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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260415T150000
DTEND;TZID=Europe/Berlin:20260415T160000
DTSTAMP:20260414T113809
CREATED:20260408T153940Z
LAST-MODIFIED:20260408T153940Z
UID:3948-1776265200-1776268800@blog.rwth-aachen.de
SUMMARY:Ann-Christin Schlupek: From ear canal to perception: numerical simulation of the occlusion effect for hearing technologies
DESCRIPTION:The occlusion effect (OE) describes the increased perception of body internal sound such as one’s own voice when the ear canal is blocked. This phenomenon often leads to discomfort with hearing aids or hearing protection devices. There are two common approaches for the assessment of the OE. The objective OE which is based on ear canal sound pressure level differences and the subjective OE defined by changes in hearing threshold levels. Discrepancies between these two remain little understood. In this study a numerical head model including the ear canal\, middle ear and inner ear structures was used to investigate the vibro-acoustic mechanisms underlying these discrepancies. First\, the model was validated against available experimental data from literature which covered different bone conduction pathways. This enabled the simulation of bone conducted excitation under unoccluded and occluded ear canal conditions. For skull stimulation at mastoid position\, the simulation results showed good agreement with the experiments\, whereas soft tissue stimulation could not be fully validated due to remaining uncertainties. The results suggest that the relative volume velocity of the oval window is a promising predictor of the subjective OE over a broad frequency range. Moreover\, at low frequencies\, changes in an equivalent impedance of the tympanic membrane and oval window were found. Combined with an outer ear based estimate of the volume velocity at the oval window for bone conduction\, derived from the air conduction middle ear transfer function\, these results suggest that the outer ear pathway dominates when the ear canal is occluded. Such a clear dominance is not evident in the unoccluded case. Consequently\, ear canal sound pressure appears to be a reliable measure for determining the OE only under occluded conditions. \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/ann-christin-schlupek-from-ear-canal-to-perception-numerical-simulation-of-the-occlusion-effect-for-hearing-technologies/
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:20260417T110000
DTEND;TZID=Europe/Berlin:20260417T120000
DTSTAMP:20260414T113809
CREATED:20260413T104815Z
LAST-MODIFIED:20260413T104815Z
UID:3952-1776423600-1776427200@blog.rwth-aachen.de
SUMMARY:Ana M. Jaramillo: Geometrical acoustics simulations: questions and best practices
DESCRIPTION:Should we trust statistical equations for prediction of room acoustics? How much detail should a geometrical acoustic model have? How to predict the behavior of baffles? These are some of the questions that don’t have a definitive answer when it comes to computer models using geometrical acoustic methods. We will discuss several studies where we try to answer them and develop best practices and recommendations for the use of geometrical acoustics simulation software. \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/ana-m-jaramillo-geometrical-acoustics-simulations-questions-and-best-practices/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Vortrag
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260424T110000
DTEND;TZID=Europe/Berlin:20260424T120000
DTSTAMP:20260414T113809
CREATED:20260407T095637Z
LAST-MODIFIED:20260407T095720Z
UID:3945-1777028400-1777032000@blog.rwth-aachen.de
SUMMARY:Julia Seitz: Measuring children’s listening effort in realistic classroom situations
DESCRIPTION:Understanding how children process speech in noisy environments is essential for designing effective educational and therapeutic interventions for speech and hearing challenges. Every day\, children spend a large part of their time in classrooms\, which represent acoustically complex environments\, including competing talkers and activity-based noise. Listening in such settings is particularly demanding for children\, as their auditory cognition is still developing. For primary school children specifically\, understanding speech in noisy situations is cognitively demanding\, requiring a higher amount of cognitive resources. Such situations require increased listening effort\, defined as the deliberate allocation of mental resources needed to overcome obstacles in goal pursuit when carrying out a listening task. Investigating listening effort in classroom scenarios requires the consideration of age-appropriate measurement methods and realistic acoustic conditions\, including challenging signal-to-noise ratios\, and activity-based noise variations. Currently\, there is limited research integrating realistic classroom noise conditions\, employing comprehensive measurement approaches\, and examining individual developmental differences. This thesis aims to contribute to three main objectives: transferring artificial laboratory-based research into realistic classroom noise scenarios\, assessing listening effort through multidimensional measurement approaches\, and examining how children’s demographic characteristics influence cognitive demands in noisy conditions. To achieve the first aim\, the acoustic environments of primary school classrooms were characterised through measurements\, and realistic noise scenes were recreated using auralisation and iterative acoustic modelling. The second aim involves combining behavioural listening effort measures from listening experiments with subjective perceptions assessed with a newly developed child-appropriate questionnaire to capture the multidimensionality of listening effort. For the third aim\, developmental differences were examined across four empirical studies involving 172 children aged six to ten. In addition\, the influence of children’s socioeconomic status and leisure activities was considered. Key findings reveal that listening was significantly more effortful for six- to seven-year-olds than for eight- to ten-year-olds\, as evidenced by both subjective and behavioural measures. Importantly\, both assessment approaches yielded aligned results\, suggesting that a multidimensional approach to evaluating listening effort is both valid and beneficial for future research and clinical applications. Overall\, this thesis provides comprehensive evidence of how children allocate their cognitive resources in realistic classroom scenarios\, establishing methodological foundations for future educational and clinical applications. \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: 633 7698 8548\nPasswort: 240426
URL:https://blog.rwth-aachen.de/akustik/event/julia-seitz-measuring-childrens-listening-effort-in-realistic-classroom-situations/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Dissertation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260508T110000
DTEND;TZID=Europe/Berlin:20260508T120000
DTSTAMP:20260414T113809
CREATED:20260411T153128Z
LAST-MODIFIED:20260414T092700Z
UID:3950-1778238000-1778241600@blog.rwth-aachen.de
SUMMARY:Carolin Breuer: Evaluating Auditory Selective Attention in Classroom Scenarios using Audiovisual Virtual Reality - From Auditory to Audiovisual Scenarios
DESCRIPTION:How do we focus on one sound source while ignoring distractions in a noisy environment? This thesis investigates auditory selective attention in a virtual reality classroom\, using immersive technology to study listening behavior in settings that resemble everyday life more closely than traditional approaches. \nAn established audio-only attention task was transferred into a VR classroom scenario\, where participants responded to sounds coming from different spatial positions. Initial results showed more accurate responses in VR\, suggesting that immersive environments may increase engagement and motivation. \nFurther studies examined how visual context\, realistic classroom noise\, and room acoustics influence auditory attention. While audio-visual congruence showed no consistent benefits\, complex background noise and intelligible speech clearly reduced performance and increased listening effort. Simulated reverberation also affected performance. \nTogether\, the findings show that realistic listening behavior cannot be fully captured with traditional unisensory paradigms alone. Instead\, more plausible approaches are needed to understand how auditory attention operates in real classrooms\, workplaces\, and other everyday 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: 643 7384 8607\nPasswort: 2020000
URL:https://blog.rwth-aachen.de/akustik/event/carolin-breuer-evaluating-auditory-selective-attention-in-classroom-scenarios-using-audiovisual-virtual-reality-from-auditory-to-audiovisual-scenarios/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Dissertation
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