Robust Adaptation to Non-Native Accents in Automatic Speech Recognition [electronic resource] /
Contributor(s): Goronzy, Silke [editor.] | SpringerLink (Online service).Material type: BookSeries: Lecture Notes in Computer Science: 2560Publisher: Berlin, Heidelberg : Springer Berlin Heidelberg, 2002.Description: XI, 146 p. online resource.Content type: text Media type: computer Carrier type: online resourceISBN: 9783540362906.Subject(s): Computer science | Mathematical logic | User interfaces (Computer systems) | Artificial intelligence | Computer Science | Artificial Intelligence (incl. Robotics) | Signal, Image and Speech Processing | Mathematical Logic and Formal Languages | User Interfaces and Human Computer InteractionOnline resources: Click here to access online
ASR:AnOverview -- Pre-processing of the Speech Data -- Stochastic Modelling of Speech -- Knowledge Bases of an ASR System -- Speaker Adaptation -- Confidence Measures -- Pronunciation Adaptation -- Future Work -- Summary -- Databases and Experimental Settings -- MLLR Results -- Phoneme Inventory.
Speech recognition technology is being increasingly employed in human-machine interfaces. A remaining problem however is the robustness of this technology to non-native accents, which still cause considerable difficulties for current systems. In this book, methods to overcome this problem are described. A speaker adaptation algorithm that is capable of adapting to the current speaker with just a few words of speaker-specific data based on the MLLR principle is developed and combined with confidence measures that focus on phone durations as well as on acoustic features. Furthermore, a specific pronunciation modelling technique that allows the automatic derivation of non-native pronunciations without using non-native data is described and combined with the previous techniques to produce a robust adaptation to non-native accents in an automatic speech recognition system.