Recent advances in LVCSR : A benchmark comparison of performances

Rahhal Errattahi, Asmaa El Hannani

Abstract


Large Vocabulary Continuous Speech Recognition (LVCSR), which is characterized by a high variability of the speech, is the most challenging task in automatic speech recognition (ASR). Believing that the evaluation of ASR systems on relevant and common speech corpora is one of the key factors that help accelerating research, we present, in this paper, a benchmark comparison of the performances of the current state-of-the-art LVCSR systems over different speech recognition tasks. Furthermore, we put objectively into evidence the best performing technologies and the best accuracy achieved so far in each task. The benchmarks have shown that the Deep Neural Networks and Convolutional Neural Networks have proven their efficiency on several LVCSR tasks by outperforming the traditional Hidden Markov Models and Guaussian Mixture Models. They have also shown that despite the satisfying performances in some LVCSR tasks, the problem of large-vocabulary speech recognition is far from being solved in some others, where more research efforts are still needed.

Keywords


large vocabulary continuous, speech recognition, automatic speech, recognition, word error rates, deep neural networks, hidden markov models, gaussian mixture models,

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DOI: http://doi.org/10.11591/ijece.v7i6.pp3358-3368
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ISSN 2088-8708, e-ISSN 2722-2578