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Alexander Manecke
Research Field:
Usability
Research Topics:
- Connected Home
- Home automation
- Smart Meetering
Telefon:
+49 30 8353 58536 E-Mail: alexander.manecke@telekom.de
Publications
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. |