TY - GEN A1 - Kraljevski, Ivan A1 - Duckhorn, Frank A1 - Barth, Martin A1 - Tschöpe, Constanze A1 - Schubert, Frank A1 - Wolff, Matthias T1 - Autoencoder-based Ultrasonic NDT of Adhesive Bonds T2 - IEEE SENSORS 2021, Conference Proceedings, Oct 31- Nov 4, Sydney, Australia N2 - We present an approach for ultrasonic non-destructive testing of adhesive bonding employing unsupervised machine learning with autoencoders.The models are trained exclusively on the features derived from pulse-echo ultrasonic signals on a specimen with good adhesive bonding and tested on another specimen with artificially added defects.The resulting pseudo-probabilities indicating anomalies are visualized and presented along to the C-scan of the same specimen. As a result, we achieved improved representation of the defects, allowing their automatic and reliable detection. Y1 - 2021 SN - 978-1-7281-9501-8 U6 - https://doi.org/10.1109/SENSORS47087.2021.9639864 PB - IEEE ER - TY - GEN A1 - Kraljevski, Ivan A1 - Duckhorn, Frank A1 - Tschöpe, Constanze A1 - Schubert, Frank A1 - Wolff, Matthias T1 - Paper Tissue Softness Rating by Acoustic Emission Analysis T2 - Applied Sciences N2 - Softness is one of the essential properties of hygiene tissue products. Reliably measuring it is of utmost importance to ensure the balance between customer expectations and cost-effective tissue production. This study presents a method for assessing softness by analyzing acoustic emissions produced while tearing a tissue specimen. The aim was to train neural network models using the corrected results of human panel tests as the ground truth labels and to predict the tissue softness in two- and three-class recognition tasks. We also investigate the possibility of predicting some production parameters related to the softness property. The results proved that tissue softness and production parameters could be reliably estimated only by the tearing noise. KW - acoustic emission KW - machine learning KW - tissue softness analysis Y1 - 2022 U6 - https://doi.org/10.3390/app13031670 SN - 2076-3417 VL - 13 IS - 3 ER - TY - CHAP A1 - Duckhorn, Frank A1 - Wolff, Matthias A1 - Hoffmann, Rüdiger T1 - Realisierung von Mischverteilungsdichten durch gewichtete endliche Automaten (Finite-State Transducers) Y1 - 2010 ER - TY - CHAP A1 - Strecha, Guntram A1 - Wolff, Matthias A1 - Duckhorn, Frank A1 - Wittenberg, Sören A1 - Tschöpe, Constanze T1 - The HMM synthesis algorithm of an embedded unified speech recognizer and synthesizer T2 - Proceedings of the Annual Conference of the International Speech Communication Association 2009, Interspeech 2009, 6 - 10 September, 2009, Brighton, UK Y1 - 2009 SP - 1763 EP - 1766 PB - ISCA CY - Brighton ER - TY - CHAP A1 - Duckhorn, Frank A1 - Strecha, Guntram A1 - Wolff, Matthias A1 - Hoffmann, Rüdiger ED - Hoffmann, Rüdiger T1 - Ein Sprachdialogsystem mit begrenzten Hardwareressourcen T2 - Elektronische Sprachsignalverarbeitung 2009, Tagungsband der 20. Konferenz, Dresden, 21. bis 23. September 2009, Band 1 Y1 - 2009 SN - 978-3-941298-31-6 SP - 88 EP - 93 PB - TUDpress CY - Dresden ER - TY - CHAP A1 - Tschöpe, Constanze A1 - Joneit, Dieter A1 - Duckhorn, Frank A1 - Hoffmann, Rüdiger A1 - Strecha, Guntram A1 - Wolff, Matthias T1 - Sprachsteuerung für Mess- und Prüfgeräte T2 - DGZfP-Jahrestagung 2011 Zerstörungsfreie Materialprüfung, 30. Mai - 1. Juni 2011, Bremen, Berichtsband Y1 - 2011 SN - 978-3-940283-33-7 PB - DGZfP CY - Berlin ER - TY - CHAP A1 - Kraljevski, Ivan A1 - Duckhorn, Frank A1 - Wolff, Matthias A1 - Hoffmann, Rüdiger ED - Wolff, Matthias T1 - Multi-condition training and adaptation for noise robust speech recognition T2 - Elektronische Sprachsignalverarbeitung 2012, Tagungsband der 23. Konferenz, Cottbus, 29. - 31. August 2012 Y1 - 2012 SN - 978-3-942710-81-7 SP - 73 EP - 80 ER - TY - CHAP A1 - Tschöpe, Constanze A1 - Wolff, Matthias A1 - Strecha, Guntram A1 - Duckhorn, Frank A1 - Feher, Thomas A1 - Hoffmann, Rüdiger T1 - Automatisierte Weichheitsprüfung von Papier T2 - ZfP in Forschung, Entwicklung und Anwendung, Graz, 17. - 19. September 2012, DACH-Jahrestagung 2012 Zerstörungsfreie Materialprüfung Y1 - 2012 SN - 978-394-02834-4-3 PB - DGZfP CY - Berlin ER - TY - RPRT A1 - Duckhorn, Frank A1 - Wolff, Matthias A1 - Tschöpe, Constanze T1 - Hidden Markov Model training using Finite State Machines Y1 - 2010 UR - http://www.tu-cottbus.de/fakultaet3/de/kommunikationstechnik/publikationen/reports.html UR - https://www-docs.b-tu.de/fg-kommunikationstechnik/btuauth/_Publikationen/2010_hmmtrn.pdf PB - Technische Universität, Institut für Akustik und Sprachkommunikation CY - Dresden ER - TY - CHAP A1 - Duckhorn, Frank A1 - Wolff, Matthias A1 - Strecha, Guntram A1 - Hoffmann, Rüdiger T1 - An application example for unified speech synthesis and recognition using Hidden Markov Models T2 - One day meeting on unified models for speech recognition and synthesis, Birmingham, U.K. March 2009 Y1 - 2009 U6 - https://doi.org/10.13140/RG.2.1.1626.8969 ER -