-- English version below --

Sehr geehrte Abonnenten des Kolloquium-Newsletters,

gerne informieren wir Sie über den nächsten Termin unseres Kommunikationstechnischen Kolloquiums.

Montag, 28. September 2020
Vortragender: Zach Lee
Zeit: 11:00 Uhr
Ort: https://rwth.zoom.us/j/97904157921?pwd=SWpsbDl0MWhrWjY1ZkZaeFRoYmErZz09

        Meeting-ID: 979 0415 7921
        Passwort: 481650

Bachelor-Vortrag: Time-Varying Simulation of Adaptive Crosstalk Cancellation Systems based on Acoustic Measurements

In order to reproduce binaural audio via loudspeakers, a crosstalk cancellation (CTC) system is necessary to attenuate the crosstalk. The task is becoming more challenging when the listener is allowed to move, as the CTC system is often robust in a small and limited area. A recent innovative idea known as the adaptive crosstalk cancellation (ACTC) system is proposed. The CTC filter in this system is updated real-time by placing mircophones close to the entrance of the ear canal to measure the signals perceived by the listener and estimate the corresponding head-related impulse response (HRIR).

The goal of this thesis is to evaluate the ACTC system by performing an acoustic measurement in an anechoic chamber to obtain the real and accurate HRIR of the test listener. With this knowledge, the performance of the ACTC system can be evaluated in a simulation. Furthermore, the limit of the ACTC system can be tested, in terms of how fast it can adapt to changes.

The results show that the ACTC system has a fairly good performance when the listener's ears are on the ipsilateral side of the loudspeakers and the performance falls drastically on the contralateral side. In lower frequencies, the ACTC system works quite well up to a movement (head rotation) speed of 20 deg/s.

Alle Interessierten sind herzlich eingeladen, eine Anmeldung ist nicht erforderlich.

Allgemeine Informationen zum Kolloquium sowie eine aktuelle Liste der Termine des Kommunikationstechnischen Kolloquiums finden Sie unter:
http://www.iks.rwth-aachen.de/aktuelles/kolloquium

Dear subscirbers of the colloquium newsletter,

we are happy to inform you about the next date of our communication technology colloquium.

Monday, September 28, 2020
Speaker: Zach Lee
Time: 11:00 a.m.
Location: https://rwth.zoom.us/j/97904157921?pwd=SWpsbDl0MWhrWjY1ZkZaeFRoYmErZz09

                Meeting-ID: 979 0415 7921
                Passwort: 481650

Bachelor Lecture: Time-Varying Simulation of Adaptive Crosstalk Cancellation Systems based on Acoustic Measurements

In order to reproduce binaural audio via loudspeakers, a crosstalk cancellation (CTC) system is necessary to attenuate the crosstalk. The task is becoming more challenging when the listener is allowed to move, as the CTC system is often robust in a small and limited area. A recent innovative idea known as the adaptive crosstalk cancellation (ACTC) system is proposed. The CTC filter in this system is updated real-time by placing microphones close to the entrance of the ear canal to measure the signals perceibed by the listener and estimate the corresponding head-related impulse response (HRIR).

The goal of this thesis is to evaluate the ACTC system by performing an acoustic measurement in an anechoic chamber to obtain the real and accurate HRIR of the test listener. With this knowledge, the performance of the ACTC system can be evaluated in a simulation. Furthermore, the limit of the ACTC system can be tested, in terms of how fast it can adapt to changes.

The results show that the ACTC system has a fairly good performance when the listener's ears are on the ipsilateral side of the loudspeakers and the performance falls drastically on the contralateral side. In lower frequencies, the ACTC system works quite well up to a movement (head rotation) speed of 20 deg/s.

All interested parties are cordially invited, registration is not required.

General information on the colloquium, as well as a current list of the dates of the communication technology colloquium can be found at:
http://www.iks.rwth-aachen.de/aktulles/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/