[{"publication":"International Symposium on Human Factors in Telecommunications, Melbourne","type":"conference","status":"public","_id":"11768","department":[{"_id":"54"}],"user_id":"44006","language":[{"iso":"eng"}],"year":"1995","citation":{"ieee":"S. Gamm, R. Haeb-Umbach, and D. Langmann, “The Usability Engineering of a Voice-Controlled Answering Machine,” in <i>International Symposium on Human Factors in Telecommunications, Melbourne</i>, 1995.","chicago":"Gamm, Stephan, Reinhold Haeb-Umbach, and Det Langmann. “The Usability Engineering of a Voice-Controlled Answering Machine.” In <i>International Symposium on Human Factors in Telecommunications, Melbourne</i>, 1995.","ama":"Gamm S, Haeb-Umbach R, Langmann D. The Usability Engineering of a Voice-Controlled Answering Machine. In: <i>International Symposium on Human Factors in Telecommunications, Melbourne</i>. ; 1995.","short":"S. Gamm, R. Haeb-Umbach, D. Langmann, in: International Symposium on Human Factors in Telecommunications, Melbourne, 1995.","mla":"Gamm, Stephan, et al. “The Usability Engineering of a Voice-Controlled Answering Machine.” <i>International Symposium on Human Factors in Telecommunications, Melbourne</i>, 1995.","bibtex":"@inproceedings{Gamm_Haeb-Umbach_Langmann_1995, title={The Usability Engineering of a Voice-Controlled Answering Machine}, booktitle={International Symposium on Human Factors in Telecommunications, Melbourne}, author={Gamm, Stephan and Haeb-Umbach, Reinhold and Langmann, Det}, year={1995} }","apa":"Gamm, S., Haeb-Umbach, R., &#38; Langmann, D. (1995). The Usability Engineering of a Voice-Controlled Answering Machine. In <i>International Symposium on Human Factors in Telecommunications, Melbourne</i>."},"date_updated":"2022-01-06T06:51:08Z","author":[{"full_name":"Gamm, Stephan","last_name":"Gamm","first_name":"Stephan"},{"last_name":"Haeb-Umbach","id":"242","full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold"},{"first_name":"Det","full_name":"Langmann, Det","last_name":"Langmann"}],"date_created":"2019-07-12T05:27:53Z","title":"The Usability Engineering of a Voice-Controlled Answering Machine"},{"abstract":[{"lang":"eng","text":"Recognition accuracy has been the primary objective of most speech recognition research, and impressive results have been obtained, e.g. less than 0.3% word error rate on a speaker-independent digit recognition task. When it comes to real-world applications, robustness and real-time response might be more important issues. For the first requirement we review some of the work on robustness and discuss one specific technique, spectral normalization, in more detail. The requirement of real-time response has to be considered in the light of the limited hardware resources in voice control applications, which are due to the tight cost constraints. In this paper we discuss in detail one specific means to reduce the processing and memory demands: a clustering technique applied at various levels within the acoustic modelling."}],"status":"public","publication":"Philips Journal of Research","type":"journal_article","language":[{"iso":"eng"}],"_id":"11786","department":[{"_id":"54"}],"user_id":"44006","year":"1995","citation":{"ama":"Haeb-Umbach R, Beyerlein P, Geller D. Speech recognition algorithms for voice control interfaces. <i>Philips Journal of Research</i>. 1995.","ieee":"R. Haeb-Umbach, P. Beyerlein, and D. Geller, “Speech recognition algorithms for voice control interfaces,” <i>Philips Journal of Research</i>, 1995.","chicago":"Haeb-Umbach, Reinhold, Peter Beyerlein, and Dieter Geller. “Speech Recognition Algorithms for Voice Control Interfaces.” <i>Philips Journal of Research</i>, 1995.","bibtex":"@article{Haeb-Umbach_Beyerlein_Geller_1995, title={Speech recognition algorithms for voice control interfaces}, journal={Philips Journal of Research}, author={Haeb-Umbach, Reinhold and Beyerlein, Peter and Geller, Dieter}, year={1995} }","mla":"Haeb-Umbach, Reinhold, et al. “Speech Recognition Algorithms for Voice Control Interfaces.” <i>Philips Journal of Research</i>, 1995.","short":"R. Haeb-Umbach, P. Beyerlein, D. Geller, Philips Journal of Research (1995).","apa":"Haeb-Umbach, R., Beyerlein, P., &#38; Geller, D. (1995). Speech recognition algorithms for voice control interfaces. <i>Philips Journal of Research</i>."},"title":"Speech recognition algorithms for voice control interfaces","date_updated":"2022-01-06T06:51:08Z","author":[{"last_name":"Haeb-Umbach","full_name":"Haeb-Umbach, Reinhold","id":"242","first_name":"Reinhold"},{"full_name":"Beyerlein, Peter","last_name":"Beyerlein","first_name":"Peter"},{"first_name":"Dieter","full_name":"Geller, Dieter","last_name":"Geller"}],"date_created":"2019-07-12T05:28:14Z"},{"abstract":[{"lang":"eng","text":"We address the problem of automatically finding an acoustic representation (i.e. a transcription) of unknown words as a sequence of subword units, given a few sample utterances of the unknown words, and an inventory of speaker-independent subword units. The problem arises if a user wants to add his own vocabulary to a speaker-independent recognition system simply by speaking the words a few times. Two methods are investigated which are both based on a maximum-likelihood formulation of the problem. The experimental results show that both automatic transcription methods provide a good estimate of the acoustic models of unknown words. The recognition error rates obtained with such models in a speaker-independent recognition task are clearly better than those resulting from separate whole-word models. They are comparable with the performance of transcriptions drawn from a dictionary."}],"status":"public","publication":"ICASSP, Detroit","type":"conference","language":[{"iso":"eng"}],"_id":"11787","department":[{"_id":"54"}],"user_id":"44006","year":"1995","citation":{"apa":"Haeb-Umbach, R., Beyerlein, P., &#38; Thelen, E. (1995). Automatic Transcription of Unknown Words in a Speech Recognition System. In <i>ICASSP, Detroit</i>.","bibtex":"@inproceedings{Haeb-Umbach_Beyerlein_Thelen_1995, title={Automatic Transcription of Unknown Words in a Speech Recognition System}, booktitle={ICASSP, Detroit}, author={Haeb-Umbach, Reinhold and Beyerlein, P. and Thelen, E.}, year={1995} }","short":"R. Haeb-Umbach, P. Beyerlein, E. Thelen, in: ICASSP, Detroit, 1995.","mla":"Haeb-Umbach, Reinhold, et al. “Automatic Transcription of Unknown Words in a Speech Recognition System.” <i>ICASSP, Detroit</i>, 1995.","chicago":"Haeb-Umbach, Reinhold, P. Beyerlein, and E. Thelen. “Automatic Transcription of Unknown Words in a Speech Recognition System.” In <i>ICASSP, Detroit</i>, 1995.","ieee":"R. Haeb-Umbach, P. Beyerlein, and E. Thelen, “Automatic Transcription of Unknown Words in a Speech Recognition System,” in <i>ICASSP, Detroit</i>, 1995.","ama":"Haeb-Umbach R, Beyerlein P, Thelen E. Automatic Transcription of Unknown Words in a Speech Recognition System. In: <i>ICASSP, Detroit</i>. ; 1995."