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Akustik-Blog

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Knappe: Digitale Zwillinge für das PKW-Vorbeifahrtgeräusch – Komponenten und deren Zusammenwirken

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

Die Notwendigkeit gesetzlicher Regulierungen des Außengeräuschs von Personenkraftwagen (PKW) resultiert aus dem Einfluss von Lärm auf das menschliche Wohlbefinden. Die Messung von PKW-Außengeräuschen wird unter genormten Bedingungen nach gesetzlichen Regulierungen als sogenannte Vorbeifahrtmessung durchgeführt. Die jüngste gesetzliche Norm der „Economic Comission of Europe“ (ECE) ist die ECE R51.03. Die Motivation der vorliegenden Arbeit basiert auf […]

Dohmen: The effects of environmental noise on children’s mental health and cognition: exploring the interaction between the physical and social environment

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

A good part of the global burden of disease can be attributed to environmental factors, such as noise. With a high prevalence of mental health problems in lower socioeconomic groups it is important to understand how environmental exposures contribute to mental health. The focus of my research is on children as children are more vulnerable […]

Castro: Internship with HEAD acoustics

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

This presentation is about the work done during the Internship period, the main topic is related to the psychoacoustic parameter sharpness and the results obtained in listening experiments in regard to this parameter, the analysis of the signals and comparisons between experimental and theoretical results will also be presented. Some hypotheses about these differences will […]

Gierden: Investigation of the relationship between switching auditory selective attention and heart rate variability of children

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

Noise is known to influence human cognitive performance such as auditory selective attention. Not only cognitive abilities, but also physiological reactions can be measured when being exposed to noise. In comparison to adults, children are even more exposed to noise. Especially in educational buildings, such as schools, children are confronted with many different sound sources, […]

Ji: Extending a paradigm on the intentional switching of auditory selective attention towards complex stimuli

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

Auditory selective attention (ASA) refers to the mental ability to resist distractors and to focus on a specific sound in a complex acoustic environment. Revealing the factors that affect people’s ASA can help to improve student’s learning environment. Thus, studies have been conducted both in real life and virtual reality (VR) environments. This study aimed to make a […]

Akdag: Psychoacoustic Effects of Air Diffuser Noises at the Same Loudness Level

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

This study investigates the impact of air diffuser noise on human well-being, which is relevant due to its widespread use in residential and commercial buildings. The objective is to determine the types of air diffusers that produce the most pleasant noise by conducting a pairwise comparison listening experiment with 32 participants. Seven stimuli were recorded […]

Nugraheni: Numerical simulation and evaluation of scattering coefficients of building facades

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

The acoustic propagation of sound in the open field or in the interior can be calculated efficiently and in high quality by geometric simulation methods. However, for correct simulations, accurate surface parameters such as absorption and scattering coefficients are required. In this thesis, the scattering coefficient of different facades is simulated with established numerical methods. […]

Mika: Internship at topsystem GmbH

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

The presentation will introduce the company and give an insight into the practical work experience during the internship. The focus of the talk will lie on the explanation of the design and manufacturing of a Wifi Control Board. All steps, from the part selection, to schematic design, to the final assembly will be discussed. Melden […]

Möhlmann: Finite Element Simulation of the Occlusion Effect in the Ear Canal

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

English: When the ear canal is occluded by devices such as headphones or hearing aids, the auditory perception of bone-conducted sounds is increased, which results, e.g., in an alteration of one’s own voice perception. The effect is caused by a motion of the skull that deforms the cartilage and bone to radiate sound into the […]

Merten: Performance of short term memory under the influence of (a)synchronous audio visual speech stimuli

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

Nowadays, more and more conversations are conducted via technical aids, such as computers or mobile phones. In technology, there can be connection or processing problems that lead to disturbances in playback. As a result, audio and video signals, for example, are time-delayed, which can be noticeable and disturbing. Since short-term memory is needed, especially in […]

Sun: Numerical analysis of anvil vibrations during Ultrasonic Metal Welding

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

Ultrasonic Metal Welding (USMW) is a widely used manufacturing technology for joining metal components in modern industry. The metal sheets which are placed above the anvil need to be bonded. The sonotrode, which is also called the horn, vibrates at high frequency and on the top of the metal sheets. The constant clamp force applied […]

Merino-Martinez: Acoustic imaging in aeroacoustic applications

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

Aircraft and wind turbine noise emissions are increasingly important issues for society due to the noise annoyance and negative health effects in local communities, as well as for the industry due to operational limitations imposed by noise regulations. The field of aeroacoustics aims at understanding the noise generation mechanisms behind these emissions and, ultimately, device […]

Lautenbach: The acoustical design process of a classical concert hall

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

In this talk we will follow the acoustical investigations in the design process of a classical concert hall, from the first talk with the client, listening to several halls, setting the goals, acoustic modelling: computational and with a scale model, the interaction with the architect, construction and HVAC engineers, to the measurements and first rehearsals […]

Li: Short-term memory performance under audio-visual mismatch of lip-movements

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

In modern life, the proportion of computer-mediated conversations is gradually increasing, e.g., lectures via zoom, or virtual reality (VR). In real-life, information is perceived multi-modal: in addition to visual information, sound as auditory information is received and remembered along with coherent visual cues, such as lip-movement. However, due to the instability of the network in […]

Infantes: Development of a methodology for architectural reconstructions using point clouds including data capture and management

Zoom-Meeting

Point Clouds has been used in architectural representation and digital reconstruction, usually are called Digital Twins. These models should offer measurement accuracy and complete compatibility in all phases of architectural design and simulation. The standards of data treatment and the pipework available are licensed by software companies unable to offer the control of the information […]

Dokhanchi: Measurement of the Indoor Air Temperature Distribution using Acoustic Travel-Time TOMography (ATOM)

IHTA Seminarraum (60 Personen) Kopernikusstrasse 5, Aachen

To assess the thermal comfort in the indoor spaces such as office rooms generally a large number of thermal sensors is mounted in the workplaces. The main drawback of this conventional method is recording data at certain locations instead of distribution of the target parameter in the entire room including the occupant zone. To overcome […]

Li: Geometry reduction of acoustic models

IHTA Seminarraum (60 Personen) Kopernikusstrasse 5, Aachen

Audio-visual experiences of modeled spaces play a key role when studying the human perception of the built environment, and the results should give us an intuitive sense of the real situation. Acoustic models need a low number of polygons in order to be simulated efficiently. It is at the same time important to retain acoustic […]

Schmitt: The influence of realistic background noise on auditory selective attention

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

Every day we are exposed to background noise with a multitude of simultaneous noises from different origin, for example on the bus, at work, or at a party. Nevertheless, we can listen to specific sounds or voices out of this mixture due to our ability of auditory selective attention, which enables us to focus on […]

Bender: Internship at HEAD acoustics GmbH – NVH department

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

This presentation will give an overview on my internship in the NVH (noise-vibration-harshness) research department of HEAD acoustics. First, the company and the work environment are introduced. As my tasks were based on psychoacoustic metrics, I will give a short introduction into this topic. Lastly, some tasks handled by me during the internship will be […]

Schmitz: Internship with HEAD acoustics GmbH – Telecom department

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

The presentation will be about my tasks and activities at HEAD acoustics GmbH. During the entirety of my industrial internship, I was part of the Telecommunications Research and Standardisation department. The main topic of the talk is spatial audio (Ambisonics) and the development of suitable audio codecs and standards for such signals. First, I will […]