Comparing Different Word Lattice Rescoring Approaches Towards Keyword Spotting
نویسندگان
چکیده
منابع مشابه
K Eyword S Potting on W Ord L Attices
In spite of its numerous potential applications, Automatic Speech Recognition (ASR) remains a difficult (and mainly unsolved) problem. In addition to the intrinsic difficulty of the task, users tend to go beyond the pre-defined lexicon words, and the important keywords necessary to understand voice requests are often lost in extra words. In this context, it is often interesting to develop Keywo...
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Detection of speech attributes, phones and words is a key component of a detection-based automatic speech recognition framework in the automatic speech attribute transcription project. This paper presents a two-stage approach, keywordfiller network method followed by knowledge-based pruning and rescoring, for detection of any given word in continuous speech. Different from conventional keyword ...
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This paper describes several approaches to keyword spotting (KWS) for informal continuous speech. We compare acoustic keyword spotting, spotting in word lattices generated by large vocabulary continuous speech recognition and a hybrid approach making use of phoneme lattices generated by a phoneme recognizer. The systems are compared on carefully defined test data extracted from ICSI meeting dat...
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Keyword spotting deals with the search of a reduced set of keywords in audio content. Phone Lattice-based approaches are very fast but achieve poor results. HMM-based keyword spotting systems deal with filler models to absorb the Out-of-vocabulary (OOV) words and achieve best results although they are slower. We propose a technique which combines them in order to perform a confidence measure to...
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The ever-increasing volume of audio data available online through the world wide web means that automatic methods for indexing and search are becoming essential. Hidden Markov model (HMM) keyword spotting and lattice search techniques are the two most common approaches used by such systems. In keyword spotting, models or templates are defined for each search term prior to accessing the speech a...
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تاریخ انتشار 2007