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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tomar, V.S. Rose, R.C. |
| Copyright Year | 2013 |
| Description | Author affiliation: Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada (Tomar, V.S.; Rose, R.C.) |
| Abstract | This paper considers the application of discriminative manifold learning approaches in feature analysis for automatic speech recognition (ASR). The issue of manifold learning is addressed for feature space dimensionality reduction in domains involving noise corrupted speech. The locality preserving discriminant analysis (LPDA) approach to manifold learning is investigated. This class of techniques exploits the assumption that there is a structural relationship among data vectors which can be maintained by preserving the local relationships among the transformed data vectors. The paper presents a procedure for reducing the impact of varying acoustic conditions on manifold learning. Noise aware manifold learning (NAML) is described as an approach for exploiting estimated background characteristics to define the size of the local neighborhoods used for LPDA feature space transformations. It is shown that NAML significantly reduces the speech recognition WER in a noisy speech recognition task over LPDA, particularly at low signal-to-noise ratios. |
| Starting Page | 7087 |
| Ending Page | 7091 |
| File Size | 265241 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781479903566 |
| ISSN | 15206149 |
| DOI | 10.1109/ICASSP.2013.6639037 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-05-26 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Manifolds Speech Signal to noise ratio Vectors Kernel Hidden Markov models speech recognition Locality preserving discriminant analysis graph embedding dimensionality reduction |
| Content Type | Text |
| Resource Type | Article |
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