[{"author":[{"last_name":"Tran Vu","full_name":"Tran Vu, Dang Hai","first_name":"Dang Hai"},{"full_name":"Krueger, Alexander","first_name":"Alexander","last_name":"Krueger"},{"id":"242","last_name":"Haeb-Umbach","first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold"}],"title":"Generalized Eigenvector Blind Speech Separation Under Coherent Noise In A GSC Configuration","abstract":[{"text":"This Paper deals with a new Technique for multi-channel separation of speech signals from convolutive mixtures under coherent noise. We demonstrate how the scaled transfer functions from the sources to the microphones can be estimated even in the presence of stationary coherent noise. The key to this are generalized eigenvalue decompositions of the power spectral density (PSD) matrices of the noisy speech and noise-only microphone signals with a controlled estimation of these matrices exploiting time-frequency sparseness of the speech sources. Separation is further improved by subsequent Gram-Schmidt orthogonalization which places spatial nulls at the interferers{\\rq} directions, while noise reduction is improved by employing a novel blocking matrix and adaptive interference canceller in a Generalized Sidelobe Canceller (GSC)-like structure. We report promising experimental results for 2 speech sources with significant coherent noise in reverberant environments (RT60=0oms..500ms).","lang":"eng"}],"main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2008/DaKrHa08.pdf"}],"user_id":"44006","oa":"1","citation":{"mla":"Tran Vu, Dang Hai, et al. “Generalized Eigenvector Blind Speech Separation Under Coherent Noise In A GSC Configuration.” <i>International Workshop on Acoustic Echo and Noise Control (IWAENC 2008)</i>, 2008.","bibtex":"@inproceedings{Tran Vu_Krueger_Haeb-Umbach_2008, title={Generalized Eigenvector Blind Speech Separation Under Coherent Noise In A GSC Configuration}, booktitle={International Workshop on Acoustic Echo and Noise Control (IWAENC 2008)}, author={Tran Vu, Dang Hai and Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2008} }","short":"D.H. Tran Vu, A. Krueger, R. Haeb-Umbach, in: International Workshop on Acoustic Echo and Noise Control (IWAENC 2008), 2008.","ama":"Tran Vu DH, Krueger A, Haeb-Umbach R. Generalized Eigenvector Blind Speech Separation Under Coherent Noise In A GSC Configuration. In: <i>International Workshop on Acoustic Echo and Noise Control (IWAENC 2008)</i>. ; 2008.","apa":"Tran Vu, D. H., Krueger, A., &#38; Haeb-Umbach, R. (2008). Generalized Eigenvector Blind Speech Separation Under Coherent Noise In A GSC Configuration. In <i>International Workshop on Acoustic Echo and Noise Control (IWAENC 2008)</i>.","chicago":"Tran Vu, Dang Hai, Alexander Krueger, and Reinhold Haeb-Umbach. “Generalized Eigenvector Blind Speech Separation Under Coherent Noise In A GSC Configuration.” In <i>International Workshop on Acoustic Echo and Noise Control (IWAENC 2008)</i>, 2008.","ieee":"D. H. Tran Vu, A. Krueger, and R. Haeb-Umbach, “Generalized Eigenvector Blind Speech Separation Under Coherent Noise In A GSC Configuration,” in <i>International Workshop on Acoustic Echo and Noise Control (IWAENC 2008)</i>, 2008."},"department":[{"_id":"54"}],"date_created":"2019-07-12T05:30:43Z","publication":"International Workshop on Acoustic Echo and Noise Control (IWAENC 2008)","status":"public","language":[{"iso":"eng"}],"type":"conference","year":"2008","_id":"11915","date_updated":"2022-01-06T06:51:12Z"},{"main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2008/WaKrHa08.pdf"}],"keyword":["adaptive interference canceller","adaptive signal processing","array signal processing","beamforming method","eigenvalues and eigenfunctions","generalized eigenvector blocking matrix","generalized sidelobe canceller","interference suppression","matrix algebra","noise suppression","speech enhancement","transfer function estimation","transfer