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Akustik-Blog

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Yang: Unsicherheiten der Quellparameterschätzung aus PKW-Vorbeifahrtgeräuschen

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

Die Hörbarmachung urbaner Lärmszenarien mittels Außenlärm-Auralisationen ist neben geeigneten Modellen zur Simulation von Schallausbreitung- und empfängern angewiesen auf Modelle von bewegten Quellen wie beispielsweise PKW. In dieser Arbeit wird die Unsicherheit der Quellparameterschätzung von Vorbeifahrtgeräuschen der Fahrzeuge untersucht. Dazu werden die realen Richtcharakteristiken des Mikrofons analysiert. Außerdem werden die Auswirkungen unsicherer Parameter bei der Berechnung […]

Wenzel: The influence of varying degree of visualization on spatial audio-visual congruency effects with short-term memory performance

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

When understanding and recalling spoken language, various complex processes take place in the brain. Certain circumstances can either impede or facilitate speech comprehension, e.g. visual stimuli such as lip movements or gestures. Although the field of cognitive psychology has already intensively studied short-term memory performance or listening effort in such situations, it mostly uses simple […]

Zhu: Examining the influence of visual stimuli on auditory selective attention in a virtual classroom

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

Auditory selective attention (ASA) is a common phenomenon which describes the ability to intentionally focus on a specific source of sound while ignoring other irrelevant sounds. Since in real life there are usually visual distractors in addition to auditory distractors, the effect of visual stimuli on ASA is also worth investigating. The purpose of this […]

Chang: Sound transmission through ventilation openings in building facades

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

In tropical countries, air conditioning systems are widely used to improve indoor climate. In many cases, natural ventilation can also provide thermal comfort for users with less energy consumption and better air quality as long as the pollution outdoors is not too high. However, openings in the facades for natural ventilation decrease the sound insulation. […]

Thompson: Implementation of a VST plugin host for the auralization application “Virtual Acoustics”

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

Implementing a Virtual Studio Technology (VST) host plugin with the auralization application Virtual Acoustics (VA) would allow VA to load and control the parameters of VST plugins as an input source to reproduce in a 3D scene. To approach this problem, I familiarized myself with Steinberg’s software, the VA platform, and subsequent software tools CMake, […]

Wegener: An Interface between Matlab and Unreal Engine for the Evaluation of Urban Scoundscapes

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

The simulation of audio-visual performance is despite technological advancements still a challenging task which usually requires researchers to simplify problems in order to reduce computational complexity, sacrificing both auditory and visual fidelity. This raises the question as to what degree a model can be simplified without a noticable loss of quality. In order to analyze […]

Fuchs: Erstellung eines akustischen Stadtmodells auf der Basis von Photogrammetrie

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

Angetrieben durch die Reduzierung von Lärmbelastung und Simulation von Schallausbreitung kann akustische virtuelle Realität (AVR) zur Durchführung von Untersuchungen eingesetzt werden. Zunächst wird bildbasierte photogrammetrische Software verwendet, mit der ein städtisches Küstengebiet nachgebildet wird, um eine visuelle Darstellung der komplexen Umgebung zu generieren. Photogrammetrie erzeugt fotografische Punktwolken, die für immersive Anwendungen oder traditionelle Wiedergabemedien zu […]

Burger: Internship with Max-Planck-Institute for Brain Research

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

For my internship I joined the “Social Systems and Circuits Group” which is part of the MPI for Brain Research, located in Frankfurt am Main, Germany. It focuses on identifying neural mechanisms for the processing and production of socially meaningful communication, with a particular emphasis on vocal communication. The research is carried out by studying […]

Sani: Working with Multi Channel Audio: Setting up demos in SCaLAr

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

Working with 3D audio formats, especially Ambisonics, is not as straight-forward as traditional channel-based formats like stereo or 5.1. This gets even more complex with irregular loudspeaker arrays like SCaLAr: it is unlike any conventional speaker configuration, and therefore requires combinations of tools to achieve a relatively easy “drag and drop and play” situation.  I […]

