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DTSTART;TZID=Europe/Berlin:20240202T110000
DTEND;TZID=Europe/Berlin:20240202T113000
DTSTAMP:20260506T222029
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SUMMARY:Konrad: Numerical study of nonlinear factors in acoustic scale model measurements
DESCRIPTION:This thesis focuses on investigating the effects of atmospheric attenuation when employing scale models\, with the ultimate goal of improving their application in the study of noise in urban regions. While direct measurements within urban regions are feasible\, they may encounter problems\, such as noise. For those reasons\, there has been a resurgence of interest in utilizing scale models. However\, significant discrepancies arise at high frequencies when comparing scaled results from scale models with those from full-size models\, primarily attributed to atmospheric attenuation\, influenced by temperature\, humidity\, and static pressure. \nThe primary objective of this thesis is to explore the physics of atmospheric attenuation and investigate a correction method specifically tailored for addressing deviations in scale models. Using a Boundary Element Method (BEM) simulation in COMSOL Multiphysics\, atmospheric attenuation is computed for various humidity and temperature conditions. A correction is then applied to the results and analyzed. \nAdditionally\, the thesis extends to an investigation of the hemi-anechoic room at the IHTA\, examining variations in temperature\, humidity\, and pressure. This analysis aims to comprehend the room’s behavior and provide insights into considerations for conducting scale model experiments within this environment. \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/konrad-numerical-study-of-nonlinear-factors-in-acoustic-scale-model-measurements/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Bachelorarbeit
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DTSTART;TZID=Europe/Berlin:20240209T110000
DTEND;TZID=Europe/Berlin:20240209T120000
DTSTAMP:20260506T222029
CREATED:20240203T155557Z
LAST-MODIFIED:20240203T155557Z
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SUMMARY:Selvi: Product Sound Quality Evaluation in Virtual Reality
DESCRIPTION:Product sound quality significantly shapes consumer perception and user experience. Thus\, the assessment of perceptual sound quality holds particular relevance for the industry. Sound quality assessment in listening laboratories utilizing binaural recordings facilitates realistic sound reproduction. However\, such conditions do not adequately capture potential audio-visual interactions and environmental influences on sound quality ratings. To address these limitations\, this study develops an audio-visual virtual environment for product sound quality evaluation. The VR environment is compared with traditional listening studio environments and real-world conditions. This comparative analysis\, focusing on coffee grinders as the selected product\, uses a between-group listening experiment with semantic differential method with 22 participants for each listening condition. \nThe primary outcome of the study rejects the null hypothesis\, highlighting significant differences in sound quality perceptions across different listening conditions. The research particularly discusses the disparities between the VR and real-world conditions in SQ ratings\, underscoring the influence of both acoustical and non-acoustical factors in these perceptions. The findings suggest that while VR offers an immersive and potentially more representative environment for sound quality assessment\, certain technical and experiential challenges need to be addressed for more accurate evaluations. These include considerations regarding the acquisition and simulation processes in VR and the novelty effect of VR environments. \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/selvi-product-sound-quality-evaluation-in-virtual-reality/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Masterarbeit
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