Dear subscribers of the colloquium newsletter, we are happy to inform you about the next date of our Communication Technology Colloquium. *Friday, October 8, 2021* *Speaker:* Frederick Pietschmann *Time:* 10:00 a.m. *Location*: https://rwth.zoom.us/j/97904157921?pwd=SWpsbDl0MWhrWjY1ZkZaeFRoYmErZz09                     Meeting-ID: 979 0415 7921                     Passwort: 481650 *Bachelor Lecture*: Model-Based Algorithms for Retrospective Individualization of Binaural Signals With binaural signals, it is possible to capture the sensation of spatial hearing that humans are used to from real-life auditory scenes. However, because binaural recordings are always individualized for a specific target person, the authenticity of a binaural recording is perceived differently by different listeners. It is therefore desirable that a binaural recording is always individualized for the respective listener. In this thesis, the existing Binaural Cue Adaptation (BCA) system from the Institute of Communication Systems is adjusted and reinterpreted for it to be able to retrospectively individualize an existing binaural signal for a new target person. Existing approaches to the main components of the BCA system, the Localization block and the Modification block, are reviewed and analyzed and multiple new concepts and ideas are introduced and algebraically described: New optimization target functions, a concept for joint optimization over multiple frequencies and multiple approaches that attempt to lessen the impact of artifacts which may occur due to model mismatches and / or erroneous location estimates. A theoretical evaluation is conducted in which the localization performance of both existing and new approaches is benchmarked. The results confirm that some of the newly proposed ideas and concepts improve the overall performance of the BCA system. All interested parties are cordially invited, registration is not required. General information on the colloquium, as well as a current list of dates of the Communication Technology Colloquium can be found at: http://www.iks.rwth-aachen.de/aktuelles/kolloquium -- Irina Ronkartz Institute of Communication Systems (IKS) RWTH Aachen University Muffeter Weg 3a, 52074 Aachen, Germany +49 241 80 26958 (phone) ronkartz@iks.rwth-aachen.de http://www.iks.rwth-aachen.de/