Zhou: Short-term memory performance under varying signal-to-noise ratio

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

The term irrelevant sound effect (ISE) refers to a significant reduction in the immediate serial recall of lists of presented items, usually digits or letters, when irrelevant auditory sound is presented together with the items to be memorized. This study aimed to investigate the impact of signal-to-noise ratio (SNR) and presentation modality on short-term memory […]

Hillert: Implementation and Evaluation of Models for the Simulation of Cochlear Hearing Loss

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

Sensorineural hearing loss is a common problem and causes a decreasing quality of life for the people affected. For several reasons, the realistic simulation of these impairments may be considered desirable. These include raising awareness for the problem in the general public, extending the capabilities of hearing models used to predict psychoacoustic parameters, and designing […]

Jain: Text Mining of Vocabulary for Architectural and Acoustic Assessment

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

We often see a disconnect between how people express themselves through language and how those words are perceived or interpreted. This gap exists, for example, between architects who strive to meet client expectations and users of the designed spaces who express their needs and requirements. We aim to bridge this gap by investigating the vocabulary […]

Schäfer: Virtual Acoustics (VA) v2022a: General concept, new features and use cases

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

Virtual Acoustics (VA) is a powerful framework for the auralization of virtual scenes and is developed at the Institute for Hearing Technology and Acoustics. It uses physics-based models for source, sound propagation and spatialization at the receiver and allows rendering scenes in real-time. Due to its modularity, VA can be applied to a variety of […]

Gierden: Praxissemester with AQ Solutions

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

I conducted my internship at the company AQ Solutions which produces medical implants. It focuses on prostheses for revision surgery, including standard as well as patient specific implants which are all produced using additive manufacturing. I was part of a project concerning patient specific hip prostheses. My task included the automation of two finite-element-analyses (FEA) […]

Schmeling: Internship with fka GmbH, Aachen

Zoom-Meeting

The internship was performed in the Human-Machine-Interaction group within the “Automated Driving” business area and deals with two main projects. The first project deals with the development of a system for objective ergonomic evaluation of HMI steering concepts using 3D-cameras (Microsoft Kinect), computer vision and body tracking. The main task of the second project was […]

Gómez Belmonte: Evaluation of the validity of a theoretical model in USMW

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

Ultrasonic metal welding (USMW) is a technique of welding small-area materials by means of high-frequency vibration friction welding. Despite its wide use, it is still hard to monitor the welding process, and optimise the strengths of the welds it produces. The objective of this work is to offer a simple and automated characterization of the […]

Alvarez-Morales: Cathedral acoustics through experimental measurements and simulation techniques

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

Cathedrals are significant pieces of architecture, symbols of the European culture, whose grandiosity is the result not only of their extraordinary visual features, but also of their remarkable acoustic environment. This talk summarises the methodology utilised to analyse and preserve the acoustics of a sample of European cathedrals, which is based on the analysis of […]

Nakajima: Trends in concert hall design practice

Zoom-Meeting

Tateo Nakajima will give a talk that will present a selection of his projects and the evolution of his design practice, in light of the key influences that have shaped his work, current trends that he sees in the industry that impact his work. Tateo Nakajima was former Partner of Artec Consultants inc (NY), currently […]

Holländer: The influence of individual, individualized and non-individualized HRTFs on the auditory selective attention of children

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

A listening experiment based on a developed paradigm to investigate the intentional switching of auditory selective attention with binaural sound reproduction was conducted to examine the influence of generic, individualized and individual head-related transfer functions (HRTFs) on the auditory selective attention of children. For many applications, the generic HRTF of an adult artificial head is […]

Heinrichs: Schallstreuung an Straßenoberflächen

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

Für die möglichst präzise Auralisation von virtuellen Umgebungen ist die Kenntnis des genauen Schallfeldes der akustischen Szene notwendig. Einen Anteil zum diffusen Schall liefert dabei die Streuung an unebenen Oberflächen. In virtuellen Straßenumgebungen stellt daher die Streuung durch die Straßenoberfläche selbst einen möglichen Einfluss auf das Schallfeld dar. In der vorgestellten Arbeit werden die Schallstreuungseigenschaften […]