},"title":"Automatic Transcription of Unknown Words in a Speech Recognition System","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/1995/ICASSP_1995_Haeb1_paper.pdf","open_access":"1"}],"date_updated":"2022-01-06T06:51:08Z","oa":"1","date_created":"2019-07-12T05:28:15Z","author":[{"full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach","first_name":"Reinhold"},{"first_name":"P.","last_name":"Beyerlein","full_name":"Beyerlein, P."},{"last_name":"Thelen","full_name":"Thelen, E.","first_name":"E."}]},{"date_created":"2019-07-12T05:30:31Z","author":[{"full_name":"Steinbiss, Volker","last_name":"Steinbiss","first_name":"Volker"},{"last_name":"Ney","full_name":"Ney, Hermann J.","first_name":"Hermann J."},{"first_name":"Xavier L.","full_name":"Aubert, Xavier L.","last_name":"Aubert"},{"last_name":"Besling","full_name":"Besling, Stefan","first_name":"Stefan"},{"last_name":"Dugast","full_name":"Dugast, Christian","first_name":"Christian"},{"last_name":"Essen","full_name":"Essen, Ute","first_name":"Ute"},{"full_name":"Geller, Dieter","last_name":"Geller","first_name":"Dieter"},{"first_name":"Reinhold","id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach"},{"full_name":"Kneser, Reinhard","last_name":"Kneser","first_name":"Reinhard"},{"full_name":"Meier, Hans Günter","last_name":"Meier","first_name":"Hans Günter"},{"first_name":"Martin","last_name":"Oerder","full_name":"Oerder, Martin"},{"first_name":"Bach Hiep","last_name":"Tran","full_name":"Tran, Bach Hiep"}],"date_updated":"2022-01-06T06:51:12Z","title":"The Philips Research system for continuous-speech dictation","citation":{"ama":"Steinbiss V, Ney HJ, Aubert XL, et al. The Philips Research system for continuous-speech dictation. <i>Philips Journal of Research</i>. 1995.","ieee":"V. Steinbiss <i>et al.</i>, “The Philips Research system for continuous-speech dictation,” <i>Philips Journal of Research</i>, 1995.","chicago":"Steinbiss, Volker, Hermann J. Ney, Xavier L. Aubert, Stefan Besling, Christian Dugast, Ute Essen, Dieter Geller, et al. “The Philips Research System for Continuous-Speech Dictation.” <i>Philips Journal of Research</i>, 1995.","short":"V. Steinbiss, H.J. Ney, X.L. Aubert, S. Besling, C. Dugast, U. Essen, D. Geller, R. Haeb-Umbach, R. Kneser, H.G. Meier, M. Oerder, B.H. Tran, Philips Journal of Research (1995).","mla":"Steinbiss, Volker, et al. “The Philips Research System for Continuous-Speech Dictation.” <i>Philips Journal of Research</i>, 1995.","bibtex":"@article{Steinbiss_Ney_Aubert_Besling_Dugast_Essen_Geller_Haeb-Umbach_Kneser_Meier_et al._1995, title={The Philips Research system for continuous-speech dictation}, journal={Philips Journal of Research}, author={Steinbiss, Volker and Ney, Hermann J. and Aubert, Xavier L. and Besling, Stefan and Dugast, Christian and Essen, Ute and Geller, Dieter and Haeb-Umbach, Reinhold and Kneser, Reinhard and Meier, Hans Günter and et al.}, year={1995} }","apa":"Steinbiss, V., Ney, H. J., Aubert, X. L., Besling, S., Dugast, C., Essen, U., … Tran, B. H. (1995). The Philips Research system for continuous-speech dictation. <i>Philips Journal of Research</i>."},"year":"1995","user_id":"44006","department":[{"_id":"54"}],"_id":"11905","language":[{"iso":"eng"}],"type":"journal_article","publication":"Philips Journal of Research","status":"public","abstract":[{"text":"This paper gives an overview of the Philips Research system for continuous-speech recognition. The recognition architecture is based on an integrated statistical approach. The system has been successfully applied to various tasks in American English and German, ranging from small vocabulary tasks to very large vocabulary tasks and from recognition only to speech understanding. Here, we concentrate on phoneme-based continuous-speech recognition for large vocabulary recognition as used for dictation, which covers a significant part of our research work on speech recognition. We describe this task and report on experimental results. In order to allow a comparison with the performance of other systems, a section with an evaluation on the standard North American Business news (NAB2) task (dictation of American English newspaper text) is supplied.","lang":"eng"}]},{"citation":{"apa":"Steinbiss, V., Ney, H. J., Essen, U., Tran, B. H., Aubert, X. L., Dugast, C., … Bartosik, H. (1995). Continuous speech dictation - From theory to practice. <i>Speech Communication</i>.","short":"V. Steinbiss, H.J. Ney, U. Essen, B.H. Tran, X.L. Aubert, C. Dugast, R. Kneser, H.G. Meier, M. Oerder, R. Haeb-Umbach, D. Geller, W. Hoellerbauer, H. Bartosik, Speech Communication (1995).","bibtex":"@article{Steinbiss_Ney_Essen_Tran_Aubert_Dugast_Kneser_Meier_Oerder_Haeb-Umbach_et al._1995, title={Continuous speech dictation - From theory to practice}, journal={Speech Communication}, author={Steinbiss, Volker and Ney, Hermann J. and Essen, Ute and Tran, Bach Hiep and Aubert, Xavier L. and Dugast, Christian and Kneser, Reinhard and Meier, Hans Günter and Oerder, Martin and Haeb-Umbach, Reinhold and et al.}, year={1995} }","mla":"Steinbiss, Volker, et al. “Continuous Speech Dictation - From Theory to Practice.” <i>Speech Communication</i>, 1995.","ieee":"V. Steinbiss <i>et al.</i>, “Continuous speech dictation - From theory to practice,” <i>Speech Communication</i>, 1995.","chicago":"Steinbiss, Volker, Hermann J. Ney, Ute Essen, Bach Hiep Tran, Xavier L. Aubert, Christian Dugast, Reinhard Kneser, et al. “Continuous Speech Dictation - From Theory to Practice.” <i>Speech Communication</i>, 1995.","ama":"Steinbiss V, Ney HJ, Essen U, et al. Continuous speech dictation - From theory to practice. <i>Speech Communication</i>. 1995."},"year":"1995","date_created":"2019-07-12T12:22:00Z","author":[{"first_name":"Volker","full_name":"Steinbiss, Volker","last_name":"Steinbiss"},{"first_name":"Hermann J.","full_name":"Ney, Hermann J.","last_name":"Ney"},{"last_name":"Essen","full_name":"Essen, Ute","first_name":"Ute"},{"last_name":"Tran","full_name":"Tran, Bach Hiep","first_name":"Bach Hiep"},{"full_name":"Aubert, Xavier L.","last_name":"Aubert","first_name":"Xavier L."},{"last_name":"Dugast","full_name":"Dugast, Christian","first_name":"Christian"},{"first_name":"Reinhard","last_name":"Kneser","full_name":"Kneser, Reinhard"},{"full_name":"Meier, Hans Günter","last_name":"Meier","first_name":"Hans Günter"},{"first_name":"Martin","last_name":"Oerder","full_name":"Oerder, Martin"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach"},{"last_name":"Geller","full_name":"Geller, Dieter","first_name":"Dieter"},{"first_name":"W.","last_name":"Hoellerbauer","full_name":"Hoellerbauer, W."},{"first_name":"H.","last_name":"Bartosik","full_name":"Bartosik, H."