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Despite significant technological advancements in recent decades, users of hearing aids and hearing protection often report dissatisfaction due to an "unnatural" auditory experience. These challenges highlight gaps in our understanding of the physical mechanisms underlying hearing. A familiar example of the complex vibroacoustic phenomena involved – and a major cause of dissatisfaction with hearing technologies […] |
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The propagation of sound can be effectively and accurately modelled using geometrical simulation techniques. Traditional techniques, such as ray tracing and radiosity, generate energy decay responses that characterize acoustic interactions within specific environments. These responses can be transformed into impulse responses based on room acoustic models, facilitating a realistic sound reproduction. Filter synthesis approaches for […] |
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The occlusion effect occurs when the ear is completely or partially occluded, for example when wearing earphones or hearing aids. Sound transmitted through the body is amplified at lower frequencies, resulting in an altered perception of one’s own voice, often described as "hollow" or "talking into a barrel". This effect is one of the main […] |
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Lingens: Deep Learning methods for detecting and removing artefacts in skin conductance measurements
Lingens: Deep Learning methods for detecting and removing artefacts in skin conductance measurements
During my internship at HEAD acoustics, I mainly worked on signal processing for physiological measurements. In hearing tests and driving simulations in virtual reality, various physiological parameters are recorded over time in order to quantify the influence of acoustic stimuli on the test subject instead of relying solely on the subsequent questioning of the test […] |
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The complexity of populated real-life environments is hard to recreate in laboratory listening experiments. Using Virtual Reality (VR), this complexity can be simulated with close-to-real-life environments, while maintaining high controllability and reproducibility. However, there is a lack of guidelines which aspects of reality have to be represented in the virtual environments to ensure ecological validity. […] |
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Perception of sound may be created by irradiating the eardrum with appropriately modulated pulsed light. Such optical stimulation might have several benefits compared to acoustic miniature transducers, including wide-band sound reproduction without the necessity to close the ear canal, and low risk of feedback. Until now, the underlying opto-acoustic transduction mechanisms have not been fully […]
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The optoacoustic effect describes the creation of sound by means of radiation, mainly through the effects of differing temperature inside a target material. The full physical mechanisms behind the phenomenom are currently being studied, with the goal of using the effect among other things to the advantage of creating sound perception in humans directly at […]
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Children spend much of their day in classrooms where understanding speech is often challenged by background noise . This thesis reanalyzes data from two studies to investigate how efficiently primary school children listen in classroom settings, using the metrics "Direct Listening Efficiency" , "Linear Integrated Speed–Accuracy Score" , "Balanced Integration Score" and "Inverse Efficiency Score" […] |
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Akustik-Forschung