functions"],"oa":"1","user_id":"44006","citation":{"apa":"Warsitz, E., Krueger, A., &#38; Haeb-Umbach, R. (2008). Speech enhancement with a new generalized eigenvector blocking matrix for application in a generalized sidelobe canceller. In <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i> (pp. 73–76). <a href=\"https://doi.org/10.1109/ICASSP.2008.4517549\">https://doi.org/10.1109/ICASSP.2008.4517549</a>","ama":"Warsitz E, Krueger A, Haeb-Umbach R. Speech enhancement with a new generalized eigenvector blocking matrix for application in a generalized sidelobe canceller. In: <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i>. ; 2008:73-76. doi:<a href=\"https://doi.org/10.1109/ICASSP.2008.4517549\">10.1109/ICASSP.2008.4517549</a>","chicago":"Warsitz, Ernst, Alexander Krueger, and Reinhold Haeb-Umbach. “Speech Enhancement with a New Generalized Eigenvector Blocking Matrix for Application in a Generalized Sidelobe Canceller.” In <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i>, 73–76, 2008. <a href=\"https://doi.org/10.1109/ICASSP.2008.4517549\">https://doi.org/10.1109/ICASSP.2008.4517549</a>.","ieee":"E. Warsitz, A. Krueger, and R. Haeb-Umbach, “Speech enhancement with a new generalized eigenvector blocking matrix for application in a generalized sidelobe canceller,” in <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i>, 2008, pp. 73–76.","mla":"Warsitz, Ernst, et al. “Speech Enhancement with a New Generalized Eigenvector Blocking Matrix for Application in a Generalized Sidelobe Canceller.” <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i>, 2008, pp. 73–76, doi:<a href=\"https://doi.org/10.1109/ICASSP.2008.4517549\">10.1109/ICASSP.2008.4517549</a>.","bibtex":"@inproceedings{Warsitz_Krueger_Haeb-Umbach_2008, title={Speech enhancement with a new generalized eigenvector blocking matrix for application in a generalized sidelobe canceller}, DOI={<a href=\"https://doi.org/10.1109/ICASSP.2008.4517549\">10.1109/ICASSP.2008.4517549</a>}, booktitle={IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)}, author={Warsitz, Ernst and Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2008}, pages={73–76} }","short":"E. Warsitz, A. Krueger, R. Haeb-Umbach, in: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008), 2008, pp. 73–76."},"department":[{"_id":"54"}],"author":[{"full_name":"Warsitz, Ernst","first_name":"Ernst","last_name":"Warsitz"},{"full_name":"Krueger, Alexander","first_name":"Alexander","last_name":"Krueger"},{"full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold","last_name":"Haeb-Umbach","id":"242"}],"title":"Speech enhancement with a new generalized eigenvector blocking matrix for application in a generalized sidelobe canceller","doi":"10.1109/ICASSP.2008.4517549","abstract":[{"lang":"eng","text":"The generalized sidelobe canceller by Griffith and Jim is a robust beamforming method to enhance a desired (speech) signal in the presence of stationary noise. Its performance depends to a high degree on the construction of the blocking matrix which produces noise reference signals for the subsequent adaptive interference canceller. Especially in reverberated environments the beamformer may suffer from signal leakage and reduced noise suppression. In this paper a new blocking matrix is proposed. It is based on a generalized eigenvalue problem whose solution provides an indirect estimation of the transfer functions from the source to the sensors. The quality of the new generalized eigenvector blocking matrix is studied in simulated rooms with different reverberation times and is compared to alternatives proposed in the literature."