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Akustik-Blog

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Tillmann: Praxissemester bei der HEAD acoustics GmbH

Zoom-Meeting

HEAD acoustics ist in Bereichen der ganzheitlichen Akustiklösungen, Schall- und Schwingungsanalysen und Telekommunikation tätig und ist hier eines der weltweit führenden Unternehmen. Meine Aufgabe war es, verschiedene Tiefenmesssysteme zu testen und miteinander zu vergleichen. Dafür wurde von verschiedenen Modellen von Tiefenkameras zum Beispiel die Genauigkeit abhängig vom Messabstand, die Genauigkeit abhängig vom Blickwinkel oder die […]

Alves: Classroom acoustics in large universities: the low acoustic quality of standardized rooms

Zoom-Meeting

People use speech to communicate, sharing information, knowledge, and stories, but the act of speaking and listening is no guarantee of a clear understanding. Schools are places where speaking and listening are primary methods of communication. In Brazil, it is a common practice to design a standard classroom and replicate it across the institution, be […]

Tegetmeyer-Kleine: Praxissemester beim Fraunhofer-Institut für Kommunikation, Informationsverarbeitung und Ergonomie

Zoom-Meeting

Die Fraunhofer-Gesellschaft ist die größte Organisation für angewandte Forschung in Europa. In der Abteilung Sensordaten- und Informationsfusion (SDF) werden anspruchsvolle Verfahren der Informationsauswertung für Aufgaben der militärischen und zivilen Sicherheit erforscht, entwickelt und evaluiert. Basierend auf jahrzehntelanger Erfahrung bietet die Abteilung SDF Forschung und Entwicklung von konzeptuellen Studien bis hin zu prototypischen Integrationssystemen.Während meines sechsmonatigen […]

Uribe: Internship with HEAD acoustics GmbH

Zoom-Meeting

HEAD acoustics GmbH located in Herzogenrath near Aachen, Germany is one of the world ́s leading companies for integrated acoustics solutions as well as sound and vibration analysis. During my internship, I have been working in the Telecom Consult Department to measure the Mean Opinion Score (MOS) in an End-to-end (E2E) communication system, correlating instrumental […]

Klein: Praxissemester bei Müller-BBM

Zoom-Meeting

Die Müller-BBM GmbH ist eine der führenden Ingenieurgesellschaften für Beratungsleistungen, Prüfungen und Planungen in allen Bereichen der Akustik, der Bauphysik und des Umweltschutzes. Der Geschäftsbereich Technik vereint interdisziplinäre Kompetenz und langjährige Erfahrung für Industrie, Gewerbe und Verkehr. Während meines Praktikums in der Niederlassung Gelsenkirchen, war ich im Bereich der Industrieakustik tätig. Hier habe ich schalltechnische […]

Tavoosi: Data mining of weather conditions for sound propagation in the atmosphere

Zoom-Meeting

In the context of the auralization of acoustic scenes in outdoor scenarios, the effects of the atmosphere on sound propagation are of crucial importance. Ray tracing is a common method for tracking paths between sources and receivers and can be used to compute atmospheric transfer functions when the height-dependent physical properties of the atmosphere are […]

Abi Raad: Transfer path analysis of Ultrasonic Metal Welding

Zoom-Meeting

Ultrasonic Metal Welding (USMW) is a technique used for numerous industrial applications. However, the welding process is in fact poorly known, leading to unexplained variations of strength. This presentation will show some recent work about studying the welding process based on measurements and the most recent model from the literature. From the literature model, a […]

Herrmann: Machine Learning zur Modellierung des Kanteneffekts bei porösen Absorbern

Zoom-Meeting

Theoretischen Modellen für das Schallfeld über porösen Absorbern liegt in der Regel die Annahme einer mindestens in einer Dimension unendlich ausgedehnten Materialschicht zugrunde. In der praktischen Anwendung, zum Beispiel bei der inversen Bestimmung von Material- oder Oberflächeneigenschaften aus Schalldruckmessungen über allseitig finiten Proben, haben derartige analytische Ansätze entsprechend Grenzen, sodass zusätzliche Beugungsfelder an den Kanten […]

Rummler: Comparison of Multi-Exponential Decay Constant Estimation Methods

Zoom-Meeting

The measurement of the absorption coefficient in reverberation chambers according to the international standard ISO-354 shows a poor reproducibility between laboratories. One reason is the non-uniform distribution of absorption due to the placement of the test object. This causes shorter decay times for modes with oblique and perpendicular incidence on the absorber. Modes propagating parallel […]