}],"date_updated":"2022-01-06T06:51:13Z","title":"Continuous speech dictation - From theory to practice","publication":"Speech Communication","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"This paper gives an overview of the Philips research system for phoneme-based, large-vocabulary, continuousspeech recognition. The system has been successfully applied to various tasks in the German and (American) English languages, ranging from small vocabulary tasks to very large vocabulary tasks. Here, we concentrate on continuousspeech recognition for dictation in real applications, the dictation of legal reports and radiology reports in German. We describe this task and report on experimental results. We also describe a commercial PC-based dictation system which includes a PC implementation of our scientific recognition prototype. In order to allow for a comparison with the performance of other systems, a section with an evaluation on the standard Wall Street Journal task (dictation of American English newspaper text) is supplied. The recognition architecture is based on an integrated statistical approach. We describe the characteristic features of the system as opposed to other systems: 1. the Viterbi criterion is consistently applied both in training and testing; 2. continuous mixture densities are used without tying or smoothing; 3. time-synchronous beam search in connection with a phoneme look-ahead is applied to a tree-organized lexicon."}],"department":[{"_id":"54"}],"user_id":"44006","_id":"11948","language":[{"iso":"eng"}]},{"publication":"IEEE Transactions on Speech and Audio Processing","type":"journal_article","status":"public","abstract":[{"text":"The authors describe the improvements in a time-synchronous beam search strategy for a 10000-word continuous-speech recognition task. Basically they introduced two measures, namely a tree organization of the pronunciation lexicon and a novel look-ahead technique at the phoneme level. The experimental tests performed showed that the number of state hypotheses could be reduced from 50000 to 3000, i.e., by a factor of about 17. At the same time, the word error rate did not increase.","lang":"eng"}],"department":[{"_id":"54"}],"user_id":"44006","_id":"11796","language":[{"iso":"eng"}],"citation":{"mla":"Haeb-Umbach, Reinhold, and Hermann Ney. “Improvements in Beam Search for 10000-Word Continuous-Speech Recognition.” <i>IEEE Transactions on Speech and Audio Processing</i>, 1994.","short":"R. Haeb-Umbach, H. Ney, IEEE Transactions on Speech and Audio Processing (1994).","bibtex":"@article{Haeb-Umbach_Ney_1994, title={Improvements in beam search for 10000-word continuous-speech recognition}, journal={IEEE Transactions on Speech and Audio Processing}, author={Haeb-Umbach, Reinhold and Ney, Hermann}, year={1994} }","apa":"Haeb-Umbach, R., &#38; Ney, H. (1994). Improvements in beam search for 10000-word continuous-speech recognition. <i>IEEE Transactions on Speech and Audio Processing</i>.","ieee":"R. Haeb-Umbach and H. Ney, “Improvements in beam search for 10000-word continuous-speech recognition,” <i>IEEE Transactions on Speech and Audio Processing</i>, 1994.","chicago":"Haeb-Umbach, Reinhold, and Hermann Ney. “Improvements in Beam Search for 10000-Word Continuous-Speech Recognition.” <i>IEEE Transactions on Speech and Audio Processing</i>, 1994.","ama":"Haeb-Umbach R, Ney H. Improvements in beam search for 10000-word continuous-speech recognition. <i>IEEE Transactions on Speech and Audio Processing</i>. 1994."},"year":"1994","author":[{"last_name":"Haeb-Umbach","id":"242","full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold"},{"first_name":"Hermann","last_name":"Ney","full_name":"Ney, Hermann"}],"date_created":"2019-07-12T05:28:25Z","date_updated":"2022-01-06T06:51:08Z","title":"Improvements in beam search for 10000-word continuous-speech recognition"},{"title":"Progress in Large-Vocabulary, Continuous Speech Recognition","date_updated":"2022-01-06T06:51:11Z","author":[{"full_name":"Ney, Hermann","last_name":"Ney","first_name":"Hermann"},{"last_name":"Steinbeiss","full_name":"Steinbeiss, Volker","first_name":"Volker"},{"first_name":"Xavier L.","full_name":"Aubert, Xavier L.","last_name":"Aubert"},{"full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"date_created":"2019-07-12T05:30:00Z","year":"1994","citation":{"chicago":"Ney, Hermann, Volker Steinbeiss, Xavier L. Aubert, and Reinhold Haeb-Umbach. “Progress in Large-Vocabulary, Continuous Speech Recognition.” In <i>Artifical Intelligence, Progress and Prospects of Speech Research and Technology, Munich</i>, 1994.","ieee":"H. Ney, V. Steinbeiss, X. L. Aubert, and R. Haeb-Umbach, “Progress in Large-Vocabulary, Continuous Speech Recognition,” in <i>Artifical Intelligence, Progress and Prospects of Speech Research and Technology, Munich</i>, 1994.","ama":"Ney H, Steinbeiss V, Aubert XL, Haeb-Umbach R. Progress in Large-Vocabulary, Continuous Speech Recognition. In: <i>Artifical Intelligence, Progress and Prospects of Speech Research and Technology, Munich</i>. ; 1994.","apa":"Ney, H., Steinbeiss, V., Aubert, X. L., &#38; Haeb-Umbach, R. (1994). Progress in Large-Vocabulary, Continuous Speech Recognition. In <i>Artifical Intelligence, Progress and Prospects of Speech Research and Technology, Munich</i>.","mla":"Ney, Hermann, et al. “Progress in Large-Vocabulary, Continuous Speech Recognition.” <i>Artifical Intelligence, Progress and Prospects of Speech Research and Technology, Munich</i>, 1994.","short":"H. Ney, V. Steinbeiss, X.L. Aubert, R. Haeb-Umbach, in: Artifical Intelligence, Progress and Prospects of Speech Research and Technology, Munich, 1994.","bibtex":"@inproceedings{Ney_Steinbeiss_Aubert_Haeb-Umbach_1994, title={Progress in Large-Vocabulary, Continuous Speech Recognition}, booktitle={Artifical Intelligence, Progress and Prospects of Speech Research and Technology, Munich}, author={Ney, Hermann and Steinbeiss, Volker and Aubert, Xavier L. and Haeb-Umbach, Reinhold}, year={1994} }"},"language":[{"iso":"eng"}],"_id":"11878","user_id":"44006","department":[{"_id":"54"}],"status":"public","type":"conference","publication":"Artifical Intelligence, Progress and Prospects of Speech Research and Technology, Munich"},{"language":[{"iso":"eng"}],"_id":"11879","department":[{"_id":"54"}],"user_id":"44006","abstract":[{"text":"This paper gives an overview of a research system for phoneme based, large vocabulary continuous speech recognition. The system to be described has been applied to the SPICOS task, the DARPA RM task and a 12000 word dictation task. Experimental results for these three tasks will be presented. Like many other systems, the recognition architecture is based on an integrated statistical approach. In this paper, we describe the characteristic features of the system as opposed to other systems: (1) The Viterbi criterion is consistently applied both in training and testing. (2) Continuous mixture densities are used without any tying or smoothing; this approach can be viewed as a sort of ‘statistical template matching’. (3) Time-synchronous beam search is used consistently throughout all tasks; extensions using a tree organization of the vocabulary and phoneme lookahead are presented so that a 12000 word task can be handled.","lang":"eng"}],"status":"public","publication":"International Journal on Pattern Recognition