Signal Processing Toolbox

poly2lsf

Convert prediction filter coefficients to line spectral frequencies.

Syntax

lsf = poly2lsf(a)

Description

lsf = poly2lsf(a) returns a vector lsf of line spectral frequencies (also known as line spectrum pairs) from a vector a of prediction filter coefficients.

Examples

a = [1.0000    0.6149    0.9899    0.0000    0.0031   -0.0082];
lsf = poly2lsf(a)
lsf =
    0.7842
    1.5605
    1.8776
    1.8984
    2.3593

See Also
lsf2poly    Convert line spectral frequencies to prediction filter coefficients.

References

[1] Deller, J.R., J.G. Proakis, and J.H.L. Hansen, "Discrete-Time Processing of Speech Signals," Prentice-Hall, 1993.

[2] Rabiner, L.R., and R.W. Schafer, "Digital Processing of Speech Signals," Prentice-Hall, 1978.

poly2ac

poly2rc