sspmod_aut2lpc.c File Reference

LPC from autocorrelation coefficients. More...

Functions
void	spr_aut2lpc_levinson (float spr_autocorr[], float refl_coeff[], float LPC_filter[], int order, float LPC_filter_old[])
int	spr_aut2lpc_setup (SprSspInfo *Info, const char **descript, void *aux_info)
int	spr_aut2lpc_process (SprSspInfo *Info, const void *frame_in, void *frame_out)
void	spr_aut2lpc_free (SprSspInfo *Info)

Detailed Description

LPC from autocorrelation coefficients.

Convertion of autocorrelation coefficients to reflection coefficients and lpc filter coefficients (autoregressive coefficients) by the Levinson-Durbin algorithm

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[aut2lpc]
give <refl_coeff/LPC_filter> ...
Choose output vector(s) (and their order). Default LPC filter coefficients.

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See Also

ssp_master.c

Author

Weiye Ma (algorithm, levinson routine)

Jacques Duchateau (ssp routines)

Date

1 Sep 1991 and 4 Nov 1994