Linear Predictive Coding

LPC, Levinson-Durbin recursion

Extract linear predictive coefficients and reflection coefficients. Apply the Levinson-Durbin recursion.

Functions

`corrmtx`	Data matrix for autocorrelation matrix estimation
`levinson`	Levinson-Durbin recursion
`lpc`	Linear prediction filter coefficients
`rlevinson`	Reverse Levinson-Durbin recursion
`schurrc`	Compute reflection coefficients from autocorrelation sequence
`xcorr`	Cross-correlation
`xcov`	Cross-covariance

`ac2poly`	将自相关层层序e to prediction polynomial
`ac2rc`	将自相关层层序e to reflection coefficients
`is2rc`	Convert inverse sine parameters to reflection coefficients
`lar2rc`	Convert log area ratio parameters to reflection coefficients
`lsf2poly`	Convert line spectral frequencies to prediction filter coefficients
`poly2ac`	Convert prediction filter polynomial to autocorrelation sequence
`poly2lsf`	Convert prediction filter coefficients to line spectral frequencies
`poly2rc`	Convert prediction filter polynomial to reflection coefficients
`rc2ac`	Convert reflection coefficients to autocorrelation sequence
`rc2is`	Convert reflection coefficients to inverse sine parameters
`rc2lar`	Convert reflection coefficients to log area ratio parameters
`rc2poly`	Convert reflection coefficients to prediction filter polynomial

Compare two methods for determining the parameters of a linear filter: autoregressive modeling and linear prediction.

Estimate vowel formant frequencies using linear predictive coding.

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