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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230505T110000
DTEND;TZID=Europe/Berlin:20230505T113000
DTSTAMP:20260505T214344
CREATED:20230413T084139Z
LAST-MODIFIED:20230413T084139Z
UID:2537-1683284400-1683286200@blog.rwth-aachen.de
SUMMARY:Nugraheni: Numerical simulation and evaluation of scattering coefficients of building facades
DESCRIPTION:The acoustic propagation of sound in the open field or in the interior can be calculated efficiently and in high quality by geometric simulation methods. However\, for correct simulations\, accurate surface parameters such as absorption and scattering coefficients are required. In this thesis\, the scattering coefficient of different facades is simulated with established numerical methods. Furthermore a given example environment is simulated and evaluated with and without the new coefficients. \nMelden Sie sich hier an um Einladungen zu den Kolloquium-Vorträgen per E-Mail zu erhalten.\nRegister here to receive the invitations to colloquium talks via e-mail. \nZoom-Meeting-ID: 954 4073 3814\nPasswort: 450783
URL:https://blog.rwth-aachen.de/akustik/event/nugraheni-numerical-simulation-and-evaluation-of-scattering-coefficients-of-building-facades/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Bachelorarbeit
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230505T113000
DTEND;TZID=Europe/Berlin:20230505T120000
DTSTAMP:20260505T214344
CREATED:20230428T161432Z
LAST-MODIFIED:20230428T161432Z
UID:2600-1683286200-1683288000@blog.rwth-aachen.de
SUMMARY:Mika: Internship at topsystem GmbH
DESCRIPTION:The presentation will introduce the company and give an insight into the practical work experience during the internship. The focus of the talk will lie on the explanation of the design and manufacturing of a Wifi Control Board. All steps\, from the part selection\, to schematic design\, to the final assembly will be discussed. \nMelden Sie sich hier an um Einladungen zu den Kolloquium-Vorträgen per E-Mail zu erhalten.\nRegister here to receive the invitations to colloquium talks via e-mail. \nZoom-Meeting-ID: 954 4073 3814\nPasswort: 450783
URL:https://blog.rwth-aachen.de/akustik/event/mika-internship-at-topsystem-gmbh/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Vortrag Praxissemester
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230525T110000
DTEND;TZID=Europe/Berlin:20230525T120000
DTSTAMP:20260505T214344
CREATED:20230412T120123Z
LAST-MODIFIED:20230412T120123Z
UID:2513-1685012400-1685016000@blog.rwth-aachen.de
SUMMARY:Möhlmann: Finite Element Simulation of the Occlusion Effect in the Ear Canal
DESCRIPTION:English: When the ear canal is occluded by devices such as headphones or hearing aids\, the auditory perception of bone-conducted sounds is increased\, which results\, e.g.\, in an alteration of one’s own voice perception. The effect is caused by a motion of the skull that deforms the cartilage and bone to radiate sound into the ear canal.\nAn anatomical finite element model of the outer ear is used to investigate details of the occlusion effect. The spatial distribution of the vibrations at the ear canal walls is analyzed for different types of excitation and the results are discussed for the open and occluded ear canal entrance. These simulations provide insights that could be used to develop measures to reduce the occlusion effect. Improving the knowledge of the occlusion effect may further benefit future algorithms. \nDeutsch: Wenn der Gehörgang durch Geräte wie Kopfhörer oder Hörgeräte verschlossen wird\, erhöht sich die auditive Wahrnehmung von Knochenschall\, was z. B. zu einer veränderten Wahrnehmung der eigenen Stimme führt. Der Effekt wird durch eine Bewegung des Schädels verursacht\, die den Knorpel und den Knochen verformt\, sodass der Schall in den Gehörgang abgestrahlt wird.\nEin anatomisches Finite-Elemente-Modell des Außenohrs wird verwendet\, um Details des Okklusionseffekts zu untersuchen. Die räumliche Verteilung der Schwingungen an den Gehörgangswänden wird für verschiedene Anregungsarten analysiert und die Ergebnisse werden für den offenen und geschlossenen Gehörgangseingang diskutiert. Diese Simulationen liefern Erkenntnisse\, die zur Entwicklung von Maßnahmen zur Verringerung des Okklusionseffekts genutzt werden können. Die Verbesserung des Wissens über den Okklusionseffekt kann zukünftigen Algorithmen dienen. \nMelden Sie sich hier an um Einladungen zu den Kolloquium-Vorträgen per E-Mail zu erhalten.\nRegister here to receive the invitations to colloquium talks via e-mail. \nZoom-Meeting-ID: 954 4073 3814\nPasswort: 450783
