1991 · 13 citations · 1 references
Speech SciencesEngineeringUnlimited VocabularySpoken Language ProcessingPhonologyLanguage ProcessingSpeech RecognitionNatural Language ProcessingHidden Markov ModelComputational LinguisticsRobust Speech RecognitionAutomatic RecognitionVoice RecognitionChinese LanguageReal-time LanguageSpeech Signal AnalysisSpoken Language UnderstandingHealth SciencesComputer ScienceSpeech AcquisitionSpeech CommunicationSpeech TechnologyChinese Speech RecognizerSpeech AcousticsSpeech ProcessingSpeech InputSpeech PerceptionLinguistics
A Chinese speech recognizer with unlimited vocabulary is described. The system has two major components: the acoustic recognition component, which includes an HMM (hidden Markov model)-based phone recognizer, a NN (neural network)-based initial refiner, and a NN-based tone classifier; and the lexical and homonym processor, which is based on a knowledge database extracted from large amounts of texts. This real-time recognizer is implemented on a PC-386 enhanced by only one digital signal processing board on which a TMS-320c25 chip operates as the CPU. On average, it takes only 0.19 s to recognize a one-syllable word. The recognition accuracy for syllables, tones, and words is 92.5%, 99.6%, and 97.5%, respectively.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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