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Goudarzi, Armin (2020) Coherence based reflection coefficient estimation. In: DAGA2020 Tagungsband (225), 68 - 71. DAGA 2020 – 46. Deutsche Jahrestagung für Akustik, 2020-03-16 - 2020-03-19, Hannover, Germany.
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Official URL: https://daga2020.de
Abstract
A new method to measure the reflection coefficient of surfaces is presented. It only relies on a single noise source and a single microphone. The method is robust to inaccuracies in the experimental setup and does not require high end measurement equipment. It is derived from the blind source separation problem where the direct and reflected sound are reconstructed from their mixed signal. To do so, an analytical solution to the mixing matrix is presented. It is based on a short window Welch coherence estimation of the measured signal and a by the reflection time shifted version of the signal. The method is validated with simulated and real experimental data.
| Item URL in elib: | https://elib.dlr.de/135731/ | ||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||
| Additional Information: | Akustische Messtechnik und Sensorik 2, Veranstalter: • Deutsche Gesellschaft für Akustik e.V. (DEGA) • Leibniz Universität Hannover – Institut für Kommunikationstechnik (LUH/IKT) • Niedersächsische Arbeitsgemeinschaft Akustik (NAGA) unter Mitwirkung von • Deutsche Physikalische Gesellschaft (DPG) • DIN/VDI-Normenausschuss NALS • Informationstechnische Gesellschaft (ITG) im VDE | ||||||||
| Title: | Coherence based reflection coefficient estimation | ||||||||
| Authors: |
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| Date: | 2020 | ||||||||
| Journal or Publication Title: | DAGA2020 Tagungsband | ||||||||
| Refereed publication: | Yes | ||||||||
| Open Access: | Yes | ||||||||
| Gold Open Access: | No | ||||||||
| In SCOPUS: | No | ||||||||
| In ISI Web of Science: | No | ||||||||
| Page Range: | 68 - 71 | ||||||||
| Series Name: | Conference Proceedings | ||||||||
| Status: | Published | ||||||||
| Keywords: | reflection coefficient estimation, single microphone, measurement equipment, blind source separation | ||||||||
| Event Title: | DAGA 2020 – 46. Deutsche Jahrestagung für Akustik | ||||||||
| Event Location: | Hannover, Germany | ||||||||
| Event Type: | international Conference | ||||||||
| Event Start Date: | 16 March 2020 | ||||||||
| Event End Date: | 19 March 2020 | ||||||||
| Organizer: | German Acoustical Society (DEGA e.V.), siehe Anhang | ||||||||
| Institution: | Deutsches Zentrum für Luft- und Raumfahrt e.V. | ||||||||
| Department: | AS-EXV | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Aeronautics | ||||||||
| HGF - Program Themes: | fixed-wing aircraft | ||||||||
| DLR - Research area: | Aeronautics | ||||||||
| DLR - Program: | L AR - Aircraft Research | ||||||||
| DLR - Research theme (Project): | L - Simulation and Validation (old) | ||||||||
| Location: | Göttingen | ||||||||
| Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Experimental Methods, GO | ||||||||
| Deposited By: | Micknaus, Ilka | ||||||||
| Deposited On: | 18 Sep 2020 12:40 | ||||||||
| Last Modified: | 24 Apr 2024 20:38 |
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