Dear subscribers of the Colloquium Newsletter,
we are happy to inform you about the next date of our Communication
Technology Colloquium.
*Wednesday, 30. November 2022**
**Speaker:* Frederick Pietschmann
*Time*: 14:00
*Location:* Lecture room 4G and
https://rwth.zoom.us/j/97904157921?pwd=SWpsbDl0MWhrWjY1ZkZaeFRoYmErZz09
Meeting-ID: 979 0415 7921
Passwort: 481650
*Master-Lecture*: Perceptual Optimization and Evaluation of a Binaural
Signal Modification Algorithm
With individualized binaural signals, it is possible to reproduce
auditory scenes such that the signal is perceived similar to the real
scene. However, perceptual similarity is no longer achieved when the
binaural signal doesn’t fully adapt to different listeners and different
orientations of the listener’s head. To address these problems, a
perceptually motivated algorithm referred to as the Binaural Cue
Adaptation (BCA) system has been developed at the Institute of
Communication Systems. The BCA system is capable of adding both
interactivity and individualization to existing binaural signals,
thereby achieving a higher degree of perceptual similarity to a
corresponding real auditory scene.
In this thesis, a perceptual optimization of the existing BCA system is
conducted in that new approaches for some components of the algorithm
are proposed, all parametrization options are identified and the overall
best parametrization is chosen. To identify the best parametrization,
both an isolated analysis of individual components is conducted and a
perceptually motivated optimization procedure for a full system analysis
is proposed and implemented.
Finally, a perceptual evaluation based on the result of the perceptual
optimization is realized. For this, two listening tests with a total
number of 17 participants are conducted – one for a normal and one for a
highly reverberant scenario. The results of these listening tests
suggest that signals produced by the optimized BCA system achieve a high
degree of perceptual plausibility for both reverberation scenarios, with
an averaged 2AFC probability to detect a BCA-generated signal of 0.563
for the normal scenario and 0.604 for the highly reverberant scenario.
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 fount at:
https://www.iks.rwth-aachen.de/aktuelles/kolloquium
--
Irina Esser
Institute of Communication Systems (IKS)
RWTH Aachen University
Muffeter Weg 3a, 52074 Aachen, Germany
+49 241 80 26958 (phone)
esser(a)iks.rwth-aachen.de
http://www.iks.rwth-aachen.de/