References of "Embrechts, Jean-Jacques"
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See detailAuralization in Room Acoustics using Directional Impulse Responses Computed by Sound Ray Techniques
Embrechts, Jean-Jacques ULg; Werner, Nicolas; Lesoinne, Stéphane ULg

in Proceedings of the 4th Forum Acusticum Congress (2005)

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See detailComputation of Directional Impulse Responses in Rooms for Better Auralization
Embrechts, Jean-Jacques ULg; Werner, Nicolas; Lesoinne, Stéphane ULg

in Proceedings of the 118th Convention of the Audio Engineering Society (2005)

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See detailActive noise control in frontages of buildings
Tamaz, Patrick; Caule, Patrice; Nemerlin, Jean ULg et al

in Proceedings of SPS-DARTS 2005 (2005)

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See detailRandom-incidence scattering coefficients of infinite sine-shaped surfaces
Embrechts, Jean-Jacques ULg

in Proceedings of the 4th Forum Acusticum Congress (2005)

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See detailPlacement of Piezoelectric Laminate Actuator for Active Structural Acoustic Control
Brasseur, Maud; De Boe, Pascal; Golinval, Jean-Claude ULg et al

Conference (2004)

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See detailActive noise insulation in frontages of buildings
Caule, Patrice; Tamaz, Patrick; Brasseur, Maud et al

Conference (2004)

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See detailCase studies in measurement of random incidence scattering coefficients
Vorländer, Michael; Embrechts, Jean-Jacques ULg; De Geetere, Lieven et al

in Acta Acustica United With Acustica (2004), 90(5, SEP-OCT), 858-867

In this work measurements of random-incidence scattering coefficients in three laboratories are compared. The sample geometry is sinusoidal. These surfaces are geometrically identical, but they were ... [more ▼]

In this work measurements of random-incidence scattering coefficients in three laboratories are compared. The sample geometry is sinusoidal. These surfaces are geometrically identical, but they were constructed in different scales. So far, measurements of this kind were performed only in scale models. Using turntables in real sample size was hardly considered possible. One result of general importance is that measurements are indeed possible in real-scale reverberation rooms with turntables of 3 m diameter. There are only small differences between the real-scale and model-scale results. Some variations of the standard procedure were tested and the uncertainties identified: mounting of the sample, connection or sealing between sample and base plate, way of rotating the sample, air absorption and time variances. The results presented can be regarded as guidelines for application of ISO/DIS 17497-1. [less ▲]

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See detailNotions d'acoustique
Embrechts, Jean-Jacques ULg

Conference (2003, November)

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See detailOptimal design of outdoor lighting systems by genetic algorithms - Discussion
Embrechts, Jean-Jacques ULg

in Lighting Research & Technology (2003), 35(3), 278-280

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See detailCalculation of the scattering coefficient of a sine-shaped surface by using the BEM method
De Geetere, L.; Embrechts, Jean-Jacques ULg; Vermeir, G.

in Proceedings of the Institute of Acoustics (2003), 25(5), 75-83

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See detailCalculation of the scattering coefficient of a sine-shaped surface by solving the Helmholtz integral
Embrechts, Jean-Jacques ULg; De Geetere, L.; Vermeir, G.

in Proceedings of the Institute of Acoustics (2003), 25(5), 67-74

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See detailIntroduction aux techniques de l'éclairage
Embrechts, Jean-Jacques ULg

Conference (2002, June)

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See detailComparison of different impulse response measurement techniques
Stan, Guy-Bart; Embrechts, Jean-Jacques ULg; Archambeau, Dominique

in Journal of the Audio Engineering Society (2002), 50(4), 249-262

The impulse response of an acoustical space or transducer is one of its most important characterizations. In order to perform the measurement of their impulse responses, four of the most suitable methods ... [more ▼]

The impulse response of an acoustical space or transducer is one of its most important characterizations. In order to perform the measurement of their impulse responses, four of the most suitable methods are compared: MLS (maximum-length sequence), IRS (inverse repeated sequence), time-stretched pulses, and SineSweep. These methods have already been described in the literature. Nevertheless, the choice of one of them depending on the measurement conditions is critical. Therefore an extensive comparison has been realized. This comparison was done through the implementation and realization of a complete, fast, reliable, and cheap measurement system. Finally, a conclusion for the use of each method according to the principal measurement conditions is presented. It is shown that in the presence of nonwhite noise, the MLS and IRS techniques seem to be more accurate. On the contrary, in quiet environments the logarithmic SineSweep method seems to be the most appropriate. [less ▲]

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See detailActive insulation in dwellings
Embrechts, Jean-Jacques ULg; Caule, Patrice; Tamaz, Patrick et al

in NAG journaal (2002), 162

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See detailModélisation des réflexions diffuses en acoustique des salles: état de la question
Embrechts, Jean-Jacques ULg

in Actes du 6è Congrès Français d'Acoustique (2002)

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See detailStudy of the influence of coloured road surfaces on the efficiency of road lighting installations
Frankinet, Marc; Gillet, Marc; Duthoit, Fabienne ULg et al

in Proceedings of the 9th Lux Europa Congress (2001)

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