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lpcfunc.cpp File Reference

Implementations of linear prediction functions, and conversion between common representations of linear predictive parameters. More...

#include <itpp/srccode/lpcfunc.h>
#include <itpp/base/stat.h>
#include <itpp/base/sigfun.h>
#include <iostream>

Go to the source code of this file.

Namespaces

namespace  itpp

Functions

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


Detailed Description

Implementations of linear prediction functions, and conversion between common representations of linear predictive parameters.

Author:
Thomas Eriksson
Date
2007-04-18 08:58:29 +0200 (Wed, 18 Apr 2007)
Revision
1013

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Copyright (C) 1995-2007 (see AUTHORS file for a list of contributors)

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Definition in file lpcfunc.cpp.

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