A composite signal subspace speech classifier
Recently, a speech model inspired by signal subspace methods was proposed for a speech classifier. In using subspace information to characterize the speech signal, subspace trajectories in the form of the right singular vectors of the measurement matrices are obtained. Signal classification is there...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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ELSEVIER SCIENCE BV
2007
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| Subjects: | |
| Online Access: | http://shdl.mmu.edu.my/2983/ http://shdl.mmu.edu.my/2983/1/1013.pdf |
| _version_ | 1848790201943457792 |
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| author | TAN, A RAO, M DAYASAGAR, B |
| author_facet | TAN, A RAO, M DAYASAGAR, B |
| author_sort | TAN, A |
| building | MMU Institutional Repository |
| collection | Online Access |
| description | Recently, a speech model inspired by signal subspace methods was proposed for a speech classifier. In using subspace information to characterize the speech signal, subspace trajectories in the form of the right singular vectors of the measurement matrices are obtained. Signal classification is thereafter accomplished by a minimum-distance rule with noteworthy results. This paper extends the foregoing approach by organizing the vector trajectories into matrices. The matrices so obtained are the reduced-rank approximation of the sample correlation matrices. A new dissimilarity measure in the Frobenius norm is correspondingly proposed for the matrix trajectories. Simulation results of the proposed composite signal subspace classifier in an isolated digit speech recognition problem reveal an improved performance over its predecessor. Additionally, the results also show the proposed classifier retaining the white noise robustness of the original design. (c) 2007 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T18:08:51Z |
| format | Article |
| id | mmu-2983 |
| institution | Multimedia University |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T18:08:51Z |
| publishDate | 2007 |
| publisher | ELSEVIER SCIENCE BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | mmu-29832014-02-13T09:06:44Z http://shdl.mmu.edu.my/2983/ A composite signal subspace speech classifier TAN, A RAO, M DAYASAGAR, B T Technology (General) QA75.5-76.95 Electronic computers. Computer science Recently, a speech model inspired by signal subspace methods was proposed for a speech classifier. In using subspace information to characterize the speech signal, subspace trajectories in the form of the right singular vectors of the measurement matrices are obtained. Signal classification is thereafter accomplished by a minimum-distance rule with noteworthy results. This paper extends the foregoing approach by organizing the vector trajectories into matrices. The matrices so obtained are the reduced-rank approximation of the sample correlation matrices. A new dissimilarity measure in the Frobenius norm is correspondingly proposed for the matrix trajectories. Simulation results of the proposed composite signal subspace classifier in an isolated digit speech recognition problem reveal an improved performance over its predecessor. Additionally, the results also show the proposed classifier retaining the white noise robustness of the original design. (c) 2007 Elsevier B.V. All rights reserved. ELSEVIER SCIENCE BV 2007-11 Article NonPeerReviewed text en http://shdl.mmu.edu.my/2983/1/1013.pdf TAN, A and RAO, M and DAYASAGAR, B (2007) A composite signal subspace speech classifier. Signal Processing, 87 (11). pp. 2600-2606. ISSN 01651684 http://dx.doi.org/10.1016/j.sigpro.2007.04.009 doi:10.1016/j.sigpro.2007.04.009 doi:10.1016/j.sigpro.2007.04.009 |
| spellingShingle | T Technology (General) QA75.5-76.95 Electronic computers. Computer science TAN, A RAO, M DAYASAGAR, B A composite signal subspace speech classifier |
| title | A composite signal subspace speech classifier |
| title_full | A composite signal subspace speech classifier |
| title_fullStr | A composite signal subspace speech classifier |
| title_full_unstemmed | A composite signal subspace speech classifier |
| title_short | A composite signal subspace speech classifier |
| title_sort | composite signal subspace speech classifier |
| topic | T Technology (General) QA75.5-76.95 Electronic computers. Computer science |
| url | http://shdl.mmu.edu.my/2983/ http://shdl.mmu.edu.my/2983/ http://shdl.mmu.edu.my/2983/ http://shdl.mmu.edu.my/2983/1/1013.pdf |