}],"page":"73-76","_id":"11935","date_updated":"2022-01-06T06:51:12Z","date_created":"2019-07-12T05:31:06Z","publication":"IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)","status":"public","language":[{"iso":"eng"}],"type":"conference","year":"2008"},{"page":"4409-4412","_id":"11939","date_updated":"2022-01-06T06:51:12Z","date_created":"2019-07-12T05:31:11Z","publication":"IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)","language":[{"iso":"eng"}],"type":"conference","year":"2008","status":"public","citation":{"short":"S. Windmann, R. Haeb-Umbach, in: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008), 2008, pp. 4409–4412.","mla":"Windmann, Stefan, and Reinhold Haeb-Umbach. “Modeling the Dynamics of Speech and Noise for Speech Feature Enhancement in ASR.” <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i>, 2008, pp. 4409–12, doi:<a href=\"https://doi.org/10.1109/ICASSP.2008.4518633\">10.1109/ICASSP.2008.4518633</a>.","bibtex":"@inproceedings{Windmann_Haeb-Umbach_2008, title={Modeling the dynamics of speech and noise for speech feature enhancement in ASR}, DOI={<a href=\"https://doi.org/10.1109/ICASSP.2008.4518633\">10.1109/ICASSP.2008.4518633</a>}, booktitle={IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)}, author={Windmann, Stefan and Haeb-Umbach, Reinhold}, year={2008}, pages={4409–4412} }","chicago":"Windmann, Stefan, and Reinhold Haeb-Umbach. “Modeling the Dynamics of Speech and Noise for Speech Feature Enhancement in ASR.” In <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i>, 4409–12, 2008. <a href=\"https://doi.org/10.1109/ICASSP.2008.4518633\">https://doi.org/10.1109/ICASSP.2008.4518633</a>.","ieee":"S. Windmann and R. Haeb-Umbach, “Modeling the dynamics of speech and noise for speech feature enhancement in ASR,” in <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i>, 2008, pp. 4409–4412.","apa":"Windmann, S., &#38; Haeb-Umbach, R. (2008). Modeling the dynamics of speech and noise for speech feature enhancement in ASR. In <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i> (pp. 4409–4412). <a href=\"https://doi.org/10.1109/ICASSP.2008.4518633\">https://doi.org/10.1109/ICASSP.2008.4518633</a>","ama":"Windmann S, Haeb-Umbach R. Modeling the dynamics of speech and noise for speech feature enhancement in ASR. In: <i>IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008)</i>. ; 2008:4409-4412. doi:<a href=\"https://doi.org/10.1109/ICASSP.2008.4518633\">10.1109/ICASSP.2008.4518633</a>"},"main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2008/WiHa08-1.pdf","open_access":"1"}],"keyword":["a posteriori probability","AURORA2 database","Bayesian inference","Bayes methods","channel bank filters","extended Kalman filter banks","hidden noise state variable","Kalman filters","noise dynamics","speech enhancement","speech feature enhancement","speech feature trajectory","switching linear dynamical model approach"],"oa":"1","user_id":"44006","department":[{"_id":"54"}],"title":"Modeling the dynamics of speech and noise for speech feature enhancement in ASR","author":[{"last_name":"Windmann","full_name":"Windmann, Stefan","first_name":"Stefan"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","id":"242"}],"abstract":[{"lang":"eng","text":"In this paper a switching linear dynamical model (SLDM) approach for speech feature enhancement is improved by employing more accurate models for the dynamics of speech and noise. The model of the clean speech feature trajectory is improved by augmenting the state vector to capture information derived from the delta features. Further a hidden noise state variable is introduced to obtain a more elaborated model for the noise dynamics. Approximate Bayesian inference in the SLDM is carried out by a bank of extended Kalman filters, whose outputs are combined according to the a posteriori probability of the individual state models. Experimental results on the AURORA2 database show improved recognition accuracy."