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Refractive power measurements serve as the primary quality standard in the automotive glazing industry. In the light of autonomous driving new optical metrics are becoming more and more popular for specifying optical quality requirements for the windshield. Nevertheless, the link between those quantities and the refractive power needs to be established in order to ensure a holistic requirement profile for the windshield. As a consequence, traceable high-resolution refractive power measurements are still required for the glass quality assessment. Standard measurement systems using Moiré patterns for refractive power monitoring in the automotive industry are highly resolution limited, wherefore they are insufficient for evaluating the camera window area. Consequently, there is a need for more sophisticated refractive power measurement systems that provide a higher spatial resolution. In addition, a calibration procedure has to be developed in order to guarantee for comparability of the measurement results. For increasing the resolution, a measurement setup based on an auto-correlation algorithm is tested in this paper. Furthermore, a calibration procedure is established by using a single reference lens with a nominal refractive power of 100 km-1. For the calibration of the entire measurement range of the system, the lens is tilted by an inclination angle orthogonal to the optical axis. The effective refractive power is then given by the Kerkhof model. By adopting the measurement and calibration procedure presented in this paper, glass suppliers in the automotive industry will be able to detect relevant manufacturing defects within the camera window area more accurately paving the way for a holistic quality assurance of the windshield for future advanced driver-assistance system (ADAS) functionalities. Concurrently, the traceability of the measurement results is ensured by establishing a calibration chain based on a single reference lens, which is traced back to international standards.
Despite the higher uptake of digital media also in older age groups, there are still challenges for people of high ages and with cognitive or motoric problems, which prevent them from learning and using devices like smartphones or tablets. Tangible user interfaces provide an opportunity to connect these people to social media, thereby increasing their digital participation in society and reducing loneliness. In this paper, we discuss the challenges of intergenerational communication and research the opportunities affiliated with tangible technologies to overcome technology barriers for adults of high ages. We present a hybrid system for social media interactions between young smartphone users and their old relatives, who do not use mobile technologies. The system consists of a tangible user interface designed specifically for old adults that connects to a standard mobile messenger service. TAMI was designed in a user-centered process to fulfill the needs of older adults and tested in a longer-term field study with pairs of young and old relatives.
Diese Bachelorarbeit untersucht die Frage, welchen Einfluss Sounddesign auf die Empfindung von Emotion, Empathie und Antizipation beim Konsumieren von Filmen hat. Dafür wurde die Arbeitshypothese angenommen, dass ein positiv gestaltetes Sounddesign bei den Zuschauenden zu mehr positiven Emotionen, höherer Empathie und positiver Handlungserwartung führt, während ein negatives Sounddesign zu negativeren Emotionen, geringerer Empathie und negativer Handlungserwartung führt.
Zunächst werden in dem theoretischen Teil der Arbeit das Sounddesign und seine Rolle im Film betrachtet, gefolgt von der Untersuchung der Auswirkungen von Ton auf die menschliche Wahrnehmung, sowie einer Darstellung der Grundlagen von Emotion, Empathie und Antizipation.
Um die Forschungsfrage zu beantworten und die Arbeitshypothesen zu überprüfen, wurde eine quantitative Studie mittels Online-Umfrage durchgeführt, in der die Teilnehmenden zwei Filmausschnitte zu sehen bekamen. Die Teilnehmenden wurden dabei in zwei Gruppen mit jeweils positivem bzw. negativem Sounddesign aufgeteilt. Der Einfluss auf die wahrgenommenen Emotionen, Empathie und die antizipierte Handlung wurde anschließend mittels eines Fragebogens erhoben und statistisch ausgewertet.
Es wurde festgestellt, dass das Sounddesign teilweise deutliche Effekte auf wahrgenommene Emotionen hatte, insbesondere auf negative Emotionen. Es waren ebenfalls Tendenzen in Bezug auf Empathie und Antizipation erkennbar, die darauf hinwiesen, dass Sounddesign diese Bereiche beeinflusste. Eine zusätzliche Untersuchung des Einflusses von Audiogeräten auf die Stärke der ermittelten Effekte zeigte, dass Kopfhörer/Lautsprecher im Vergleich zu Handy-/Laptoplautsprechern zu einem stärkeren Effekt des Sounddesigns führen konnten.
Diese Arbeit kann zusammenfassend feststellen, dass ein Einfluss von Sounddesign auf Emotion, Empathie und Handlungsantizipation anzunehmen ist.
Over the past decades, research in room acoustics has established several derivative measures of an impulse response, some of which are incorporated in the ISO 3382 standards. These parameters intend to represent perceptual qualities, but were developed without a consistent modeling of room acoustical perception. More recent research proposed comprehensive inventories of room acoustic perception that are purely based on evaluations by human subjects, such as the Room Acoustical Quality Index (RAQI). In this work RA-QI scores acquired for 70 room impulse responses were predicted from room acoustical parameters. Except for Reverberance, the prediction of RAQI factors performed rather poor. In most cases, the sound source had a greater impact on RAQI scores. All analyses are published in an online tool, where users can upload omnidirectional and binaural impulse responses, and instantly obtain and visualize several physical descriptors, as well as predicted RAQI scores for three different sound sources. So far, acceptable prediction accuracy is achieved for Reverberance, Strength, Irregular Decay, Clarity and Intimacy. Larger data sets of evaluated impulse responses are required to improve the model performance and enable reliable predictions of room acoustical quality. Therefore, the administration of RAQI evaluations within the website is currently being developed.
Rechtsextremismus
(2023)