Method and arrangement of determining coefficients for linear pr

Details Method and arrangement of determining coefficients for linear pr Method and arrangement of determining coefficients for linear pr

1994-03-04

1995-12-12

MacDonald, Allen R.

G10L 900

Patent

active

054757908

ABSTRACT:
In order to reduce the number of update operations for determining LPC (viz., reflection) data from an incoming sampled data, a plurality of matrices representative of autocorrelation functions are set in memory. Subsequently, data representative of the upper triangular portions of the matrices (virtual upper triangular matrices) are extracted from the memory and arranged into an array. This array is then updated using a j-th reflection coefficient, after which the value of j is incremented and the updating is repeated until a predetermined number of updating is completed.

REFERENCES:
patent: 4544919 (1985-10-01), Gerson
patent: 4696040 (1987-09-01), Doddington et al.
patent: 5068597 (1991-11-01), Silverstein et al.
Rialan C P et al., "Fixed-Point error analysis of the lattice and the Schur algorithms for the auto correlation method of linear prediction", IEEE Trans. ASSP, vol. 37, No. 12, pp. 1950-1957, Dec. 1989.
Rialan C P et al., "Fast algorithms for computing QR and Cholesky factors of Toeplitz operators," IEEE Trans. ASSP, vol. 36, No. 11, pp. 1740-1748, Nov. 1988.

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