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# lsf2poly() - Signal Processing

### Syntax

### Example

### Output / Return Value

### Limitations

### Alternatives / See Also

### Reference

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 M × N with separate channels of line spectral frequencies in each column, the returned a matrix has the resulting prediction filter coefficients as its rows and is of size N × (M + 1).

a = lsf2poly(lsf)

Prediction Coefficients from Line Spectral FrequenciesOpen This Example Given a vector, lsf, of line spectral frequencies, determine the equivalent prediction filter coefficients. 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