}],"doi":"10.1109/ICASSP.2008.4518633"},{"status":"public","language":[{"iso":"eng"}],"type":"journal_article","year":"2008","date_created":"2019-07-12T05:31:12Z","publication":"2008 ITG Conference on Voice Communication (SprachKommunikation)","date_updated":"2022-01-06T06:51:12Z","_id":"11940","page":"1-4","abstract":[{"text":"In this paper, the noise estimation for model-based speech feature enhancement in automatic speech recognition (ASR) is investigated. Beside a stationary noise prior, three linear state space models for the (cepstral) noise process are considered. We have derived novel EM algorithms for the estimation of the noise model parameters: A blockwise EM algorithm is applied on noise-only input data. It is supposed to be used during the offline training mode of the recognizer. Further a sequential online EM algorithm is employed to adapt the observation variance in recognition mode which works as well under the asumption of a stationary noise prior and a linear state model for the noise. Experiments on the AURORA4 database lead to improved recognition results with the new state model compared to the assumption of stationary noise.","lang":"eng"}],"author":[{"last_name":"Windmann","full_name":"Windmann, Stefan","first_name":"Stefan"},{"full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold","id":"242","last_name":"Haeb-Umbach"}],"title":"A novel approach to noise estimation in model-based speech feature enhancement","department":[{"_id":"54"}],"main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2008/WiHa08-2.pdf","open_access":"1"}],"oa":"1","user_id":"44006","citation":{"bibtex":"@article{Windmann_Haeb-Umbach_2008, title={A novel approach to noise estimation in model-based speech feature enhancement}, journal={2008 ITG Conference on Voice Communication (SprachKommunikation)}, author={Windmann, Stefan and Haeb-Umbach, Reinhold}, year={2008}, pages={1–4} }","mla":"Windmann, Stefan, and Reinhold Haeb-Umbach. “A Novel Approach to Noise Estimation in Model-Based Speech Feature Enhancement.” <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>, 2008, pp. 1–4.","short":"S. Windmann, R. Haeb-Umbach, 2008 ITG Conference on Voice Communication (SprachKommunikation) (2008) 1–4.","apa":"Windmann, S., &#38; Haeb-Umbach, R. (2008). A novel approach to noise estimation in model-based speech feature enhancement. <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>, 1–4.","ama":"Windmann S, Haeb-Umbach R. A novel approach to noise estimation in model-based speech feature enhancement. <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>. 2008:1-4.","ieee":"S. Windmann and R. Haeb-Umbach, “A novel approach to noise estimation in model-based speech feature enhancement,” <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>, pp. 1–4, 2008.","chicago":"Windmann, Stefan, and Reinhold Haeb-Umbach. “A Novel Approach to Noise Estimation in Model-Based Speech Feature Enhancement.” <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>, 2008, 1–4."}},{"date_created":"2019-07-12T05:31:16Z","publication":"2008 ITG Conference on Voice Communication (SprachKommunikation)","status":"public","language":[{"iso":"eng"}],"year":"2008","type":"journal_article","_id":"11944","page":"1-4","date_updated":"2022-01-06T06:51:12Z","author":[{"last_name":"Windmann","full_name":"Windmann, Stefan","first_name":"Stefan"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","id":"242"},{"first_name":"Volker","full_name":"Leutnant, Volker","last_name":"Leutnant"}],"title":"A segmental HMM based on a modified emission probability","abstract":[{"text":"In this paper, a novel segmental Hidden Markov Model (HMM) is proposed. The model is based on a modified emission density where additional statistical dependencies between subsequent frames of the speech signal are considered. In the following we derive an effective search strategy for the modified statistical model. Further an approach to parameter reduction is introduced. Experiments were carried out on the AURORA2 database where consistent im","lang":"eng"}],"main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2008/WiHaLe08.pdf","open_access":"1"}],"user_id":"44006","oa":"1","citation":{"mla":"Windmann, Stefan, et