infrastructure shall satisfy requirements such as:...
conference paper 2018
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Dittrich, M.G. (author), Papadimitriou, G. (author), Ntziachristos, L. (author), Steven, H. (author), Durampart, M. (author)
conference paper 2018
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Dittrich, M.G. (author), van Vliet, J.W. (author)
conference paper 2018
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Dittrich, M.G. (author)
De overheid wil negatieve effecten van verkeersgeluid in Nederland aanpakken vanuit een brede visie gericht op de periode tot 2050. Daarvoor is inzicht nodig in de effecten van ontwikkelingen in die periode in beleid, mobiliteit en technologie. TNO heeft een verkennende studie uitgevoerd en daarna een beleidsindicator ontwikkeld waarmee deze...
article 2016
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von Benda-Beckmann, A.M. (author), Wensveen, P.J. (author), Samarra, F.I.P. (author), Beerens, S.P. (author), Miller, P.J.O. (author)
Sound-recording acoustic tags attached to marine animals are commonly used in behavioural studies. Measuring ambient noise is of interest to efforts to understand responses of marine mammals to anthropogenic underwater sound, or to assess their communication space. Noise of water flowing around the tag reflects the speed of the animal, but...
article 2016
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Dittrich, M.G. (author), Carletti, E. (author), Spellerberg, G. (author)
In the ODELIA study for the European Commission an assessment of the outdoor equipment noise directive 2000/14/EC and its amendment 2005/88/EC has been performed. The directive requires noise marking for 57 types of equipment used outdoors, and sets noise limits for 22 of these. Since the limits have remained unchanged for many years, there is...
conference paper 2016
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van Ophem, S. (author), Berkhoff, A.P. (author)
Summary For broadband active noise control applications with a rapidly changing primary path, it is desirable to find algorithms with a rapid convergence, a fast tracking performance, and a low computational cost. Recently, a promising algorithm has been presented, called the fast-array Kalman filter, which uses rotation matrices to calculate...
article 2016
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Salomons, E.M. (author), Lohman, W.J.A. (author), Zhou, H. (author)
Propagation of sound waves in air can be considered as a special case of fluid dynamics. Consequently, the lattice Boltzmann method (LBM) for fluid flow can be used for simulating sound propagation. In this article application of the LBM to sound propagation is illustrated for various cases: free-field propagation, propagation over porous and...
article 2016
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Bronkhorst, A.W. (author)
How do we recognize what one person is saying when others are speaking at the same time? This review summarizes widespread research in psychoacoustics, auditory scene analysis, and attention, all dealing with early processing and selection of speech, which has been stimulated by this question. Important effects occurring at the peripheral and...
article 2015
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van der Rots, R. (author), Berkhoff, A.P. (author)
This paper describes numerical and experimental results of beamforming algorithms for generation of directional sound. The intended application is a sound source for cars with the objective to warn vulnerable road users while minimising noise pollution. Nowadays, sensors exist which are able to reveal the position of the vulnerable road users,...
article 2015
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Ho, J.H. (author), Berkhoff, A.P. (author)
This paper presents an acoustic source with a small thickness and high bending stiffness. The high bending stiffness is obtained with a sandwich structure in which the face of the sandwich structure internal to the source is perforated to increase the acoustic compliance, thereby leading to increased electroacoustic conversion efficiency....
article 2015
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de Kluizenaar, Y. (author)
Road traffic is a prominent source of environmental noise exposure in urbanized areas. Because of its common presence, traffic is a source of exposure that is not easy to avoid. As a consequence, it is affecting a substantial proportion of residents in their homes, and in their living environment more in general. In view of reducing the number...
doctoral thesis 2015
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Jolani, S. (author), Debray, T.P.A. (author), Koffijberg, H. (author), van Buuren, S. (author), Moons, K.G.M. (author)
Individual participant data meta-analyses (IPD-MA) are increasingly used for developing and validating multivariable (diagnostic or prognostic) risk prediction models. Unfortunately, some predictors or even outcomes may not have been measured in each study and are thus systematically missing in some individual studies of the IPD-MA. As a...
article 2015
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Berkhoff, A.P. (author), van Ophem, S. (author)
Noise reduction in feedforward active noise control systems with a rapidly changing primary path requires rapid convergence and fast tracking. This can be accomplished with a fast-array Kalman method which uses an efficient rotation matrix technique to calculate the filter parameters. However, finite precision effects lead to unstable behavior....
conference paper 2015
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van der Eerden, F.J.M. (author), Binnerts, B. (author), Graafland, F. (author)
Noise control starts by understanding the actual noise situation. Especially for situations where the distance between industrial and traffic noise sources and a local community is in the order of one kilometer or more, it may not be clear what sources are the main contributors to annoyance. Then a combination of monitoring and modeling is...
conference paper 2015
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Hornikx, M. (author), Forssén, J. (author), Botteldooren, D. (author), van Renterghem, T. (author), Wei, W. (author), Ögren, M. (author), Salomons, E. (author)
Mapping of road traffic noise in urban areas according to standardized engineering calculation methods systematically results in an underestimation of noise levels at areas shielded from direct exposure to noise, such as inner yards. In most engineering methods, road traffic lanes are represented by point sources and noise levels are computed...
article 2014
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Dittrich, M.G. (author), Eisses, A. (author), Staats, F. (author), Prevo, R. (author), van 't Hof, J. (author)
TNO heeft in opdracht van ProRail geluid- en trillingsmetingen uitgevoerd aan de HSL in Lansingerland, ter bepaling van het geluidreducerend effect van raildempers en absorberende platen die in 2013 zijn geïnstalleerd op het Rhedaspoor. De HSL ter plaatse rijdt in een verdiept spoor gedeeltelijk voorzien van geluidschermen. De dienstregeling...
report 2014
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Salomons, E.M. (author), Zhou, H. (author), Lohman, W.J.A. (author)
Traffic noise mapping of cities requires large computer calculation times. This originates from the large number of point-to-point sound propagation calculations that must be performed. In this article it is demonstrated that noise mapping calculation times can be reduced considerably by the use of parallel computation on the Graphics Processing...
conference paper 2014
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Swamy, M. (author), van Lier, L.J. (author), Smeulers, J.P.M. (author)
In one of the screw compressor system, designed silencer was not optimal. A great challenge was the large variation in operating conditions, especially the variation of the molecular weight of the gas. There was need to optimize the silencer. This paper describes the acoustic modelling tools to optimize the acoustic performance of the silencer....
conference paper 2014
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Ho, J.H. (author), Berkhoff, A.P. (author)
This paper compares various decentralised control strategies, including structural and acoustic actuator-sensor configuration designs, to reduce noise transmission through a double panel structure. The comparison is based on identical control stability indexes. The double panel structure consists of two panels with air in between and offers the...
article 2014
Searched for: subject:"Acoustics%5C+and%5C+Audiology"
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