Akustik-Blog

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 […]

A previous study showed that background noises and background speech deteriorate children’s listening comprehension, as children lack the ability to neglect irrelevant sounds. A classroomlike atmosphere is required for an investigation of the effect of noise on listening comprehension. As a result, there is a possibility that certain uncontrollable elements will arise throughout the experiment. […]

Head-related transfer functions (HRTFs) describe the filter process of the incident sound caused by reflection, refraction, diffraction and interference with the ear for a random source position in space to one of both ears. Similarly, hearing aid-related transfer functions (HARTFs) describe the sound path to the built-in microphones of a hearing aid device, e.g., behind […]

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 […]

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 […]

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. […]

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 […]