al. “A Segmental HMM Based on a Modified Emission Probability.” <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>, 2008, pp. 1–4.","bibtex":"@article{Windmann_Haeb-Umbach_Leutnant_2008, title={A segmental HMM based on a modified emission probability}, journal={2008 ITG Conference on Voice Communication (SprachKommunikation)}, author={Windmann, Stefan and Haeb-Umbach, Reinhold and Leutnant, Volker}, year={2008}, pages={1–4} }","short":"S. Windmann, R. Haeb-Umbach, V. Leutnant, 2008 ITG Conference on Voice Communication (SprachKommunikation) (2008) 1–4.","ama":"Windmann S, Haeb-Umbach R, Leutnant V. A segmental HMM based on a modified emission probability. <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>. 2008:1-4.","apa":"Windmann, S., Haeb-Umbach, R., &#38; Leutnant, V. (2008). A segmental HMM based on a modified emission probability. <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>, 1–4.","chicago":"Windmann, Stefan, Reinhold Haeb-Umbach, and Volker Leutnant. “A Segmental HMM Based on a Modified Emission Probability.” <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>, 2008, 1–4.","ieee":"S. Windmann, R. Haeb-Umbach, and V. Leutnant, “A segmental HMM based on a modified emission probability,” <i>2008 ITG Conference on Voice Communication (SprachKommunikation)</i>, pp. 1–4, 2008."},"department":[{"_id":"54"}]},{"department":[{"_id":"49"}],"citation":{"chicago":"Henning, Bernd. <i>Tomografische Ultraschallmessverfahren Für Die Prozessmesstechnik</i>, 28AD.","ieee":"B. Henning, <i>Tomografische Ultraschallmessverfahren für die Prozessmesstechnik</i>. 28AD.","apa":"Henning, B. (28AD). <i>Tomografische Ultraschallmessverfahren für die Prozessmesstechnik</i>.","ama":"Henning B. <i>Tomografische Ultraschallmessverfahren Für Die Prozessmesstechnik</i>.; 28AD.","short":"B. Henning, Tomografische Ultraschallmessverfahren Für Die Prozessmesstechnik, 28AD.","mla":"Henning, Bernd. <i>Tomografische Ultraschallmessverfahren Für Die Prozessmesstechnik</i>. 28AD.","bibtex":"@book{Henning_28AD, title={Tomografische Ultraschallmessverfahren für die Prozessmesstechnik}, author={Henning, Bernd}, year={28AD} }"},"user_id":"15911","title":"Tomografische Ultraschallmessverfahren für die Prozessmesstechnik","author":[{"last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd"}],"date_updated":"2022-01-06T06:52:20Z","_id":"15323","language":[{"iso":"eng"}],"year":"2008","type":"misc","status":"public","date_created":"2019-12-13T10:35:57Z"},{"type":"journal_article","year":"2008","language":[{"iso":"eng"}],"status":"public","publication":"Technisches Messen","date_created":"2019-12-13T10:38:13Z","date_updated":"2022-01-06T06:52:20Z","issue":"4","page":"217-220","_id":"15324","title":"Editorial: XXI. Messtechnisches Symposium des Arbeitskreises der Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007","author":[{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"}],"department":[{"_id":"49"}],"citation":{"short":"B. Henning, Technisches Messen (2008) 217–220.","mla":"Henning, Bernd. “Editorial: XXI. Messtechnisches Symposium Des Arbeitskreises Der Hochschullehrer Für Messtechnik (AHMT), Paderborn, 20.--22.09.2007.” <i>Technisches Messen</i>, no. 4, 2008, pp. 217–20.","bibtex":"@article{Henning_2008, title={Editorial: XXI. Messtechnisches Symposium des Arbeitskreises der Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007}, number={4}, journal={Technisches Messen}, author={Henning, Bernd}, year={2008}, pages={217–220} }","chicago":"Henning, Bernd. “Editorial: XXI. Messtechnisches Symposium Des Arbeitskreises Der Hochschullehrer Für Messtechnik (AHMT), Paderborn, 20.--22.09.2007.” <i>Technisches Messen</i>, no. 4 (2008): 217–20.","ieee":"B. Henning, “Editorial: XXI. Messtechnisches Symposium des Arbeitskreises der Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007,” <i>Technisches Messen</i>, no. 4, pp. 217–220, 2008.","ama":"Henning B. Editorial: XXI. Messtechnisches Symposium des Arbeitskreises der Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007. <i>Technisches Messen</i>. 