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Käppel: Untersuchungen zu Wiedergabeverfahren für irreguläre Lautsprecherarrays im Nahfeld

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

Ambisonics ist ein weitverbreitetes Audiowiedergabeformat zur lautsprecherbasierten Reproduktion räumlicher Schallfelder. Klassische Ambisonics-Decoder basieren auf der Annahme ebener Wellen. Damit eine Fernfeldnäherung ebener Wellen für die Lautsprecher zulässig ist, müssen diese ein Sampling der Kugel mit konstantem und ausreichend großem Abstand zum Hörer darstellen. Für die Realisierung eines Arrays in einer kleinen Hörkabine müssen die Lautsprecher […]

Schmitz: Identifying Characteristics of Intentional Auditory Attention Switches in Electroencephalography Data

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

Intentional switching of auditory selective attention (ASA) in the context of electrophysiological data, such as those from the electroencephalography (EEG), has yet been little explored. However, the combination of both components could be extremely useful to further develop i.e. attention-steered hearing aids. ASA is the cognitive ability to focus on an auditory stimulus while ignoring […]

Braun: Subjektive und objektive Evaluierung der Akustik in Hörsälen der RWTH Aachen University

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

Das Ziel der Arbeit war, den Zustand der Raumakustik in Hörsälen der RWTH Aachen University zu erfassen und die Daten zu evaluieren. Dazu wurden Messungen der Raumimpulsantwort in neun Hörsälen auf Basis der DIN EN ISO 3382-1 durchgeführt. Anhand der Impulsantwort wurden raumakustische Gütemaße berechnet, die für eine gute Sprachverständlichkeit wichtig sind. Zur Evaluierung wurde […]

Hillert: Industriepraktikum als Projektingenieur in der technischen Gebäudeausrüstung bei WUP Ingenieure

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

Das studienabschließende Industriepraktikum fand in der Elektro-Abteilung bei WUP Ingenieure statt. Das Unternehmen befasst sich schwerpunktmäßig mit der Planung mehrerer Gewerke der technischen Gebäudeausrüstung. Die Abteilung bestand aus acht Ingenieuren, in deren Team meine Mitarbeit vom 01.12.2022 bis 12.05.2023 in der Rolle als Fachplaner erfolgte. Das Hauptziel innerhalb der Firma WUP war zunächst die Einarbeitung […]

Selvi: Industrial Internship at HEAD Acoustics GmbH

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

This presentation is about the industrial internship completed at HEAD acoustics GmbH in the department Sound Perception & Assessment. Two major tasks are presented. First of these is about the measurement and evaluation of the room acoustics properties of a listening room, based on the ITU Recommendation ITU-R BS.1116-3 concerning the listening conditions of reference […]

Sun: Development of productive software systems in the area of capacity validation of energy supply systems

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

This talk is about an industrial internship at FGH GmbH from 01.06.2023 to 20.10.2023, working as a software developer in the team “Flexible Softwarelösungen”. For more than 100 years, FGH GmbH has been working with its member companies from the entire energy sector and electrotechnical solutions for maintaining the security of supply of electrical energy. […]

Dürksen: Untersuchungen zur Höranstrengung bei Grundschulkindern in verschiedenen Lärmsituationen

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

Kommunikation ist ein wichtiger Bestandteil der sozialen Interaktion im Alltag. Der kognitive Aufwand für das Verstehen und Verarbeiten von Sprache wird als Höranstrengung bezeichnet. Diese ist unter anderem abhängig von der Lärmumgebung und der verfügbaren kognitiven Kapazität. Wenn mehrere Aufgaben gleichzeitig zu bewältigen sind, müssen die begrenzten Ressourcen aufgeteilt werden. Beansprucht das Sprachverstehen mehr Verarbeitungsressourcen, […]

Dai: The Influence of Room Acoustics on Auditory Selective Attention in a Virtual Classroom

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

In this thesis the influence of room acoustics on auditory selective attention was examined. A hearing experiment in virtual realty was conducted with 16 normal hearing and normal seeing participants at the Institute for Hearing Technology and Acoustics, RWTH Aachen University. For the Experiment, three classroom scenarios representing no room acoustics, good room acoustics (T30=0.48s, […]

Kamps: Synthesis of aircraft sound emission for auralization

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

Aircraft sound emissions are often associated with health risks for humans. Consequently, reducing the noise levels has been a research goal for many years. However, a simple level reduction does not consider the impact that specific characteristics of aircraft sound might have on noise annoyance. This issue is addressed by the auralization of aircraft noise […]

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 […]