Akustik-Blog

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 […]

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 […]

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 […]

The scattering coefficient is a crucial parameter in acoustics, as it plays a significant role in characterizing the scattering of sound waves from surfaces and materials. In this study, we focus on the free-field simulation of the scattering coefficient. First, we validate the scattering coefficient against analytical solutions of standard surfaces, such as sine and […]

Many public authorities strive for creating more livable cities in future. To better understand what parameters need to be optimized to achieve this, it is necessary to study how humans perceive urban spaces. A proposed technique to compare different environments is the Individual Vocabulary Profiling (IVP). This study investigates how people evaluate an urban environment […]

Die Berechnungszeit eines Audioblocks ist für Echtzeit-Auralisationen von entschei- dender Bedeutung, da sie die realisierbare Latenz nach unten begrenzt. Diese Arbeit untersucht die Auswirkung verschiedener Konfigurationsparameter auf die Laufzeit der Echtzeit-Auralisations-Software Virtual Acoustics (VA). Dazu werden theoretisch fun- dierte Tests implementiert, die die Laufzeitänderung durch Variation von Parametern und Szenekonfigurationen messen. Die gemessenen und erwarteten […]

Abstract: In this thesis, the processing of verbal and tonal stimuli in the brain was investigated. It was assessed whether implicit pitch-to-digit as sociations influence performance in a verbal serial recall task. In the experiment, 28 participants had to remember visually presented nine digit-sequences in four different presentation conditions: when digits were only presented visually, […]

The acoustic scattering of surfaces is very important in all aspects of room acoustics like in concert halls and reverberation rooms. The sound propagation can be calculated effectively and in high quality by geometrical simulation methods. Nevertheless, this requires reliable scattering coefficients. In this thesis, the random-incidence scattering coefficient will be measured after ISO 17497-1 […]

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 […]