and Artificial Intelligence","type":"journal_article","title":"An Overview of the Philips Research System for Large Vocabulary Continuous Speech Recognition","date_updated":"2022-01-06T06:51:11Z","date_created":"2019-07-12T05:30:01Z","author":[{"full_name":"Ney, Hermann","last_name":"Ney","first_name":"Hermann"},{"first_name":"Volker","full_name":"Steinbeiss, Volker","last_name":"Steinbeiss"},{"last_name":"Haeb-Umbach","full_name":"Haeb-Umbach, Reinhold","id":"242","first_name":"Reinhold"},{"first_name":"Bach Hiep","full_name":"Tran, Bach Hiep","last_name":"Tran"}],"year":"1994","citation":{"chicago":"Ney, Hermann, Volker Steinbeiss, Reinhold Haeb-Umbach, and Bach Hiep Tran. “An Overview of the Philips Research System for Large Vocabulary Continuous Speech Recognition.” <i>International Journal on Pattern Recognition and Artificial Intelligence</i>, 1994.","ieee":"H. Ney, V. Steinbeiss, R. Haeb-Umbach, and B. H. Tran, “An Overview of the Philips Research System for Large Vocabulary Continuous Speech Recognition,” <i>International Journal on Pattern Recognition and Artificial Intelligence</i>, 1994.","ama":"Ney H, Steinbeiss V, Haeb-Umbach R, Tran BH. An Overview of the Philips Research System for Large Vocabulary Continuous Speech Recognition. <i>International Journal on Pattern Recognition and Artificial Intelligence</i>. 1994.","apa":"Ney, H., Steinbeiss, V., Haeb-Umbach, R., &#38; Tran, B. H. (1994). An Overview of the Philips Research System for Large Vocabulary Continuous Speech Recognition. <i>International Journal on Pattern Recognition and Artificial Intelligence</i>.","short":"H. Ney, V. Steinbeiss, R. Haeb-Umbach, B.H. Tran, International Journal on Pattern Recognition and Artificial Intelligence (1994).","bibtex":"@article{Ney_Steinbeiss_Haeb-Umbach_Tran_1994, title={An Overview of the Philips Research System for Large Vocabulary Continuous Speech Recognition}, journal={International Journal on Pattern Recognition and Artificial Intelligence}, author={Ney, Hermann and Steinbeiss, Volker and Haeb-Umbach, Reinhold and Tran, Bach Hiep}, year={1994} }","mla":"Ney, Hermann, et al. “An Overview of the Philips Research System for Large Vocabulary Continuous Speech Recognition.” <i>International Journal on Pattern Recognition and Artificial Intelligence</i>, 1994."}},{"oa":"1","date_updated":"2022-01-06T06:51:07Z","date_created":"2019-07-12T05:26:55Z","author":[{"first_name":"Xavier L.","full_name":"Aubert, Xavier L.","last_name":"Aubert"},{"last_name":"Haeb-Umbach","id":"242","full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold"},{"last_name":"Ney","full_name":"Ney, Hermann","first_name":"Hermann"}],"title":"Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/1993/ICASSP_1993_Haeb1_paper.pdf","open_access":"1"}],"year":"1993","citation":{"apa":"Aubert, X. L., Haeb-Umbach, R., &#38; Ney, H. (1993). Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models. In <i>ICASSP, Minneapolis</i>.","bibtex":"@inproceedings{Aubert_Haeb-Umbach_Ney_1993, title={Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models}, booktitle={ICASSP, Minneapolis}, author={Aubert, Xavier L. and Haeb-Umbach, Reinhold and Ney, Hermann}, year={1993} }","short":"X.L. Aubert, R. Haeb-Umbach, H. Ney, in: ICASSP, Minneapolis, 1993.","mla":"Aubert, Xavier L., et al. “Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models.” <i>ICASSP, Minneapolis</i>, 1993.","ieee":"X. L. Aubert, R. Haeb-Umbach, and H. Ney, “Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models,” in <i>ICASSP, Minneapolis</i>, 1993.","chicago":"Aubert, Xavier L., Reinhold Haeb-Umbach, and Hermann Ney. “Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models.” In <i>ICASSP, Minneapolis</i>, 1993.","ama":"Aubert XL, Haeb-Umbach R, Ney H. Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models. In: <i>ICASSP, Minneapolis</i>. ; 1993."},"_id":"11718","user_id":"44006","department":[{"_id":"54"}],"language":[{"iso":"eng"}],"type":"conference","publication":"ICASSP, Minneapolis","abstract":[{"lang":"eng","text":"Linear discriminant analysis (LDA) experiments reported previously (ICASSP-92 vol.1, p.13-16), are extended to context-dependent models and speaker-independent large vocabulary continuous speech recognition. Two variants of using mixture densities are compared: state-specific modeling and the monophone-tying approach where densities are shared across the states relevant to the same phoneme. Results are presented on the DARPA Resource Management (RM) task for both speaker-dependent (SD) and speaker-independent (SI) parts. Using triphone models based on LDA and continuous mixture densities, significant improvements have been observed and the following word error rates have been achieved: for the SD part, 7.8% without grammar and 1.5% with word pair; and for the SI part, 17.2% and 4.6%, respectively. These scores are averaged over 1200 SD or SI evaluation sentences and are among the best published so far on the RM database."}],"status":"public"},{"_id":"11749","user_id":"44006","department":[{"_id":"54"}],"language":[{"iso":"eng"}],"type":"journal_article","publication":"Speech Communication","abstract":[{"text":"To decrease the hazards of using mobile phones while driving, voice processing provides several tools that simplify their use: echo cancellation allows comfortable hands-free conversation, feedback and user guidance by voice allow to operate the phone in eyes-busy situations, and last not least speech recognition frees from keypad data entry to operate the telephone. A comprehensive view of a device incorporating the above mentioned technologies, which has been realized as an add-on for the Philips car telephone family, will be presented. Emphasis is placed on the speech recognition algorithms. Robustness of the algorithms to changing acoustic environment was improved by estimating and subtracting the long-term spectrum. We will show that, if this operation is done recursively, it is equivalent to the high-pass filtering or RASTA (Relative Spectral Approaches) methods recently proposed in the literature.","lang":"eng"}],"status":"public","date_updated":"2022-01-06T06:51:08Z","date_created":"2019-07-12T05:27:31Z","author":[{"last_name":"Dobler","full_name":"Dobler, Stefan","first_name":"Stefan"},{"first_name":"Dieter","full_name":"Geller, Dieter","last_name":"Geller"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach"},{"last_name":"Meyer","full_name":"Meyer, Peter","first_name":"Peter"},{"first_name":"Hermann","last_name":"Ney","full_name":"Ney, Hermann"},{"full_name":"Ruehl, Hans Wilhelm","last_name":"Ruehl","first_name":"Hans Wilhelm"}],"title":"Design and use of speech recognition algorithms for a mobile radio telephone","year":"1993","citation":{"apa":"Dobler, S., Geller, D., Haeb-Umbach, R., Meyer, P., Ney, H., &#38; Ruehl, H. W. (1993). Design and use of speech recognition algorithms for a mobile radio telephone. <i>Speech Communication</i>.","short":"S. Dobler, D. Geller, R. Haeb-Umbach, P. Meyer, H. Ney, H.W. Ruehl, Speech