Recognition of selected spoken digits Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/s7526h120

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  • This thesis is concerned with the design of a speech recognition system to recognize digits 1, 2, 3 and 4. The system was designed by using the characteristics of the spectral patterns of amplitude vs. time at discrete frequencies. Data obtained for digits 0 to 9 are presented. The outputs of the recognition system are presented in a Binary Coded Decimal. A minimum system was evaluated in the laboratory to show feasibility of the technique. The cost of the major components of the system, not including labor work was estimated. The test shows that a 90-95% correct performance was obtained when individual digits were spoken repeatedly. Also there was an 80-85% correct performance when there were series of mixed digits spoken. The system was also tested by using different speakers, five American, three Thai and two Chinese students. None of them have been trained. The result obtained was a 50-60% correct performance. This paper indicates how improved performance can be obtained by using more frequency channels.
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  • File scanned at 300 ppi using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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  • description.provenance : Submitted by Lauren Kaysen (lkscannerosu@gmail.com) on 2014-03-13T22:54:23Z No. of bitstreams: 1 SimasathienPhojana1969.pdf: 663170 bytes, checksum: 0643fe65ca72fca5edbbcf6a54f8bd05 (MD5)
  • description.provenance : Approved for entry into archive by Katy Davis(kdscannerosu@gmail.com) on 2014-03-14T14:11:06Z (GMT) No. of bitstreams: 1 SimasathienPhojana1969.pdf: 663170 bytes, checksum: 0643fe65ca72fca5edbbcf6a54f8bd05 (MD5)
  • description.provenance : Approved for entry into archive by Katy Davis(kdscannerosu@gmail.com) on 2014-03-20T17:03:36Z (GMT) No. of bitstreams: 1 SimasathienPhojana1969.pdf: 663170 bytes, checksum: 0643fe65ca72fca5edbbcf6a54f8bd05 (MD5)
  • description.provenance : Made available in DSpace on 2014-03-20T17:03:36Z (GMT). No. of bitstreams: 1 SimasathienPhojana1969.pdf: 663170 bytes, checksum: 0643fe65ca72fca5edbbcf6a54f8bd05 (MD5) Previous issue date: 1968-12-20

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