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 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

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.

See Also

lsf2poly

poly2ac

poly2rc