getburg.3

speech signal process tools

.\" Copyright (c) 1987 Entropic Speech, Inc.; All rights reserved
.\" @(#)getburg.3	1.7 03 Mar 1989 ESI
.TH GET_BURG 3\-ESPSsp 03 Mar 1989
.ds ]W "Entropic Speech, Inc.
.SH NAME
get_burg \- compute reflection coefficients using standard Burg and modified Bu
rg methods.
.SH SYNOPSIS
.ft B
get_burg (x, lnt, r, order, c, rc, pgain, method)
.br
float   x[], c[], rc[], *pgain;
.br
double  r[];
.br
int     order, lnt;
.br
char    method;
.SH DESCRIPTION
This routine computes the reflection coefficients and the lpc
filter coefficients directly from the data using Burg ( or modified
Burg) method.

.PP
get_burg function takes data of size
.B lnt
in array
.B x[]
as input and computes
.B order
reflection coefficients,
.B rc[1]
to
.B rc[order],
.B
order
lpc filter coefficients,
.B c[1]
to 
.B c[order],
lpc filter gain,
.B *pgain,
and signal energy (sum of squares),
.B r[0],
using Burg method (
.B method = 'b'
)
or modified Burg method (
.B method = 'm'
).
For more information on modified Burg method, refer to [2].
.SH BUGS
None
.SH SEE ALSO
.SH REFERENCES
[1] L. R. Rabiner and R. W. Schafer,
.I
Digital Processing of Speech Signals.
Prentice-Hall, NJ. 1978.
.br
[2] ETM-S-86-49:ssn,
.I
Spectrum Analysis of periodic data,
by Shankar Narayan.
.SH AUTHOR
Shankar Narayan