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Zhu: Emulation of RRAM crossbar array on FPGA Platform

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

RRAMs (Resistive Random Access Memory) have resistive switching characteristics and show potential for fast speeds, high energy efficiency, and three-dimensional stacking. We aim to overcome the limitations of traditional von Neumann architecture by employing RRAM for in-memory storage and computation. Considering the widespread use of Deep Neural Networks (DNNs) in complex tasks, we target the […]

Liu: Enhancing Tonality Prediction Using Neural Network

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

This presentation is about my industrial internship tasks at HEAD acoustics GmbH in the Sound Vibration Perception (SVP) department, with a focus on the development and utilization of a neural network for tonality prediction. During my internship, the neural network, designed to accelerate tonality calculations, achieved a nearly twofold increase in speed compared to the […]

Katz: Experimental virtual archaeological-acoustics – Bringing auditory experience into social science and architectural research and design

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Research in historical musical acoustics has traditionally emphasized instrument fabrication, material choices, and construction impact. Similarly, musicological, theatrical, and religious studies have delved into various aspects of historical contexts. However, little attention has been given to acoustical conditions crucial for human-to-human communication in these scenarios. Recent advancements in computational accuracy and virtual reality simulations, inspired […]

Pan: Analysis of Surface Scattering Basing on Numerical Simulation

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Directional scattering patterns of surface contain much more detail information than the single number quantities of scattering and diffusion coefficients. In the development of acoustic computer simulation, more accurate results and natural sound perception of auralization requires more detail information about sound propagation. In this study, two methods are used for spatial clustering of scattered […]

Konrad: Numerical study of nonlinear factors in acoustic scale model measurements

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

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 […]

Selvi: Product Sound Quality Evaluation in Virtual Reality

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

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 […]

Drozdov: Estimation of a representative surface impedance for given incidence angle distributions

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Room acoustic simulations usually assume the acoustic impedance of surfaces to be independent from wave incidence angle - in other words locally reacting. For most materials this is a valid assumption. Some porous absorber structures are, however, non-locally reacting: Their surface impedance expresses a dependence on the direction of an incident wave - more exactly […]

Kapidani: Supervised Learning for Modeling Reverberant Sound Fields

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

This thesis focuses on learning a measuring method for the determination of the acoustic characteristics of porous materials within a reverberant room setting. Using a supervised learning approach, this research aims to estimate from sound field measurements in the industry standard Alpha Cabin, the most important material parameter that porous materials exhibit, namely the flow […]

Schwachtgen: Validation of Novel Determination Methods for Acoustic Material Parameters

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Adequate room acoustic conditions are crucial for creating comfortable communication, learning, or working environments. While acoustic simulations are an established tool for the prediction of the acoustic conditions in a room, the input data describing the acoustic properties of the surfaces and objects in rooms comes with uncertainties. In this thesis work, standardized and non-standardized […]

Liu: Exploring Listening Effort in Primary School Classrooms

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

In primary schools, various activities can be conducted during classes. To improve the quality of communication, it was aimed to understand children's listening effort during different types of activities. In this thesis, the measurements were conducted in first and fourth grade in primary schools. Listening effort was assessed subjectively by the children in the means […]

Lobato: Improving sound source localization and characterization with machine learning techniques

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

is thesis addresses key challenges in acoustics applications like troubleshooting, product optimization, and sound source modeling, focusing on the localization and characterization of sound sources using Beamforming techniques and an improved regularization of inverse methods. Traditional Beamforming methods, while effective in identifying main radiating sources, are limited by the array size and density, which affects […]

Rehman: Comparison of VR and web-based listening experiments on the perception in complex auralized environments

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Audiovisual listening experiments are crucial for understanding acoustical noise and human sound perception. However, traditional VR setups are limited by the need for expensive equipment and time-consuming laboratory sessions. As a result, interest in online experiments has been growing, especially since the COVID-19 pandemic. So far, these experiments have been restricted to basic setups lacking […]

Rummler: Scale Model Study of Audience Related Transfer Functions (ARTF) for Direct Sound and Early Reflections – Internship with Kahle Acoustics srl

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

A 1:20 scale model has been constructed to investigate grazing attenuation by seats and audience at various angles of sound incidence, for both direct sound and early reflections. Transfer functions for a range of azimuth and elevation angles have been measured both for unupholstered seats and with modeled audience: these are referred to as the […]

Denker: Spatially Dynamic Irrelevant Noise in a Navigation Task

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

The working memory plays an important role in completing everyday tasks and is influenced by irrelevant sound when it comes to serialization of information. While this phenomenon, the irrelevant sound effect, is well known for phonological cognition, the influence and constraints for visuo-spatial cognition are yet to be fully explored. To serve this endeavor and […]

Hapsari: Comparison of acoustic radiosity and diffuse rain algorithms

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

The acoustic propagation of sound in the free field or indoors can be calculated efficiently and in high quality by geometrical acoustics simulation methods. However, different geometrical approaches such as ray tracing and radiosity use different approaches to simulate an acoustic environment. In this thesis, the quality and the performance of these different approaches are […]

Las Heras: Room Acoustic Auditory Memory

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

This study conforms an investigation on auditory memory, particularly in the field of room acoustics. Based on the research on short term memory, especially in the auditory field, this work intends to test individuals' room acoustics discrimination capabilities under different conditions; in particular, retention interval, excitation signal and room similarity. Using binaural auralizations of spatial […]

Tillmann: The influence of realistic audiovisual noise on auditory selective attention

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Research in the field of auditory selective attention continues to evolve, with an increasing interest in creating more realistic testing conditions. Therefore, a previously validated paradigm for investigating auditory selective attention had been extended with spatial auditory reproduction and realistic noise conditions. Building on recent endeavors in exploring the usability of immersive virtual reality in […]

Storms: How does an audiovisual incongruency influence the perception of classrooms in virtual reality?

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Room perception has different perception levels and influences which can have an impact on the perception. The rooms can be estimated uni-modal and multi-modal. In this thesis, the influence of an incongruency of audiovisual cues in different classroom scenarios is examined. For that, a listening experiment was designed and conducted with 18 normal-hearing and normal-seeing […]

Braun: Comparing different spatial audio reproduction methods regarding sound localization performance with and without simulated hearing loss

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Hearing loss is a prevalent issue that impairs the quality of life of those affected. Simulating this condition allows for further investigation of its perceptual aspects and improvement of existing hearing models. This study examines the effects of simulated sensorineural hearing loss on the ability to localize sound, a crucial aspect of auditory perception. Using […]

Castro: Auralization Techniques for Moving Listeners in Coupled Space

IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid) Kopernikusstr. 5, Aachen, Deutschland

Acoustic virtual reality (AVR) is a helpful tool that it is being used for different purposes. In architecture the use of AVR has been very advantageous for room acoustic simulation in different environments. In this work, the potential to simulate walking paths across connected rooms using AVR is analyzed, this research considers Johannes church in […]