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Speech recognition method using quantised LSP parameters in CELP-type coders

Speech recognition method using quantised LSP parameters in CELP-type coders

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  • Author(s): Seung HoChoi 1 ; Hong KookKim 2 ; Hwang SooLee 1 ; R.M. Gray 3
    • View affiliations
    • Affiliations: 1: Department of Information and Communication Engineering, Korea Advanced Institute of Science and Technology, Seoul, Korea
      2: Information Processing Sector, Human & Computer Interaction Lab., Samsung Advanced Institute of Technology, Yongin-City, Korea
      3: Department of Electrical Engineering, Information Systems Laboratory, Stanford University, Stanford, USA
  • Source: Volume 34, Issue 2, 22 January 1998, p. 156 – 157
    DOI:  10.1049/el:19980101 , Print ISSN 0013-5194, Online ISSN 1350-911X
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A low-complexity speech recognition method applicable to digital communication networks is proposed. A feature set suitable for speech recognition is obtained from quantised LSP parameters in CELP-type coders without reconstructing the speech signals. The authors present the effects of the speech coder on speaker-independent recognition performance, and show that the recognition accuracy of the proposed method is better than that of the recogniser using reconstructed speech signals.

Inspec keywords: speech recognition; speech coding; digital communication; linear predictive coding

Other keywords: recognition accuracy; low-complexity recognition method; speaker-independent recognition performance; digital communication networks; CELP-type coders; speech recognition; line spectral pair; quantised LSP parameters; feature set

Subjects: Speech and audio signal processing; Speech processing techniques; Speech recognition; Codes

References

    1. 1)
      • H.K. Kim , K.C. Kim , H.S. Lee . Enhanced distance measure for LSP-basedspeech recognition. Electron. Lett. , 16 , 1463 - 1465
    2. 2)
      • K.K. Paliwal , B.S. Atal . Efficient vector quantisation of LPC parameters at 24 bits/frame. IEEE Trans. SAP , 1 , 3 - 14
    3. 3)
      • Lilly, B.T., Paliwal, K.K.: `Effect of speech coders on speech recognition performance', Proc. ICSLP, 1996, p. 2344–2347.
    4. 4)
      • Euler, S., Zinke, J.: `The influence of speech coding algorithms on automatic speechrecognition', Proc. ICASSP, 1994, p. 621–624.
    5. 5)
      • `Speech option standard for wideband spread spectrum digital cellularsystem', TIA/EIA Interim Standard-96, April 1993.
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