Inhalt des Dokuments
Dr.-Ing. Friedemann Köster
Research Field
- Quality of Speech and Audio
- Speech- and Signal Processing
Research Topics
- Multidimensional Diagnostic Analysis of Conversational Speech Quality
Biography
Friedemann Köster studied Industrial Engineering at the Christian-Albrechts-University of Kiel. In 2012 he finished his studies and received his Dipl.-Wirtsch.-Ing. degree. Currently he is working as a research assistant at the Quality and Usability Lab of Deutsche Telekom Laboratories, TU-Berlin, where he also works towards a Phd degree in the field of quality.
Projects
- Subjektive Messung und instrumentelle Schätzung von Sprachqualität in einer Konversationssituation auf Basis von perzeptiven Dimensionen
- User-Friendly Estimation of Speech Quality for Telecommunications and
Network Carriers (UFESQ)
Teaching
Address:
Quality and Usability Lab
Deutsche Telekom Laboratories
TU Berlin
Ernst-Reuter-Platz 7
D-10587 Berlin, Germany
Telefon:
+49 30 8353 58255
+49 151 14745202
Publications
Zitatschlüssel | koester2015a |
---|---|
Autor | Köster, Friedemann and Guse, Dennis and Wältermann, Marcel and Möller, Sebastian |
Buchtitel | Fortschritte der Akustik – DAGA 2015: Plenarvortr. u. Fachbeitr. d. 41. Dtsch. Jahrestg. f. Akust. |
Seiten | 150–153 |
Jahr | 2015 |
ISBN | 978-3-939296-08-9 |
Ort | Nürnberg, DE |
Adresse | Berlin |
Monat | mar |
Notiz | another medium |
Verlag | DEGA |
Wie herausgegeben | full |
Zusammenfassung | In this contribution the properties of quality ratings as obtained on a continuous and extended scale are investigated and a functional relation to the ITU-T P.800 Absolute Category Rating (ACR) scale is derived. Therefore, two auditory experiments were conducted in which narrowband and wideband conditions were rated on both the extended continuous and the ACR scale. It turned out that the main benefit of the extended continuous scale is the increased sensitivity, especially for conditions of lower quality. This fact renders the continuous scale attractive for wideband or beyond-wideband experiments, where only a reduced area of the rating scale is available for low-quality conditions (e.g., narrowband conditions). |