A Line Spectrum Frequency Pairs Representation for Spectral Envelop Quantization

  • Park, Youngho (Dept. of Information and Telecommunication. Soongsil University) ;
  • Lee, Won-Cheol (Dept. of Electronics Engineering. Soongsil University) ;
  • Bae, Myung-Jin (Dept. of Electronics Engineering. Soongsil University)
  • Published : 2000.09.01

Abstract

This paper introduces a new type of representation of the LSPs as a promising alternative used for transmitting the LPC parameters. Major contribution in this paper is that the vocal track information embedded on the spectral envelope can be represented in terms of the reduced number of LSF compared tn the conventional. Hence, it provides a possibility that LPC parameters could be quantized at a reduced bit rate without causing any major spectral distortion. The simulation result illustrates the capability of the proposed LSPs representation as an efficient quantization method via a proper rejection of the redundant pairs of pole and zero along the unit circle.

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