Communication (1993).","bibtex":"@article{Dobler_Geller_Haeb-Umbach_Meyer_Ney_Ruehl_1993, title={Design and use of speech recognition algorithms for a mobile radio telephone}, journal={Speech Communication}, author={Dobler, Stefan and Geller, Dieter and Haeb-Umbach, Reinhold and Meyer, Peter and Ney, Hermann and Ruehl, Hans Wilhelm}, year={1993} }","mla":"Dobler, Stefan, et al. “Design and Use of Speech Recognition Algorithms for a Mobile Radio Telephone.” <i>Speech Communication</i>, 1993.","ieee":"S. Dobler, D. Geller, R. Haeb-Umbach, P. Meyer, H. Ney, and H. W. Ruehl, “Design and use of speech recognition algorithms for a mobile radio telephone,” <i>Speech Communication</i>, 1993.","chicago":"Dobler, Stefan, Dieter Geller, Reinhold Haeb-Umbach, Peter Meyer, Hermann Ney, and Hans Wilhelm Ruehl. “Design and Use of Speech Recognition Algorithms for a Mobile Radio Telephone.” <i>Speech Communication</i>, 1993.","ama":"Dobler S, Geller D, Haeb-Umbach R, Meyer P, Ney H, Ruehl HW. Design and use of speech recognition algorithms for a mobile radio telephone. <i>Speech Communication</i>. 1993."}},{"main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/1993/ICASSP_1993_Haeb_paper.pdf"}],"title":"Improvements in Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities","author":[{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"},{"full_name":"Geller, Dieter","last_name":"Geller","first_name":"Dieter"},{"last_name":"Ney","full_name":"Ney, Hermann","first_name":"Hermann"}],"date_created":"2019-07-12T05:28:16Z","date_updated":"2022-01-06T06:51:08Z","oa":"1","citation":{"apa":"Haeb-Umbach, R., Geller, D., &#38; Ney, H. (1993). Improvements in Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities. In <i>ICASSP, Minneapolis</i>.","short":"R. Haeb-Umbach, D. Geller, H. Ney, in: ICASSP, Minneapolis, 1993.","mla":"Haeb-Umbach, Reinhold, et al. “Improvements in Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities.” <i>ICASSP, Minneapolis</i>, 1993.","bibtex":"@inproceedings{Haeb-Umbach_Geller_Ney_1993, title={Improvements in Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities}, booktitle={ICASSP, Minneapolis}, author={Haeb-Umbach, Reinhold and Geller, Dieter and Ney, Hermann}, year={1993} }","ama":"Haeb-Umbach R, Geller D, Ney H. Improvements in Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities. In: <i>ICASSP, Minneapolis</i>. ; 1993.","ieee":"R. Haeb-Umbach, D. Geller, and H. Ney, “Improvements in Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities,” in <i>ICASSP, Minneapolis</i>, 1993.","chicago":"Haeb-Umbach, Reinhold, Dieter Geller, and Hermann Ney. “Improvements in Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities.” In <i>ICASSP, Minneapolis</i>, 1993."},"year":"1993","language":[{"iso":"eng"}],"department":[{"_id":"54"}],"user_id":"44006","_id":"11788","status":"public","abstract":[{"text":"Four methods were used to reduce the error rate of a continuous-density hidden Markov-model-based speech recognizer on the TI/NIST connected-digits recognition task. Energy thresholding sets a lower limit on the energy in each frequency channel to suppress spurious distortion accumulation caused by random noise. This led to an improvement in error rate by 15%. Spectrum normalization was used to compensate for across-speaker variations, resulting in an additional improvement by 20%. The acoustic resolution was increased up to 32 component densities per mixture. Each doubling of the number of component densities yielded a reduction in error rate by roughly 20%. Linear discriminant analysis was used for improved feature selection. A single class-independent transformation matrix was applied to a large input vector consisting of several adjacent frames, resulting in an improvement by 20% for high acoustic resolution. The final string error rate was 0.84%.","lang":"eng"}],"publication":"ICASSP, Minneapolis","type":"conference"},{"year":"1993","citation":{"mla":"Steinbiss, Volker, et al. “The Philips Research System for Large-Vocabulary Continuous-Speech Recognition.” <i>EUROSPEECH, Berlin</i>, 1993.","bibtex":"@inproceedings{Steinbiss_Ney_Haeb-Umbach_Train_Essen_Kneser_Oerder_Meier_Aubert_Dugast_et al._1993, title={The Philips Research System for Large-Vocabulary Continuous-Speech Recognition}, booktitle={EUROSPEECH, Berlin}, author={Steinbiss, Volker and Ney, Hermann and Haeb-Umbach, Reinhold and Train, B.-H. and Essen, U. and Kneser, Reinhard and Oerder, Martin and Meier, H. G. and Aubert, X. and Dugast, Christian and et al.}, year={1993} }","short":"V. Steinbiss, H. Ney, R. Haeb-Umbach, B.-H. Train, U. Essen, R. Kneser, M. Oerder, H.G. Meier, X. Aubert, C. Dugast, D. Geller, W. Hoellerbauer, H. Bartosik, in: EUROSPEECH, Berlin, 1993.","apa":"Steinbiss, V., Ney, H., Haeb-Umbach, R., Train, B.-H., Essen, U., Kneser, R., … Bartosik, H. (1993). The Philips Research System for Large-Vocabulary Continuous-Speech Recognition. In <i>EUROSPEECH, Berlin</i>.","ama":"Steinbiss V, Ney H, Haeb-Umbach R, et al. The Philips Research System for Large-Vocabulary Continuous-Speech Recognition. In: <i>EUROSPEECH, Berlin</i>. ; 1993.","ieee":"V. Steinbiss <i>et al.</i>, “The Philips Research System for Large-Vocabulary Continuous-Speech Recognition,” in <i>EUROSPEECH, Berlin</i>, 1993.","chicago":"Steinbiss, Volker, Hermann Ney, Reinhold Haeb-Umbach, B.-H. Train, U. Essen, Reinhard Kneser, Martin Oerder, et al. “The Philips Research System for Large-Vocabulary Continuous-Speech Recognition.” In <i>EUROSPEECH, Berlin</i>, 1993."},"title":"The Philips Research System for Large-Vocabulary Continuous-Speech Recognition","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/1993/Eurospeech_1993_Haeb_paper.pdf","open_access":"1"}],"date_updated":"2022-01-06T06:51:12Z","oa":"1","author":[{"first_name":"Volker","last_name":"Steinbiss","full_name":"Steinbiss, Volker"},{"first_name":"Hermann","last_name":"Ney","full_name":"Ney, Hermann"},{"first_name":"Reinhold","id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach"},{"first_name":"B.-H.","last_name":"Train","full_name":"Train, B.-H."},{"full_name":"Essen, U.","last_name":"Essen","first_name":"U."},{"full_name":"Kneser, Reinhard","last_name":"Kneser","first_name":"Reinhard"},{"first_name":"Martin","last_name":"Oerder","full_name":"Oerder, Martin"},{"full_name":"Meier, H. G.","last_name":"Meier","first_name":"H. G."},{"first_name":"X.","last_name":"Aubert","full_name":"Aubert, X."},{"first_name":"Christian","full_name":"Dugast, Christian","last_name":"Dugast"},{"last_name":"Geller","full_name":"Geller, Dieter","first_name":"Dieter"},{"first_name":"W.","full_name":"Hoellerbauer, W.","last_name":"Hoellerbauer"},{"first_name":"H.","full_name":"Bartosik, H.","last_name":"Bartosik"}],"date_created":"2019-07-12T05:30:30Z","abstract":[{"lang":"eng","text":"This paper gives a status report of the Philips research system for phoneme-based, large-vocabulary, continuous-speech recognition. Like for many other systems, the recognition architecture is based on an integrated statistical approach. We describe the characteristic features of the system as opposed to other systems: 1. The Viterbi criterion is consistently applied both in training and testing. 