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TU Berlin

Inhalt des Dokuments

Dr.-Ing. Friedemann Köster

Lupe

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

Teaching

Speech Communication

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

Möller, Sebastian and Köster, Friedemann and Fernández Gallardo, L. and Wagner, Michael (2014). Operational Quality Estimator: Comparison of Transmission Quality Dimensions of Narrowband, Wideband, and Super-Wideband Channels.


Köster, Friedemann and Guse, Dennis and Wältermann, Marcel and Möller, Sebastian (2015). Comparison between the discrete ACR scale and an extended continuous scale for the quality assessment of transmitted speech. Fortschritte der Akustik – DAGA 2015: Plenarvortr. u. Fachbeitr. d. 41. Dtsch. Jahrestg. f. Akust.. DEGA, 150–153.


Köster, Friedemann and Möller, Sebastian (2015). Diagnosing the quality of transmitted speech with expert and naive listeners. Fortschritte der Akustik – DAGA 2015: Plenarvortr. u. Fachbeitr. d. 41. Dtsch. Jahrestg. f. Akust.. DEGA, 143–146.


Köster, Friedemann and Möller, Sebastian (2015). Perceptual Speech Quality Dimensions in a Conversational Situation. Proc. 16th Ann. Conf. of the Int. Speech Comm. Assoc. (Interspeech 2015). ISCA Interspeech 2015 Prceedings, 2544–2548.


Köster, Friedemann and Möller, Sebastian and Guse, Dennis (2015). Towards Perceptual Speech Quality Dimensions in a Conversational Situation. ITU-T SG 12 Meeting May 2015. ITU.


Köster, Friedemann and Schiffner, Falk and Guse, Dennis and Ahrens, Jens and Skowronek, Janto and Möller, Sebastian (2015). Towards a MATLAB Toolbox for Imposing Speech Signal Impairments Following the P.TCA Schema. Audio Engineering Society Convention 139. AES, 1-8.


Köster, Friedemann and Schiffner, Falk and Möller, Sebastian (2015). Next steps to improve P.TCA. ITU-T SG 12 Meeting May 2015. ITU.


Naderi, Babak and Polzehl, Tim and Wechsung, Ina and Köster, Friedemann and Möller, Sebastian (2015). Effect of Trapping Questions on the Reliability of Speech Quality Judgments in a Crowdsourcing Paradigm. 16th Ann. Conf. of the Int. Speech Comm. Assoc. (Interspeech 2015). ISCA, 2799–2803.


Polzehl, Tim and Naderi, Babak and Köster, Friedemann and Möller, Sebastian (2015). Robustness in Speech Quality Assessment and Temporal Training Expiry in Mobile Crowdsourcing Environments. 16th Ann. Conf. of the Int. Speech Comm. Assoc. (Interspeech 2015). ISCA, 2794–2798.


Köster, Friedemann and Cercos-Llombart, Victor and Mittag, Gabriel and Möller, Sebastian (2016). Non-Intrusive Estimation Model for the Speech-Quality Dimension Loudness. 12. ITG-Fachtagung Sprachkommunikation (Speech Communication). VDE, 175-179.


Köster, Friedemann and Guse, Dennis and Miethaner, C. and Möller, Sebastian (2016). Towards Training Naive Participants for a Perceptual Annotation Task Designed for Experts. 8th Int. Conference on Quality of Multimedia Experience 2016 (QoMEX 2016). IEEE.


Köster, Friedemann and Mittag, Gabriel and Polzehl, Tim and Möller, Sebastian (2016). Non-intrusive Estimation of Noisiness as a Perceptual Quality Dimension of Transmitted Speech. 5th ISCA/DEGA Workshop on Perceptual Quality of Systems (PQS 2016). ISCA/DEGA, 74-78.


Köster, Friedemann and Möller, Sebastian (2016). Introducing a new Test-Method for Diagnostic Speech Quality Assessment in a Conversational Situation. Fortschritte der Akustik, DAGA 2016: Plenarvortr. u. Fachbeitr. d. 42. Dtsch. Jahrestg. f. Akust.. DEGA, 1409-1412.


Köster, Friedemann and Möller, Sebastian (2016). Potential need for diagnostic single-ended quality indicators. ITU-T SG 12 Meeting January 2016. ITU.


Köster, Friedemann and Möller, Sebastian (2016). Proposal for a new work item on diagnostic single-ended quality indicators. ITU-T SG 12 Meeting June 2016. ITU.


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