URL:https://blog.rwth-aachen.de/akustik/event/moehlmann-finite-element-simulation-of-the-occlusion-effect-in-the-ear-canal/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Masterarbeit
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230526T103000
DTEND;TZID=Europe/Berlin:20230526T110000
DTSTAMP:20260505T214344
CREATED:20230516T145159Z
LAST-MODIFIED:20230517T140520Z
UID:2620-1685097000-1685098800@blog.rwth-aachen.de
SUMMARY:Merten: Performance of short term memory under the influence of (a)synchronous audio visual speech stimuli
DESCRIPTION:Nowadays\, more and more conversations are conducted via technical aids\, such as computers or mobile phones. In technology\, there can be connection or processing problems that lead to disturbances in playback. As a result\, audio and video signals\, for example\, are time-delayed\, which can be noticeable and disturbing. Since short-term memory is needed\, especially in speech comprehension\, to extract information from what is said\, the question is to what extent these imperceptible and noticeable time offsets have an influence on short-term memory. To answer this\, a serial recall task was designed to investigate the effect of the delays on short-term memory. In this task\, participants are presented with items that they must recall in the same order as presented. The auditory stimuliwere spoken numbers and the visual stimuli were the lip movements during pronunciation. In addition to conditions in which the auditory and visual stimuli were presented separately\, there were audiovisual conditions in which the stimuli were delayed with respect to each other by up to 400 ms. On the one hand\, no significant effect of the delays was observed in short-term memory performance. On the other hand\, it was observed that the participants performed significantly worse in the visual condition. These results suggest that the lip movements were not read well. Furthermore\, this could have caused the delays to be noticeable but not irritating due to the inaccuracy in lip reading. Nevertheless\, participants might have achieved comparable results with more effort. \nMelden Sie sich hier an um Einladungen zu den Kolloquium-Vorträgen per E-Mail zu erhalten.\nRegister here to receive the invitations to colloquium talks via e-mail. \nZoom-Meeting-ID: 954 4073 3814\nPasswort: 450783 \n 
URL:https://blog.rwth-aachen.de/akustik/event/merten-performance-of-short-term-m-emor-y-under-the-influence-of-asynchronous-audio-visual-speech-stimuli/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Bachelorarbeit
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230526T110000
DTEND;TZID=Europe/Berlin:20230526T120000
DTSTAMP:20260505T214344
CREATED:20230516T145301Z
LAST-MODIFIED:20230516T145301Z
UID:2622-1685098800-1685102400@blog.rwth-aachen.de
SUMMARY:Sun: Numerical analysis of anvil vibrations during Ultrasonic Metal Welding
DESCRIPTION:Ultrasonic Metal Welding (USMW) is a widely used manufacturing technology for joining metal components in modern industry. The metal sheets which are placed above the anvil need to be bonded. The sonotrode\, which is also called the horn\, vibrates at high frequency and on the top of the metal sheets. The constant clamp force applied on the metal sheets from the horn produces friction force between two metal sheets and makes them join together. The joining strength is the most important aspect of the welding process. However\, it is impossible to directly measure the joining strength in reality. One way to estimate the joining strength is by measuring the vibrations of the horn and the anvil and using these measurement data to compute the vibrations of the welding area which can represent the joining strength during the welding process. Therefore\, the goal of this thesis is to use the simulations with COMSOL and measurements by Laser Doppler Vibrometer (LDV) to help us learn more about the physical behavior of the anvil during the welding process. \nMelden Sie sich hier an um Einladungen zu den Kolloquium-Vorträgen per E-Mail zu erhalten.\nRegister here to receive the invitations to colloquium talks via e-mail. \nZoom-Meeting-ID: 954 4073 3814\nPasswort: 450783
URL:https://blog.rwth-aachen.de/akustik/event/sun-numerical-analysis-of-anvil-vibrations-during-ultrasonic-metal-welding/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Masterarbeit
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