Dear subscribers of the colloquium newsletter,
we are happy to inform you about the next date of our Communication Technology Colloquium.
*Thursday, October 26, 2023* *Speaker*: Abisman Balachanthiran *Time:* 11:00 a.m. *Location*: hybrid - Lecture room 4G and https://rwth.zoom.us/j/61215027648?pwd=MTJvayt5bkdka04raWZVempPZGE0Zz09
Meeting-ID: 612 1502 7648 Passwort: 380386
*Bachelor-Lecture: **
Evaluation of Dereverberation Methods in the Context of Spatial Modification of Binaural Signals*
A new binaural signal modification system is proposed based on the Binaural Cue Adapta- tion (BCA ) algorithm and it is evaluated with existing BCA algorithms. The BCA algorithm dynamically adjusts binaural signals according to the listener’s head movements using a head tracker. This is done by splitting the signal into two components. The system under evaluation proposed in this thesis considers the reverberation as temporally correlated with the source signal, in contrast to the baseline BCA system. With the implemen- tation of the Weighted Prediction Error ( WPE ) dereverberation algorithm, the BCA system has a component that explicitly removes reverberation. In addition, an online implementation of the BCA system is presented for evaluation purposes. The three systems presented in this thesis - the baseline BCA system, the proposed offline BCA system and the online BCA system - were evaluated using a MUSHRA listening test. Based on questions about basic audio quality, source direction and reverberation perception, 15 participants evaluated the three systems for 4 different scenarios. A statistically significant difference between the evaluated systems could not be found in terms of source localisation quality. Statistically significant differences were found in the ratings of basic audio quality and the perception of reverberation, with the system using an online implementation of WPE performing best.
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: https://www.iks.rwth-aachen.de/aktuelles/kolloquium
Simone Sedgwick Secretariat Institute of Communication Systems(IKS) Prof. Dr.-Ing. Peter Jax RWTH Aachen University Muffeter Weg 3a, 52074 Aachen, Germany +49 241 80 26956(phone) +49 241 80 22254(fax) sedgwick@iks.rwth-aachen.de https://www.iks.rwth-aachen.de/