2. Continuous mixture densities are used without tying or smoothing. 3. Time-synchronous beam search in connection with a phoneme look-ahead is applied to a tree-organized lexicon. The system has been successfully applied to the American English DARPA RM task. Here, we report experimental results for a German 13 000-word Philips internal dictation task. In addition to the scientific prototype, a PC version has been set up which is described here for the first time."}],"status":"public","type":"conference","publication":"EUROSPEECH, Berlin","language":[{"iso":"eng"}],"_id":"11904","user_id":"44006","department":[{"_id":"54"}]},{"year":"1992","status":"public","citation":{"bibtex":"@inproceedings{Aubert_Ney_Haeb-Umbach_1992, title={The Philips Research System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA RM Task}, booktitle={DRAPA Speech Workshop}, author={Aubert, Xavier L. and Ney, Hermann and Haeb-Umbach, Reinhold}, year={1992} }","mla":"Aubert, Xavier L., et al. “The Philips Research System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA RM Task.” <i>DRAPA Speech Workshop</i>, 1992.","short":"X.L. Aubert, H. Ney, R. Haeb-Umbach, in: DRAPA Speech Workshop, 1992.","apa":"Aubert, X. L., Ney, H., &#38; Haeb-Umbach, R. (1992). The Philips Research System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA RM Task. In <i>DRAPA Speech Workshop</i>.","ieee":"X. L. Aubert, H. Ney, and R. Haeb-Umbach, “The Philips Research System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA RM Task,” in <i>DRAPA Speech Workshop</i>, 1992.","chicago":"Aubert, Xavier L., Hermann Ney, and Reinhold Haeb-Umbach. “The Philips Research System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA RM Task.” In <i>DRAPA Speech Workshop</i>, 1992.","ama":"Aubert XL, Ney H, Haeb-Umbach R. The Philips Research System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA RM Task. In: <i>DRAPA Speech Workshop</i>. ; 1992."},"publication":"DRAPA Speech Workshop","type":"conference","title":"The Philips Research System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA RM Task","language":[{"iso":"eng"}],"_id":"11719","date_updated":"2022-01-06T06:51:07Z","department":[{"_id":"54"}],"user_id":"44006","author":[{"first_name":"Xavier L.","last_name":"Aubert","full_name":"Aubert, Xavier L."},{"full_name":"Ney, Hermann","last_name":"Ney","first_name":"Hermann"},{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"date_created":"2019-07-12T05:26:56Z"},{"language":[{"iso":"eng"}],"_id":"11769","user_id":"44006","department":[{"_id":"54"}],"status":"public","type":"conference","publication":"ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu","title":"Improvements in Speech Recognition for Voice Dialling in the Car Environment","date_updated":"2022-01-06T06:51:08Z","date_created":"2019-07-12T05:27:54Z","author":[{"full_name":"Geller, Dieter","last_name":"Geller","first_name":"Dieter"},{"first_name":"Reinhold","id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach"},{"full_name":"Ney, Hermann","last_name":"Ney","first_name":"Hermann"}],"year":"1992","citation":{"ama":"Geller D, Haeb-Umbach R, Ney H. Improvements in Speech Recognition for Voice Dialling in the Car Environment. In: <i>ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu</i>. ; 1992.","ieee":"D. Geller, R. Haeb-Umbach, and H. Ney, “Improvements in Speech Recognition for Voice Dialling in the Car Environment,” in <i>ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu</i>, 1992.","chicago":"Geller, Dieter, Reinhold Haeb-Umbach, and Hermann Ney. “Improvements in Speech Recognition for Voice Dialling in the Car Environment.” In <i>ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu</i>, 1992.","mla":"Geller, Dieter, et al. “Improvements in Speech Recognition for Voice Dialling in the Car Environment.” <i>ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu</i>, 1992.","bibtex":"@inproceedings{Geller_Haeb-Umbach_Ney_1992, title={Improvements in Speech Recognition for Voice Dialling in the Car Environment}, booktitle={ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu}, author={Geller, Dieter and Haeb-Umbach, Reinhold and Ney, Hermann}, year={1992} }","short":"D. Geller, R. Haeb-Umbach, H. Ney, in: ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu, 1992.","apa":"Geller, D., Haeb-Umbach, R., &#38; Ney, H. (1992). Improvements in Speech Recognition for Voice Dialling in the Car Environment. In <i>ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu</i>."}},{"year":"1992","citation":{"apa":"Haeb-Umbach, R. (1992). A modified trellis coding technique for partial response channels. <i>IEEE Transactions on Communications</i>.","bibtex":"@article{Haeb-Umbach_1992, title={A modified trellis coding technique for partial response channels}, journal={IEEE Transactions on Communications}, author={Haeb-Umbach, Reinhold}, year={1992} }","mla":"Haeb-Umbach, Reinhold. “A Modified Trellis Coding Technique for Partial Response Channels.” <i>IEEE Transactions on Communications</i>, 1992.","short":"R. Haeb-Umbach, IEEE Transactions on Communications (1992).","ama":"Haeb-Umbach R. A modified trellis coding technique for partial response channels. <i>IEEE Transactions on Communications</i>. 1992.","ieee":"R. Haeb-Umbach, “A modified trellis coding technique for partial response channels,” <i>IEEE Transactions on Communications</i>, 1992.","chicago":"Haeb-Umbach, Reinhold. “A Modified Trellis Coding Technique for Partial Response Channels.” <i>IEEE Transactions on Communications</i>, 1992."},"title":"A modified trellis coding technique for partial response channels","date_updated":"2022-01-06T06:51:08Z","date_created":"2019-07-12T05:28:09Z","author":[{"full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"abstract":[{"text":"The problem of trellis coding for multilevel baseband transmission over partial response channels with transfer polynomials of the form (1+or-D/sup N/) is addressed. The novel method presented here accounts for the channel memory by using multidimensional signal sets and partitioning the signal set present at the noiseless channel output. It is shown that this coding technique can be viewed as a generalization of a well-known procedure for binary signaling: the concatenation of convolutional codes and inner block codes that are tuned to the channel polynomial. It results in high coding gains with moderate complexity if some bandwidth expansion is accepted.","lang":"eng"}],"status":"public","publication":"IEEE Transactions on Communications","type":"journal_article","language":[{"iso":"eng"}],"_id":"11782","department":[{"_id":"54"}],"user_id":"44006"},{"publication":"IEEE Journal on Selected Areas in Communications","type":"journal_article","status":"public","abstract":[{"text":"The authors