Im Rahmen des Praktikums wurde ein audio-basiertes Sensorsystem zur kontinuierlichen Überwachung respiratorischer Signale weiterentwickelt und für den produktiven Einsatz vorbereitet. Die Arbeit umfasste die Verbesserung einer Echtzeit-Signalverarbeitungspipeline, die Reduktion von Fehlalarmen unter realistischen akustischen Bedingungen sowie die Entwicklung robuster Machine-Learning-Modelle zur Hustenklassifikation. Besonderes Augenmerk lag auf der Datenqualität, der Generalisierungsfähigkeit gegenüber ungesehenen Nutzern sowie auf […]

Active Noise Cancellation (ANC) and Talk-Through (TT) modes are common features in modern headsets. ANC typically provides enough attenuation that background noise becomes difficult to characterise. In this internship, several warning signals, such as passing cars and shouted speech, were recorded and used as background noise, and multiple headsets with ANC and TT were evaluated […]

During the internship at GoerTek Inc., the focus was primarily on the analysis and optimization of acoustic systems for “True Wireless Stereo Earbuds”, so-called TWS devices. The main responsibilities included conducting both subjective and objective tests based on acoustic performance, evaluating products through metrics such as frequency response curves, distortion curves, and manual listening tests. […]