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The balance between spectral resolution and physical accuracy is a central aspect for the design of real time path based auralization systems. The main problem is that reducing frequency resolution lowers processing costs but can significantly change the spectral representation of propagation effects. To investigate this, a systematic study of air attenuation, reflection and diffraction […] |
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Humans often miss otherwise obvious unexpected events when they are focused on a demanding task. This can occur in the auditory as well as visual domain – inattentional deafness and blindness, respectively. These phenomena can pose a danger in everyday life, such as not noticing a child crossing the street while focusing on other aspects […] |
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Geometrical acoustics has been widely used to simulate sound propagation in various environments because it has a lower computational cost than wave-based numerical simulations. An acoustic radiosity model (Sparrowpy) with a tabulated BRDF extension, which discretises reflections into finite cones based on random incidence or bidirectional scattering coefficients, is compared to an alternative ARE-based implementation […] |
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In urban acoustic environments, sound propagation is heavily influenced by obstacles that block the direct line-of-sight, making diffraction a crucial mechanism for plausible acoustic simulations. While the Uniform Theory of Diffraction (UTD) resolves the unnatural discontinuities present in standard Geometric Acoustics (GA), the computational cost increases exponentially with each additional diffraction order. This thesis investigates […]
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Active Noise Cancellation (ANC) and Talk-Through (TT) modes are common features in modern headsets. ANC typically provides enough attenuation that background noise becomes difficult to characterise. In this internship, several warning signals, such as passing cars and shouted speech, were recorded and used as background noise, and multiple headsets with ANC and TT were evaluated […] |
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