Sehr geehrte Abonnenten des Kolloquium-Newsletters,
gerne informieren wir Sie über den nächsten Termin unseres
Kommunikationstechnischen Kolloquiums.
*Mittwoch, 15. Juli 2020*
*Vortragender:* Jérôme Biot
*Zeit:* 11:00 Uhr
*Ort*:
https://rwth.zoom.us/j/97904157921?pwd=SWpsbDl0MWhrWjY1ZkZaeFRoYmErZz09
Meeting-ID: 979 0415 7921
Passwort: 481650
*Master-Vortrag*: Acoustic Head-Tracking in Adaptive Crosstalk
Cancellation Systems
In order to accurately reproduce an acoustic scene for a listener, a
technique known as binaural reproduction is used. A binaural signal
consists of two channels containing a different signal for each ear
depending on the listener's position relative to the sound source. When
trying to replicate a binaural signal over headphones, perfect channel
separation is guarantedd, meaning that the binaural signals designated
for the left and right ear respectively are only transmitted to the
corresponding ear. When a loudspeaker system is used on the other hand,
crosstalk between the two binaural signals is an issue and has to be
cancelled by the corresponding crosstalk cancellation (CTC) filters. In
adaptive crosstalk cancellation (ACTC) systems, these filters are
adapted in real-time by placing two microphones close to the ear
positions to measure the incoming sound signals and estimate the
corresponding impulse responses.
The goal of this thesis is to acoustically estimate the position and
orientation of a listener's head based on these impulse responses in
order to adapt the binaural signals of the acoustic scene. Based on
geometric relations in free space, an estimation of the position and
orientation of the listener can be done. Several algorithms for 2D and
3D space have been implemented and compared against each other in terms
of accuracy and real-time capability.
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Allgemeine Informationen zum Kolloquium, sowie eine aktuelle Liste der
Termine des Kommunikationstechnischen Kolloquiums finden Sie unter:
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(a)iks.rwth-aachen.de
http://www.iks.rwth-aachen.de/