2008;(4):217-220.","apa":"Henning, B. (2008). Editorial: XXI. Messtechnisches Symposium des Arbeitskreises der Hochschullehrer für Messtechnik (AHMT), Paderborn, 20.--22.09.2007. <i>Technisches Messen</i>, (4), 217–220."},"user_id":"15911"},{"date_updated":"2022-01-06T06:52:20Z","_id":"15325","publication_date":"2008","year":"2008","type":"patent","status":"public","date_created":"2019-12-13T10:39:32Z","department":[{"_id":"49"}],"ipn":"DE105007020491","citation":{"short":"B. Henning, (2008).","bibtex":"@article{Henning_2008, title={Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums sowie Ultraschallzähler}, author={Henning, Bernd}, year={2008} }","mla":"Henning, Bernd. <i>Verfahren Zur Bestimmung Einer Eigenschaft Eines Strömenden Mediums Sowie Ultraschallzähler</i>. 2008.","ieee":"B. Henning, “Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums sowie Ultraschallzähler.” 2008.","chicago":"Henning, Bernd. “Verfahren Zur Bestimmung Einer Eigenschaft Eines Strömenden Mediums Sowie Ultraschallzähler,” 2008.","apa":"Henning, B. (2008). Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums sowie Ultraschallzähler.","ama":"Henning B. Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums sowie Ultraschallzähler. 2008."},"user_id":"15911","ipc":"B25J 7/00","title":"Verfahren zur Bestimmung einer Eigenschaft eines strömenden Mediums sowie Ultraschallzähler","author":[{"first_name":"Bernd","full_name":"Henning, Bernd","last_name":"Henning"}]},{"_id":"15326","date_updated":"2022-01-06T06:52:20Z","date_created":"2019-12-13T10:42:56Z","publication_identifier":{"isbn":["978-3-18-092011-5"]},"type":"conference","year":"2008","language":[{"iso":"eng"}],"status":"public","citation":{"bibtex":"@inproceedings{Rautenberg_Henning_2008, title={Separation und Bewertung verschiedener Moden der Schallausbreitung im akustischen Wellenleiter}, author={Rautenberg, Jens and Henning, Bernd}, year={2008} }","mla":"Rautenberg, Jens, and Bernd Henning. <i>Separation Und Bewertung Verschiedener Moden Der Schallausbreitung Im Akustischen Wellenleiter</i>. 2008.","short":"J. Rautenberg, B. Henning, in: 2008.","apa":"Rautenberg, J., &#38; Henning, B. (2008). Separation und Bewertung verschiedener Moden der Schallausbreitung im akustischen Wellenleiter.","ama":"Rautenberg J, Henning B. Separation und Bewertung verschiedener Moden der Schallausbreitung im akustischen Wellenleiter. In: ; 2008.","ieee":"J. Rautenberg and B. Henning, “Separation und Bewertung verschiedener Moden der Schallausbreitung im akustischen Wellenleiter,” 2008.","chicago":"Rautenberg, Jens, and Bernd Henning. “Separation Und Bewertung Verschiedener Moden Der Schallausbreitung Im Akustischen Wellenleiter,” 2008."},"user_id":"15911","department":[{"_id":"49"}],"title":"Separation und Bewertung verschiedener Moden der Schallausbreitung im akustischen Wellenleiter","author":[{"last_name":"Rautenberg","first_name":"Jens","full_name":"Rautenberg, Jens"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"}],"abstract":[{"text":"In this contribution it is shown that the modal components of the received signal at the end of an acoustic waveguide can be suppressed or intensified if the two electrodes of a piezo-electric ceramic are shaped in a special way. With this it is possible to measure different signals which can be used to differ between the liquids dissipation and the signal attenuation caused by the waveguide geometry as well as impedance conditions. With the help of the principal component analysis it should be possible to infer the modal amplitudes from the received signals of one ultrasonic transducer and to calculate the acoustic impedance of the liquid that is included in the wave guide.","lang":"eng"}]},{"date_updated":"2022-01-06T06:52:20Z","page":"148-151","_id":"15327","status":"public","year":"2008","type":"conference","language":[{"iso":"eng"}],"date_created":"2019-12-13T10:43:55Z","department":[{"_id":"49"}],"user_id":"15911","citation":{"bibtex":"@inproceedings{Rautenberg_Henning_2008, title={Simultaneous direct and indirect measurement of sound velocities}, author={Rautenberg, Jens and Henning, Bernd}, year={2008}, pages={148–151} }","mla":"Rautenberg, Jens, and Bernd Henning. <i>Simultaneous Direct and Indirect Measurement of Sound Velocities</i>. 