getarspect.3

speech signal process tools

.\" Copyright (c) 1987 Entropic Speech, Inc.; All rights reserved
.\" @(#)getarspect.3	1.4 20 Oct 1987 ESI
.TH GET_ARSPECT 3\-ESPSsp 20 Oct 1987
.ds ]W "Entropic Speech, Inc.
.SH NAME
get_arspect \- compute lpc spectra from lpc filter coefficients
.SH SYNOPSIS
.ft B
get_arspect (c, order, res_power, samp_freq, y)
.br
int     order, samp_freq;
.br
float   c[], res_power, y[];
.SH DESCRIPTION
This routine computes the lpc power spectra from the lpc filter coefficients
and the residual power.
Input to this routine are 
.B
order
lpc filter coefficients
.B
c[1]
to
.B
c[order],
the residual power
.B
res_power
and sampling frequency
.B
samp_freq.
A 1024-point fft is used to obtain the lpc power spectra at 1024 points
on the unit circle.

.SH BUGS
None
.SH SEE ALSO
get_fft (3-ESPSsp).
.SH AUTHOR
Shankar Narayan