LPC-related Functions

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

Function Documentation

chirp()

ITPP_EXPORT vec itpp::chirp	(	const vec &	a,
		double	factor )

Returns a chirped version of the input vector.

References chirp().

Referenced by chirp().

sd() [1/2]

ITPP_EXPORT double itpp::sd	(	const vec &	In1,
		const vec &	In2 )

Spectral distortion between two vectors, in dB.

References sd().

Referenced by sd(), and sd().

sd() [2/2]

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.

References sd().

lerouxguegenrc()

ITPP_EXPORT vec itpp::lerouxguegenrc	(	const vec &	R,
		int	order )

Computes reflection coefficients from autocorrelation, using the Le-Roux-Guegen algorithm.

References lerouxguegenrc().

Referenced by lerouxguegenrc().

levinson()

ITPP_EXPORT vec itpp::levinson	(	const vec &	R2,
		int	order )

Levinson - Levinson-Durbin recursion.

References levinson().

Referenced by levinson().

autocorr()

ITPP_EXPORT vec itpp::autocorr	(	const vec &	x,
		int	order )

Computes the autocorrelation function.

References autocorr().

Referenced by autocorr().

lpc()

ITPP_EXPORT vec itpp::lpc	(	const vec &	x,
		int	order )

lpc - Linear Predictive Coefficients using autocorrelation method.

References lpc().

Referenced by lpc().

schurrc()

ITPP_EXPORT vec itpp::schurrc	(	const vec &	R,
		int	order )

schurrc - Schur algorithm.

References schurrc().

Referenced by schurrc().

ac2rc()

ITPP_EXPORT vec itpp::ac2rc

(

const vec &

ac

)

ac2rc - Autocorrelation sequence to reflection coefficients conversion.

References ac2rc().

Referenced by ac2rc().

ac2poly()

ITPP_EXPORT vec itpp::ac2poly

(

const vec &

ac

)

ac2poly - Autocorrelation sequence to prediction polynomial conversion.

References ac2poly().

Referenced by ac2poly().

is2rc()

ITPP_EXPORT vec itpp::is2rc

(

const vec &

is

)

is2rc - Inverse sine parameters to reflection coefficients conversion.

References is2rc().

Referenced by is2rc().

lar2rc()

ITPP_EXPORT vec itpp::lar2rc

(

const vec &

lar

)

lar2rc - Log area ratios to reflection coefficients conversion.

References lar2rc().

Referenced by lar2rc().

lsf2poly()

ITPP_EXPORT vec itpp::lsf2poly

(

const vec &

lsf

)

lsf2poly - Line spectral frequencies to prediction polynomial conversion.

References lsf2poly().

Referenced by lsf2poly().

poly2ac()

ITPP_EXPORT vec itpp::poly2ac

(

const vec &

poly

)

poly2ac - Prediction polynomial to autocorrelation sequence conversion.

References poly(), and poly2ac().

Referenced by poly2ac().

poly2lsf()

ITPP_EXPORT vec itpp::poly2lsf

(

const vec &

poly

)

poly2lsf - Prediction polynomial to line spectral frequencies conversion.

References poly(), and poly2lsf().

Referenced by poly2lsf().

poly2rc()

ITPP_EXPORT vec itpp::poly2rc

(

const vec &

poly

)

poly2rc - Prediction polynomial to reflection coefficients conversion.

References poly(), and poly2rc().

Referenced by poly2rc().

poly2cepstrum() [1/2]

ITPP_EXPORT vec itpp::poly2cepstrum

(

const vec &

a

)

poly2cepstrum - Prediction polynomial to cepstrum conversion.

References poly2cepstrum().

Referenced by poly2cepstrum(), and poly2cepstrum().

poly2cepstrum() [2/2]

ITPP_EXPORT vec itpp::poly2cepstrum	(	const vec &	a,
		int	num )

poly2cepstrum - Prediction polynomial to cepstrum conversion, to the specified order.

References poly2cepstrum().

cepstrum2poly()

ITPP_EXPORT vec itpp::cepstrum2poly

(

const vec &

c

)

cepstrum2poly - Cepstrum to prediction polynomial conversion.

References cepstrum2poly().

Referenced by cepstrum2poly().

rc2ac()

ITPP_EXPORT vec itpp::rc2ac

(

const vec &

rc

)

rc2ac - Reflection coefficients to autocorrelation sequence conversion.

References rc2ac().

Referenced by rc2ac().

rc2is()

ITPP_EXPORT vec itpp::rc2is

(

const vec &

rc

)

rc2is - Reflection coefficients to inverse sine parameters conversion.

References rc2is().

Referenced by rc2is().

rc2lar()

ITPP_EXPORT vec itpp::rc2lar

(

const vec &

rc

)

rc2lar - Reflection coefficients to log area ratios conversion.

References rc2lar().

Referenced by rc2lar().

rc2poly()

ITPP_EXPORT vec itpp::rc2poly

(

const vec &

rc

)

rc2poly - Reflection coefficients to prediction polynomial conversion.

References rc2poly().

Referenced by rc2poly().