present conditions on the error sequences between channel input sequences which guarantee certain lower bounds on the free Euclidian distance at the output of a partial-response (PR) class I or II channel. From these expressions, trellis codes are derived which improve performance of binary signaling over noisy PR channels with reduced complexity maximum-likelihood sequence detection. They are shown to be compatible with the input restriction caused by the magnetooptical resonant coil direct overwrite recording scheme. The codes achieve high signal-to-noise ratio coding gains of 3 dB (on PR class I) and 2.2 dB (on PR class II) with rates as close to, but strictly less than, the capacity of the initial input restriction as desired. The performance of these codes is analyzed with an optical channel simulation system which shows that one code has the rare but highly desirable property that its maximum-likelihood sequence detector (MLSD) is less complex than the MLSD of the reference system and still achieves an error rate performance gain of 1.8 dB","lang":"eng"}],"department":[{"_id":"54"}],"user_id":"44006","_id":"11792","language":[{"iso":"eng"}],"citation":{"chicago":"Haeb-Umbach, Reinhold, and Robert Lynch. “Trellis Codes for Partial-Response Magnetooptical Direct Overwrite Recording.” <i>IEEE Journal on Selected Areas in Communications</i>, 1992.","ieee":"R. Haeb-Umbach and R. Lynch, “Trellis codes for partial-response magnetooptical direct overwrite recording,” <i>IEEE Journal on Selected Areas in Communications</i>, 1992.","ama":"Haeb-Umbach R, Lynch R. Trellis codes for partial-response magnetooptical direct overwrite recording. <i>IEEE Journal on Selected Areas in Communications</i>. 1992.","short":"R. Haeb-Umbach, R. Lynch, IEEE Journal on Selected Areas in Communications (1992).","mla":"Haeb-Umbach, Reinhold, and Robert Lynch. “Trellis Codes for Partial-Response Magnetooptical Direct Overwrite Recording.” <i>IEEE Journal on Selected Areas in Communications</i>, 1992.","bibtex":"@article{Haeb-Umbach_Lynch_1992, title={Trellis codes for partial-response magnetooptical direct overwrite recording}, journal={IEEE Journal on Selected Areas in Communications}, author={Haeb-Umbach, Reinhold and Lynch, Robert}, year={1992} }","apa":"Haeb-Umbach, R., &#38; Lynch, R. (1992). Trellis codes for partial-response magnetooptical direct overwrite recording. <i>IEEE Journal on Selected Areas in Communications</i>."},"year":"1992","date_created":"2019-07-12T05:28:21Z","author":[{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach"},{"first_name":"Robert","last_name":"Lynch","full_name":"Lynch, Robert"}],"date_updated":"2022-01-06T06:51:08Z","title":"Trellis codes for partial-response magnetooptical direct overwrite recording"},{"date_created":"2019-07-12T05:28:26Z","author":[{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"},{"last_name":"Ney","full_name":"Ney, Hermann","first_name":"Hermann"}],"date_updated":"2022-01-06T06:51:08Z","oa":"1","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/1992/ICASSP_1992_Haeb1_paper.pdf"}],"title":"Linear Discriminant Analysis for Improved Large Vocabulary Continuous Speech Recognition","citation":{"short":"R. Haeb-Umbach, H. Ney, in: ICASSP, San Francisco, 1992.","bibtex":"@inproceedings{Haeb-Umbach_Ney_1992, title={Linear Discriminant Analysis for Improved Large Vocabulary Continuous Speech Recognition}, booktitle={ICASSP, San Francisco}, author={Haeb-Umbach, Reinhold and Ney, Hermann}, year={1992} }","mla":"Haeb-Umbach, Reinhold, and Hermann Ney. “Linear Discriminant Analysis for Improved Large Vocabulary Continuous Speech Recognition.” <i>ICASSP, San Francisco</i>, 1992.","apa":"Haeb-Umbach, R., &#38; Ney, H. (1992). Linear Discriminant Analysis for Improved Large Vocabulary Continuous Speech Recognition. In <i>ICASSP, San Francisco</i>.","ama":"Haeb-Umbach R, Ney H. Linear Discriminant Analysis for Improved Large Vocabulary Continuous Speech Recognition. In: <i>ICASSP, San Francisco</i>. ; 1992.","ieee":"R. Haeb-Umbach and H. Ney, “Linear Discriminant Analysis for Improved Large Vocabulary Continuous Speech Recognition,” in <i>ICASSP, San Francisco</i>, 1992.","chicago":"Haeb-Umbach, Reinhold, and Hermann Ney. “Linear Discriminant Analysis for Improved Large Vocabulary Continuous Speech Recognition.” In <i>ICASSP, San Francisco</i>, 1992."},"year":"1992","user_id":"44006","department":[{"_id":"54"}],"_id":"11797","language":[{"iso":"eng"}],"type":"conference","publication":"ICASSP, San Francisco","status":"public","abstract":[{"lang":"eng","text":"The interaction of linear discriminant analysis (LDA) and a modeling approach using continuous Laplacian mixture density HMM is studied experimentally. The largest improvements in speech recognition could be obtained when the classes for the LDA transform were defined to be sub-phone units. On a 12000 word German recognition task with small overlap between training and test vocabulary a reduction in error rate by one-fifth was achieved compared to the case without LDA. On the development set of the DARPA RM1 task the error rate was reduced by one-third. For the DARPA speaker-dependent no-grammar case, the error rate averaged over 12 speakers was 9.9%. This was achieved with a recognizer using LDA and a set of only 47 Viterbi-trained context-independent phonemes."}]},{"_id":"11877","department":[{"_id":"54"}],"user_id":"44006","language":[{"iso":"eng"}],"publication":"ICASSP, San Francisco","type":"conference","abstract":[{"lang":"eng","text":"This paper describes the improvements in a time synchronous beam search strategy for a 10000-word continuous speech recognition task. The improvements are based on two measures: a tree-organization of the pronunciation lexicon and a novel look-ahead technique at the phoneme level, both of which interact directly with the detailed search at the state levels of the phoneme models. Experimental tests were performed for four speakers on a 12306-word task. As a result of the above measures, the overall search effort was reduced by a factor of 17 without a loss in recognition accuracy."}],"status":"public","date_updated":"2022-01-06T06:51:11Z","oa":"1","author":[{"first_name":"Hermann","full_name":"Ney, Hermann","last_name":"Ney"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach"},{"first_name":"B. H.","last_name":"Tran","full_name":"Tran, B. H."