Psarra: Contextual Sensibility and Influence in the Architecture of Carlo Scarpa

Zoom-Meeting

Sophia Psarra The Bartlett School of Architecture University College London Venice with its many islands in the lagoon is a city that has throughout history hosted many diverse innovations. From architecture, painting and printing to cartography, hydrology and politics, Venice has never ceased to inspire the creative imagination. Five hundred years since its zenith, and […]

Schäfer: The ITA-Toolbox COMSOL interface

Zoom-Meeting

Acoustic simulations become a more and more important toolset for industry and research. For a few years now, our institute uses COMSOL Multiphysics for numerical simulations, e.g. FEM and BEM, in various fields of acoustics. For proper processing of simulation results, we usually rely on MATLAB and the ITA-Toolbox. Although COMSOL provides a MATLAB interface […]

Schäfer: Ray tracing for efficient simulation of curved sound propagation paths: Towards real-time auralization of aircraft noise

Zoom-Meeting

Thanks to modern auralization methods, simulated aircraft flyovers can be experienced in virtual environments. Listening to such an auralization provides a more sophisticated impression of annoyance of aircraft noise in real scenarios than reading averaged sound pressure levels or noise maps. For proper auralization results, translation and refraction due to wind and to inhomogeneity of […]

Llorca-Bofi: The IHTApark 3D model

Zoom-Meeting

As a basis for potential sound perception studies in outdoor environments, the PAAD group is developing a 3D model of the adjacent outdoor area to the institute. The original request was to achieve an ecologically vaild representation of the outdoor environment, including different weather characterizations. In this presentation we will present the current state of […]

Glosauer: Evaluation of suitable parameters for describing heart rate variability with respect to auditory selective attention switches

Zoom-Meeting

Noise can cause stress, which leads to measurable physical reactions as well as it can impair intentional switching of auditory selective attention (ASA). In children, this can reduce the learning progress and thus disturb their development. The relation of measurable physical stress reactions and intentional switching of ASA is investigated in current research with the […]

Kang: Designing Soundscape in urban open public spaces: a framework and potentials

Zoom-Meeting

Jian Kang Bartlett School of Environment, Energy and Resources University College London This talk explores putting soundscape into the intentional design process, by proposing a soundscape design framework for urban open public spaces, including four key components: characteristics of each sound source, acoustic effects of the space, social/demographic aspect of the users, and other aspects […]

Engel: Determination of the soundscape cost index through soundscape data collection and the use of psychoacoustic metrics

Zoom-Meeting

Soundscape studies are showing the importance and the benefits regarding the sonic the environment in our daily lives. The soundscape paradigm shift highlights not just negative aspects, common on environmental noise studies, but also how the sonic environment can be recovering to the welfare of communities. Thinking on the valuation of settings, past studies focused […]

Uribe Corral: Vibroacoustic modelling of an ultrasonic metal welding process

Zoom-Meeting

Ultrasonic Metal Welding (USMW) is solid-state bonding process where two metal pieces are joined by the application of ultrasonic vibrations. This thesis focuses on the study of the sonotrode during a free run to understand the airborne sound field generated during the welding process. Simulation data are generated using COMSOL Multiphysics to model the physics […]

Balint: Evaluating the decay of sound

Zoom-Meeting

The absorption coefficient is a central parameter in the room acoustic design process. It can be measured in an impedance tube for normal sound incidence or in the reverberation chamber for random incidence. To guarantee a standardized test environment for reverberation chambers, the international standard ISO 354 suggests a measurement procedure to increase the diffusivity […]

Liu: Internship with Huawei Deutschland

Zoom-Meeting

Huawei is founded in 1987 in Shenzhen, China. Huawei is a leading global provider of information and communications technology (ICT) infrastructure and smart devices. Starting from the 1st of Sep in 2018, I started my internship at Huawei Technologies Germany GmbH in Dusseldorf. My internship lasts five months in total, and the activity ends on […]

Palenda: Internship with Klang Technologies

Zoom-Meeting

Aachen based, KLANG:technologies produces Hard- and Software to deliver immersive, three dimensional in-ear monitor mixes for musicians. This is achieved using binaural technologies. The focus is to give the musician a simple to use interface. During the internship, the task was to develop a tool that can automatically measure KLANG products and determine if the […]