Automatic speech recognition (ASR) systems are finding increasing use in everyday life. Many of the commonplace environments where the systems are used are noisy, for example users calling up a voice search system from a busy cafeteria or a street. This can result in degraded speech recordings and adversely affect the performance of speech recognition systems. As the use of ASR systems increases, knowledge of the state-of-the-art in techniques to deal with such problems becomes critical to system and application engineers and researchers who work with or on ASR technologies. This book presents a comprehensive survey of the state-of-the-art in techniques used to improve the robustness of speech recognition systems to these degrading external influences. Key features: Reviews all the main noise robust ASR approaches, including signal separation, voice activity detection, robust feature extraction, model compensation and adaptation, missing data techniques and recognition of reverberant speech. Acts as a timely exposition of the topic in light of more widespread use in the future of ASR technology in challenging environments. Addresses robustness issues and signal degradation which are both key requirements for practitioners of ASR. Includes contributions from top ASR researchers from leading research units in the field
Follows a Romanian beggar living on the streets of Helsinki. Vatanescu, a young Romanian construction worker, desires two things: a future for himself and a pair of football boots for his son. So off he goes to a cold, dark country to beg. Despite reading about Finland in the novels of Arto Paasilinna, Vatanescu has no idea what he is in for, and soon he is living on the streets of Helsinki, throwing feasts from the contents of a dumpster with his fellow beggars. Little does he realize, however, that his employer is about to ruin his bacchanal, and much, much more ... As Vatanescu flees from international crime organizations as well as the Finnish police, he finds an unlikely companion: a hare who has been sentenced to death for living within Helsinki's city limits. Together, Vatanescu and his new fellow fugitive set on a journey from Lapland to the National Idea Park construction site, to the upper echelons of Finnish politics.
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