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Long Short-Term Memory networks for noise robust speech recognition

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In this paper we introduce a novel hybrid model architecture for speech recognition and investigate its noise robustness on the Aurora 2 database. Our model is composed of a bidirectional Long Short-Term Memory (BLSTM) recurrent neural net exploiting long-range context information for phoneme prediction and a Dynamic Bayesian Network (DBN) for decoding. The DBN is able to learn pronunciation variants as well as typical phoneme confusions of the BLSTM predictor in order to compensate signal disturbances. Unlike conventional Hidden Markov Model (HMM) systems, the proposed architecture is not based on Gaussian mixture modeling. Even without any feature enhancement, our BLSTM-DBN system outperforms a baseline HMM recognizer by up to 18%.

Original languageEnglish
Title of host publicationProceedings of the 11th Annual Conference of the International Speech Communication Association, INTERSPEECH 2010
PublisherInternational Speech Communication Association
Pages2966-2969
Number of pages4
StatePublished - 2010

Publication series

NameProceedings of the 11th Annual Conference of the International Speech Communication Association, INTERSPEECH 2010

Keywords

  • Dynamic Bayesian Networks
  • Long Short-Term Memory
  • Noise robustness
  • Recurrent neural networks
  • Speech recognition

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