Alexander Manecke

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Research Field:

Usability

Research Topics:

• Connected Home
• Home automation
• Smart Meetering

Biography:Alexander Manecke joined Deutsche Telekom Laboratories in 2006 and currently he is working as a research assistant (Wissenschaftlicher Mitarbeiter) at the Quality and Usability Lab of Deutsche Telekom Laboratories, TU-Berlin. He studied computer science at Freie Universität Berlin and has received a diploma in computer science.Address:Quality and Usability LabDeutsche Telekom LaboratoriesTU BerlinWinterfeldstr. 21D-10787 Berlin, Germany
Telefon:
+49 30 8353 58536   E-Mail: alexander.manecke@telekom.de

Publications

Neural correlates of Affective States and Speech Perception: Towards Quality-of- Experience Measurement of Reverberant Speech

Zitatschlüssel	antons2013e
Autor	Antons, Jan-Niklas and Laghari, K. and Schleicher, Robert and Arndt, Sebastian and Falk, Tiago H. and Möller, Sebastian
Buchtitel	Proceedings of the International Conference on Acoustics (AIA-DAGA 2013)
Seiten	1–4
Jahr	2013
ISBN	9783939296058
Ort	Merano, Italy
Adresse	Berlin, Germany
Notiz	Electronic/online
Verlag	German Acoustical Society (DEGA)
Serie	AIA-DAGA
Wie herausgegeben	Full
Zusammenfassung	Speech quality assessment usually depends on subjective judgments after listening to test stimuli. The obtained subjective quality indices are valid and reliable but provide little insight into the underlying perceptual process. Since reverberation is known to influence perceived speech quality and intelligibility, e.g. in conference calls while using a loudspeaker, we analyzed the performance of electroencephalography (EEG), which measures brain activity at the cortical level, for indicating speech stimuli with a high reverberation time as degradation. We collected a database of 22 subjects to test the ability of utilizing EEGdata - especially parameters of event-related-potentials (ERP) - to identify the processing of a stimulus with high reverberation times. The reported preliminary findings provide promising insights: indirect measurements of perceived stimulus quality - without asking for the subjects' opinion - are sensitive to reverberation levels. Correlations between physiological parameters and stimulus features showed that quality degradations can be monitored in conscious stages of stimulus processing. We show that the analysis of ERP is in general a useful and valid tool in quality research. In the case of reverberation, this can actually lead to the indirect measurement of perceived quality with respect to changes of room acoustics.

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