lsf2poly - Convert line spectral frequencies to prediction filter coefficients
Syntax
a = lsf2poly(lsf)
Description
a = lsf2poly(lsf) returns
a vector a containing the prediction filter coefficients
from the vector lsf of line spectral frequencies.
If lsf is a matrix of size MxN with separate channels
of line spectral frequencies in each column, the returned a matrix
has the resulting prediction filter coefficients in rows and is of
size Nx(M+1).
Examples
lsf = [0.7842 1.5605 1.8776 1.8984 2.3593];
a = lsf2poly(lsf)
a =
1.0000 0.6148 0.9899 0.0001 0.0031 -0.0081
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
ac2poly, poly2lsf, rc2poly
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