LPC-related Functions
Source Coding Module

## Functions

ITPP_EXPORT vec | itpp::chirp (const vec &a, double factor)
| Returns a chirped version of the input vector.
ITPP_EXPORT double | itpp::sd (const vec &In1, const vec &In2)
| Spectral distortion between two vectors, in dB.
ITPP_EXPORT double | itpp::sd (const vec &In1, const vec &In2, double highestfreq)
| Spectral distortion between two vectors, in dB, up to highest frequency highestfreq.
ITPP_EXPORT vec | itpp::lerouxguegenrc (const vec &R, int order)
| Computes reflection coefficients from autocorrelation, using the Le-Roux-Guegen algorithm.
ITPP_EXPORT vec | itpp::levinson (const vec &R2, int order)
| Levinson - Levinson-Durbin recursion.
ITPP_EXPORT vec | itpp::autocorr (const vec &x, int order)
| Computes the autocorrelation function.
ITPP_EXPORT vec | itpp::lpc (const vec &x, int order)
| lpc - Linear Predictive Coefficients using autocorrelation method.
ITPP_EXPORT vec | itpp::schurrc (const vec &R, int order)
| schurrc - Schur algorithm.
ITPP_EXPORT vec | itpp::ac2rc (const vec &ac)
| ac2rc - Autocorrelation sequence to reflection coefficients conversion.
ITPP_EXPORT vec | itpp::ac2poly (const vec &ac)
| ac2poly - Autocorrelation sequence to prediction polynomial conversion.
ITPP_EXPORT vec | itpp::is2rc (const vec &is)
| is2rc - Inverse sine parameters to reflection coefficients conversion.
ITPP_EXPORT vec | itpp::lar2rc (const vec &lar)
| lar2rc - Log area ratios to reflection coefficients conversion.
ITPP_EXPORT vec | itpp::lsf2poly (const vec &lsf)
| lsf2poly - Line spectral frequencies to prediction polynomial conversion.
ITPP_EXPORT vec | itpp::poly2ac (const vec &poly)
| poly2ac - Prediction polynomial to autocorrelation sequence conversion.
ITPP_EXPORT vec | itpp::poly2lsf (const vec &poly)
| poly2lsf - Prediction polynomial to line spectral frequencies conversion.
ITPP_EXPORT vec | itpp::poly2rc (const vec &poly)
| poly2rc - Prediction polynomial to reflection coefficients conversion.
ITPP_EXPORT vec | itpp::poly2cepstrum (const vec &a)
| poly2cepstrum - Prediction polynomial to cepstrum conversion.
ITPP_EXPORT vec | itpp::poly2cepstrum (const vec &a, int num)
| poly2cepstrum - Prediction polynomial to cepstrum conversion, to the specified order.
ITPP_EXPORT vec | itpp::cepstrum2poly (const vec &c)
| cepstrum2poly - Cepstrum to prediction polynomial conversion.
ITPP_EXPORT vec | itpp::rc2ac (const vec &rc)
| rc2ac - Reflection coefficients to autocorrelation sequence conversion.
ITPP_EXPORT vec | itpp::rc2is (const vec &rc)
| rc2is - Reflection coefficients to inverse sine parameters conversion.
ITPP_EXPORT vec | itpp::rc2lar (const vec &rc)
| rc2lar - Reflection coefficients to log area ratios conversion.
ITPP_EXPORT vec | itpp::rc2poly (const vec &rc)
| rc2poly - Reflection coefficients to prediction polynomial conversion.

## Detailed Description

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