2008, pp. 148–51.","short":"J. Rautenberg, B. Henning, in: 2008, pp. 148–151.","ama":"Rautenberg J, Henning B. Simultaneous direct and indirect measurement of sound velocities. In: ; 2008:148-151.","apa":"Rautenberg, J., &#38; Henning, B. (2008). Simultaneous direct and indirect measurement of sound velocities (pp. 148–151). Presented at the Eurosensors XXII, Dresden.","ieee":"J. Rautenberg and B. Henning, “Simultaneous direct and indirect measurement of sound velocities,” presented at the Eurosensors XXII, Dresden, 2008, pp. 148–151.","chicago":"Rautenberg, Jens, and Bernd Henning. “Simultaneous Direct and Indirect Measurement of Sound Velocities,” 148–51, 2008."},"abstract":[{"text":"This contribution is about different types of sonagram processing and their application for the simultaneous direct and indirect measurement of both the longitudinal and the transversal ultrasound velocities of highly absorbing isotropic synthetic polymers. Therefore, the pulse transmission of an initially longitudinal wave through a hollow cylindrical specimen is investigated experimentally and theoretically.","lang":"eng"}],"author":[{"first_name":"Jens","full_name":"Rautenberg, Jens","last_name":"Rautenberg"},{"first_name":"Bernd","full_name":"Henning, Bernd","last_name":"Henning","id":"213"}],"conference":{"name":"Eurosensors XXII","start_date":"07.09.2008","location":"Dresden","end_date":"10.09.2008"},"title":"Simultaneous direct and indirect measurement of sound velocities"},{"user_id":"15911","citation":{"short":"J. Rautenberg, H. Ziegler, U. Gaugler, G. Dietz, C. Unverzagt, R. Kehl, B. 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Matrixkonverter, Kapitel 3.8. In: Schröder D, ed. <i>Lehrbuch Leistungselektronische Schaltungen,</i>. 2nd ed. Springer-Verlag; 2008:188-289.","apa":"Kolar, J., &#38; Schafmeister, F. (2008). Matrixkonverter, Kapitel 3.8. In D. Schröder (Ed.), <i>Lehrbuch Leistungselektronische Schaltungen,</i> (2nd ed., pp. 188–289). Springer-Verlag.","chicago":"Kolar, Johann, and Frank Schafmeister. “Matrixkonverter, Kapitel 3.8.” In <i>Lehrbuch Leistungselektronische Schaltungen,</i> edited by Dierk Schröder, 2nd ed., 188–289. Berlin Heidelberg: Springer-Verlag, 2008.","ieee":"J. Kolar and F. Schafmeister, “Matrixkonverter, Kapitel 3.8,” in <i>Lehrbuch Leistungselektronische Schaltungen,</i> 2nd ed., D. Schröder, Ed. Berlin Heidelberg: Springer-Verlag, 2008, pp. 188–289.","mla":"Kolar, Johann, and Frank Schafmeister. “Matrixkonverter, Kapitel 3.8.” <i>Lehrbuch Leistungselektronische Schaltungen,</i> edited by Dierk Schröder, 2nd ed., Springer-Verlag, 2008, pp. 188–289.","bibtex":"@inbook{Kolar_Schafmeister_2008, place={Berlin Heidelberg}, edition={2nd}, title={Matrixkonverter, Kapitel 3.8}, booktitle={Lehrbuch Leistungselektronische Schaltungen,}, publisher={Springer-Verlag}, author={Kolar, Johann and Schafmeister, Frank}, editor={Schröder, Dierk}, year={2008}, pages={188–289} }","short":"J. Kolar, F. Schafmeister, in: D. Schröder (Ed.), Lehrbuch Leistungselektronische Schaltungen, 2nd ed., Springer-Verlag, Berlin Heidelberg, 2008, pp. 188–289."},"place":"Berlin Heidelberg","author":[{"full_name":"Kolar, Johann","first_name":"Johann","last_name":"Kolar"},{"id":"71291","last_name":"Schafmeister","first_name":"Frank","full_name":"Schafmeister, Frank"}],"editor":[{"first_name":"Dierk","full_name":"Schröder, Dierk","last_name":"Schröder"}]}]