A Russian Keyword Spotting System Based on Large Vocabulary Continuous Speech Recognition and Linguistic Knowledge

Large vocabulary continuous speech recognition using linguistic features and constraints

Automatic speech recognition (ASR) is a process of applying constraints, as encoded in the computer system (the recognizer), to the speech signal until ambiguity is satisfactorily resolved to the extent that only one sequence of words is hypothesized. Such constraints fall naturally into two categories. One deals with the the ordering of words (syntax) and organization of their meanings (semant...

Syllable-based large vocabulary continuous speech recognition

Most large vocabulary continuous speech recognition (LVCSR) systems in the past decade have used a context-dependent phone as the fundamental acoustic unit. In this paper, we present one of the first robust LVCSR systems that uses a syllable-level acoustic unit for LVCSR on telephone-bandwidth speech. This effort is motivated by the inherent limitations in phone-based approaches — namely the la...

Powerful syllabic fillers for general-task keyword-spotting and unlimited-vocabulary continuous-speech recognition

Since the number of vocabulary words is often very large in both general-task keyword spotting and unlimited-vocabulary continuous-speech recognition, we choose to represent, unlike other teams, vocabulary words and out-vocabulary words with the same set of subword HMMs. Secondly we replace the classical one-phoneme transcription of llers in the lexicon by a new, more powerful one-syllable tran...

Large Vocabulary Continuous Speech Recognition :

Large Vocabulary Continuous Speech Recognition

Large vocabulary speaker-independent speech recognition systems being capable of recognizing continuous speech based on hidden Markov models are today’s standard. This review introduces the fundamentals of speech and the underlying speech recognition problems. The three classical approaches, i.e., the acoustic-phonetic, the statistical (pattern) recognition and the artificial intelligence appro...