},{"full_name":"Oerder, Martin","last_name":"Oerder","first_name":"Martin"}],"date_created":"2019-07-12T05:29:59Z","title":"Improvements in Beam Search for 10,000-Word-Continuous Speech Recognition","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/1992/ICASSP_1992_Haeb_paper.pdf"}],"year":"1992","citation":{"apa":"Ney, H., Haeb-Umbach, R., Tran, B. H., &#38; Oerder, M. (1992). Improvements in Beam Search for 10,000-Word-Continuous Speech Recognition. In <i>ICASSP, San Francisco</i>.","bibtex":"@inproceedings{Ney_Haeb-Umbach_Tran_Oerder_1992, title={Improvements in Beam Search for 10,000-Word-Continuous Speech Recognition}, booktitle={ICASSP, San Francisco}, author={Ney, Hermann and Haeb-Umbach, Reinhold and Tran, B. H. and Oerder, Martin}, year={1992} }","mla":"Ney, Hermann, et al. “Improvements in Beam Search for 10,000-Word-Continuous Speech Recognition.” <i>ICASSP, San Francisco</i>, 1992.","short":"H. Ney, R. Haeb-Umbach, B.H. Tran, M. Oerder, in: ICASSP, San Francisco, 1992.","ieee":"H. Ney, R. Haeb-Umbach, B. H. Tran, and M. Oerder, “Improvements in Beam Search for 10,000-Word-Continuous Speech Recognition,” in <i>ICASSP, San Francisco</i>, 1992.","chicago":"Ney, Hermann, Reinhold Haeb-Umbach, B. H. Tran, and Martin Oerder. “Improvements in Beam Search for 10,000-Word-Continuous Speech Recognition.” In <i>ICASSP, San Francisco</i>, 1992.","ama":"Ney H, Haeb-Umbach R, Tran BH, Oerder M. Improvements in Beam Search for 10,000-Word-Continuous Speech Recognition. In: <i>ICASSP, San Francisco</i>. ; 1992."}},{"status":"public","abstract":[{"lang":"eng","text":"In a large vocabulary continuous speech recognition task the search for the \"best\" (in the maximum-a-posteriori sense) word sequence is the most (computing) time consuming part of the system. End-of-word hypotheses are created almost every time frame. With a stochastic language model every lexicon entry is an admissible successor candidate. By using a \"fast match\" module which scores the word candidates according to their acoustic feasibility ahead of the current time frame, the search cost can be considerably reduced. Only the fraction of the words with favourable fast match scores will be further processed in the detailed match, where the likelihood of a segment of acoustics given the word model is computed. We derive a novel word selection strategy which is \"consistent\" in the sense that it introduces no additional decoding errors and which still reduces the search space by a factor of 2 - 3 compared to standard Viterbi beam search. Giving up the consistency requirement, pruning strategies can be deduced which further reduce the search effort significantly: the size of the word startup list is reduced to 2% - 4% of its original size with a modest increase in error rate by l%-2%."}],"type":"conference","publication":"EUROSPEECH, Genova","language":[{"iso":"eng"}],"user_id":"44006","department":[{"_id":"54"}],"_id":"11798","citation":{"apa":"Haeb-Umbach, R., &#38; Ney, H. (1991). A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition. In <i>EUROSPEECH, Genova</i>.","short":"R. Haeb-Umbach, H. Ney, in: EUROSPEECH, Genova, 1991.","bibtex":"@inproceedings{Haeb-Umbach_Ney_1991, title={A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition}, booktitle={EUROSPEECH, Genova}, author={Haeb-Umbach, Reinhold and Ney, Hermann}, year={1991} }","mla":"Haeb-Umbach, Reinhold, and Hermann Ney. “A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition.” <i>EUROSPEECH, Genova</i>, 1991.","chicago":"Haeb-Umbach, Reinhold, and Hermann Ney. “A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition.” In <i>EUROSPEECH, Genova</i>, 1991.","ieee":"R. Haeb-Umbach and H. Ney, “A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition,” in <i>EUROSPEECH, Genova</i>, 1991.","ama":"Haeb-Umbach R, Ney H. A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition. In: <i>EUROSPEECH, Genova</i>. ; 1991."},"year":"1991","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/1991/Eurospeech_1991_Haeb_paper.pdf"}],"title":"A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition","author":[{"first_name":"Reinhold","last_name":"Haeb-Umbach","id":"242","full_name":"Haeb-Umbach, Reinhold"},{"full_name":"Ney, Hermann","last_name":"Ney","first_name":"Hermann"}],"date_created":"2019-07-12T05:28:28Z","oa":"1","date_updated":"2022-01-06T06:51:08Z"},{"department":[{"_id":"54"}],"user_id":"44006","_id":"11800","language":[{"iso":"eng"}],"publication":"International Conference on Communication, Atlanta","type":"conference","status":"public","abstract":[{"text":"The resonant bias coil technique requires even-numbered transitions to be written on even-numbered clock cycles, and odd-numbered transitions on odd-numbered clock cycles. This constraint is met by double-spaced run-length-limited (d, k, 2) codes where the number of consecutive zeros is even. Exploiting the polarity of the transitions, a detection window that has double the size of the code bit period is possible. The authors describe a detection circuit that achieves the enlarged detection window, and present a phase detector which is particularly simple to implement. Channel bit-error-rate measurements have been carried out employing a rate 1/3 (2, 8, 2) code. Error rates of 10/sup -8/ were achieved for recording densities up to 33 kb/in. The results demonstrate the expected excellent immunity of the direct overwrite scheme to bloom.","lang":"eng"}],"date_created":"2019-07-12T05:28:30Z","author":[{"last_name":"Haeb-Umbach","full_name":"Haeb-Umbach, Reinhold","id":"242","first_name":"Reinhold"},{"last_name":"Rugar","full_name":"Rugar, D.","first_name":"D."},{"first_name":"T.","last_name":"Howell","full_name":"Howell, T."},{"first_name":"G. P.","full_name":"Coleman, G. P.","last_name":"Coleman"}],"date_updated":"2022-01-06T06:51:09Z","oa":"1","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/1990/Conf.Atlanta_1990_Haeb_paper.pdf","open_access":"1"}],"title":"Coding and Signal Processing for a Magneto-optic Resonant Bias Coil Overwrite Experiment","citation":{"ama":"Haeb-Umbach R, Rugar D, Howell T, Coleman GP. Coding and Signal Processing for a Magneto-optic Resonant Bias Coil Overwrite Experiment. In: <i>International Conference on Communication, Atlanta</i>. ; 1990.","ieee":"R. Haeb-Umbach, D. Rugar, T. Howell, and G. P. Coleman, “Coding and Signal Processing for a Magneto-optic Resonant Bias Coil Overwrite Experiment,” in <i>International Conference on Communication, Atlanta</i>, 1990.","chicago":"Haeb-Umbach, Reinhold, D. Rugar, T. Howell, and G. P. Coleman. “Coding and Signal Processing for a Magneto-Optic Resonant Bias Coil Overwrite Experiment.” In <i>International Conference on Communication, Atlanta</i>, 1990.","bibtex":"@inproceedings{Haeb-Umbach_Rugar_Howell_Coleman_1990, title={Coding and Signal Processing for a Magneto-optic Resonant Bias Coil Overwrite Experiment}, booktitle={International Conference on Communication, Atlanta}, author={Haeb-Umbach, Reinhold and Rugar, D. and Howell, T. and Coleman, G. P.}, year={1990} }","short":"R. Haeb-Umbach, D. Rugar, T. Howell, G.P. Coleman, in: International Conference on Communication, Atlanta, 1990.","mla":"Haeb-Umbach, Reinhold, et al. “Coding and Signal Processing for a Magneto-Optic Resonant Bias Coil Overwrite Experiment.” <i>International Conference on Communication, Atlanta</i>, 1990.","apa":"Haeb-Umbach, R., Rugar, D., Howell, T., &#38; Coleman, G. P. (1990). Coding and Signal Processing for a Magneto-optic Resonant Bias Coil Overwrite Experiment. In <i>International Conference on Communication, Atlanta</i>."},"year":"1990"}]