Title :
Adaptive LSP filter
Author :
Cheetham, B.M.G.
Author_Institution :
University of Liverpool, Department of Electrical Engineering & Electronics, Liverpool, UK
Abstract :
Line spectral pair (LSP) coefficients have been proposed as alternative representations of LPC parameters for low-bit-rate speech coding. The letter presents an LMS-type adaptive digital filter for directly calculating even-order LSP coefficients on a sequential basis. The technique is demonstrated for fourth-order adaption and may be generalised to higher orders.
Keywords :
digital filters; encoding; filtering and prediction theory; speech analysis and processing; LMS-type adaptive digital filter; directly calculating; even-order LSP coefficients; fourth-order adaption; low-bit-rate speech coding; sequential basis;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870064
