Title :
Immittance spectral pairs (ISP) for speech encoding
Author :
Bistritz, Yuval ; Peller, Shlomo
Author_Institution :
Dept. of Electr. Eng., Tel Aviv Univ., Israel
Abstract :
Immittance spectral pairs (ISPs) form a new set of parameters for representing the linear predictive coding (LPC) filter. For a filter of order n ISP consists of a gain and n-1 frequency parameters, instead of n frequency parameters as is the case for line spectrum pair (LSPs). In regarding LPC as a pseudo-model for the vocal tract, ISP can represent the immitance at the glottis without imposing, like LSP, artificial boundary conditions. In quantization experiments ISP has been found to compare favorably with LSP. A study of interframe differentiation coding for ISP and LSP demonstrates the respective performances of the two sets.<>
Keywords :
filtering and prediction theory; linear predictive coding; physiological models; speech coding; filter; immittance spectral pairs; interframe differentiation coding; linear predictive coding; performances; quantization; speech encoding; vocal tract pseudomodel;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1993. ICASSP-93., 1993 IEEE International Conference on
Conference_Location :
Minneapolis, MN, USA
Print_ISBN :
0-7803-7402-9
DOI :
10.1109/ICASSP.1993.319215
