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Journal of Automation and Information Sciences
SJR: 0.232 SNIP: 0.464 CiteScore™: 0.27

ISSN Druckformat: 1064-2315
ISSN Online: 2163-9337

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Journal of Automation and Information Sciences

DOI: 10.1615/JAutomatInfScien.v51.i2.40
pages 30-40

Methods for Calculating and Coding the Parameters of Autoregressive Speech Model when Developing the Vocoder Based on Fixed Point Signal Process

Vasiliy Yu. Semenov
Scientific and Production Enterprise "DELTA-SPE", Kiev

ABSTRAKT

Consideration is given to calculating and coding the parameters of vocoders operating at speed of 1200 and 2400 bps. The efficient methods for calculating and coding the parameters of the autoregressive speech signal model such as line spectral frequencies and the pitch period are proposed. The works on computation optimization allowed a vocoder to be implemented in real time on the signal processor ADSP-2191.

REFERENZEN

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  2. McCree A.V., Barnwell T.P., A mixed excitation LPC vocoder model for low bit rate speech coding, IEEE Trans. Speech Audio Processing, 1995, 42, 242–249. DOI: 10.1109/89.397089

  3. Makhole J., Rusos S., Gish G., Vector quantization at speech coding, TIIER, 1985, No. 73, 19–61. DOI: 10.1109/PROC.1985.13340

  4. Kabal P., Ramachandran R.P., The computation of line spectral frequencies using Chebyshev polynomials, IEEE Trans. Acoust. Speech Signal Processing, 1980, 28, 562–574. DOI: 10.1109/ TASSP.1986.1164983

  5. Semenov V.Yu., Method for finding all roots of system of nonlinear algebraic equations based on Kravchik operator, Kibernetika i sistemnyi analiz, 2015, No. 5, 169–175, DOI:. DOI: 10.1007/s10559-015-9775-0

  6. Semenov V., Computation of immittance and line spectral frequencies based on interframe ordering property, Journal of Computers, 2007, 2, No. 7, 75–80.

  7. Vovk I.V., Semenov V.Yu., Automatic detection and recognition of dry rales based on analysis of their autocorrelation function, Akustychnyi visnyk, 2005, 8, No. 3, 17–23.

  8. Paliwal K.K., Atal B.S., Efficient vector quantization of LPC parameters at 24 bits/frame, IEEE Trans. Speech Audio Proces, 1993, 1, No. 1, 3–14. DOI: 10.1109/ICASSP.1991.150426


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