mirror of
https://github.com/asterisk/asterisk.git
synced 2025-10-26 06:26:41 +00:00
2bd936105e
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@612 65c4cc65-6c06-0410-ace0-fbb531ad65f3
158 lines
4.9 KiB
C
Executable File
158 lines
4.9 KiB
C
Executable File
/*
|
|
|
|
$Log$
|
|
Revision 1.14 2003/02/12 13:59:15 matteo
|
|
mer feb 12 14:56:57 CET 2003
|
|
|
|
Revision 1.1.1.1 2003/02/12 13:59:15 matteo
|
|
mer feb 12 14:56:57 CET 2003
|
|
|
|
Revision 1.2 2000/01/05 08:20:39 markster
|
|
Some OSS fixes and a few lpc changes to make it actually work
|
|
|
|
* Revision 1.1 1996/08/19 22:31:25 jaf
|
|
* Initial revision
|
|
*
|
|
|
|
*/
|
|
|
|
#ifdef P_R_O_T_O_T_Y_P_E_S
|
|
extern int mload_(integer *order, integer *awins, integer *awinf, real *speech, real *phi, real *psi);
|
|
#endif
|
|
|
|
/* -- translated by f2c (version 19951025).
|
|
You must link the resulting object file with the libraries:
|
|
-lf2c -lm (in that order)
|
|
*/
|
|
|
|
#include "f2c.h"
|
|
|
|
/* ***************************************************************** */
|
|
|
|
/* MLOAD Version 48 */
|
|
|
|
/* $Log$
|
|
* Revision 1.14 2003/02/12 13:59:15 matteo
|
|
* mer feb 12 14:56:57 CET 2003
|
|
*
|
|
/* Revision 1.1.1.1 2003/02/12 13:59:15 matteo
|
|
/* mer feb 12 14:56:57 CET 2003
|
|
/*
|
|
/* Revision 1.2 2000/01/05 08:20:39 markster
|
|
/* Some OSS fixes and a few lpc changes to make it actually work
|
|
/*
|
|
* Revision 1.1 1996/08/19 22:31:25 jaf
|
|
* Initial revision
|
|
* */
|
|
/* Revision 1.5 1996/03/27 23:59:51 jaf */
|
|
/* Added some more accurate comments about which indices of the argument */
|
|
/* array SPEECH are read. I thought that this might be the cause of a */
|
|
/* problem I've been having, but it isn't. */
|
|
|
|
/* Revision 1.4 1996/03/26 19:16:53 jaf */
|
|
/* Commented out the code at the end that copied the lower triangular */
|
|
/* half of PHI into the upper triangular half (making the resulting */
|
|
/* matrix symmetric). The upper triangular half was never used by later */
|
|
/* code in subroutine ANALYS. */
|
|
|
|
/* Revision 1.3 1996/03/18 21:16:00 jaf */
|
|
/* Just added a few comments about which array indices of the arguments */
|
|
/* are used, and mentioning that this subroutine has no local state. */
|
|
|
|
/* Revision 1.2 1996/03/13 16:47:41 jaf */
|
|
/* Comments added explaining that none of the local variables of this */
|
|
/* subroutine need to be saved from one invocation to the next. */
|
|
|
|
/* Revision 1.1 1996/02/07 14:48:01 jaf */
|
|
/* Initial revision */
|
|
|
|
|
|
/* ***************************************************************** */
|
|
|
|
/* Load a covariance matrix. */
|
|
|
|
/* Input: */
|
|
/* ORDER - Analysis order */
|
|
/* AWINS - Analysis window start */
|
|
/* AWINF - Analysis window finish */
|
|
/* SPEECH(AWINF) - Speech buffer */
|
|
/* Indices MIN(AWINS, AWINF-(ORDER-1)) through */
|
|
/* MAX(AWINF, AWINS+(ORDER-1)) read. */
|
|
/* As long as (AWINF-AWINS) .GE. (ORDER-1), */
|
|
/* this is just indices AWINS through AWINF. */
|
|
/* Output: */
|
|
/* PHI(ORDER,ORDER) - Covariance matrix */
|
|
/* Lower triangular half and diagonal written, and read.*/
|
|
/* Upper triangular half untouched. */
|
|
/* PSI(ORDER) - Prediction vector */
|
|
/* Indices 1 through ORDER written, */
|
|
/* and most are read after that. */
|
|
|
|
/* This subroutine has no local state. */
|
|
|
|
/* Subroutine */ int mload_(integer *order, integer *awins, integer *awinf,
|
|
real *speech, real *phi, real *psi)
|
|
{
|
|
/* System generated locals */
|
|
integer phi_dim1, phi_offset, i__1, i__2;
|
|
|
|
/* Local variables */
|
|
integer c__, i__, r__, start;
|
|
|
|
/* Arguments */
|
|
/* Local variables that need not be saved */
|
|
/* Load first column of triangular covariance matrix PHI */
|
|
/* Parameter adjustments */
|
|
--psi;
|
|
phi_dim1 = *order;
|
|
phi_offset = phi_dim1 + 1;
|
|
phi -= phi_offset;
|
|
--speech;
|
|
|
|
/* Function Body */
|
|
start = *awins + *order;
|
|
i__1 = *order;
|
|
for (r__ = 1; r__ <= i__1; ++r__) {
|
|
phi[r__ + phi_dim1] = 0.f;
|
|
i__2 = *awinf;
|
|
for (i__ = start; i__ <= i__2; ++i__) {
|
|
phi[r__ + phi_dim1] += speech[i__ - 1] * speech[i__ - r__];
|
|
}
|
|
}
|
|
/* Load last element of vector PSI */
|
|
psi[*order] = 0.f;
|
|
i__1 = *awinf;
|
|
for (i__ = start; i__ <= i__1; ++i__) {
|
|
psi[*order] += speech[i__] * speech[i__ - *order];
|
|
}
|
|
/* End correct to get additional columns of PHI */
|
|
i__1 = *order;
|
|
for (r__ = 2; r__ <= i__1; ++r__) {
|
|
i__2 = r__;
|
|
for (c__ = 2; c__ <= i__2; ++c__) {
|
|
phi[r__ + c__ * phi_dim1] = phi[r__ - 1 + (c__ - 1) * phi_dim1] -
|
|
speech[*awinf + 1 - r__] * speech[*awinf + 1 - c__] +
|
|
speech[start - r__] * speech[start - c__];
|
|
}
|
|
}
|
|
/* End correct to get additional elements of PSI */
|
|
i__1 = *order - 1;
|
|
for (c__ = 1; c__ <= i__1; ++c__) {
|
|
psi[c__] = phi[c__ + 1 + phi_dim1] - speech[start - 1] * speech[start
|
|
- 1 - c__] + speech[*awinf] * speech[*awinf - c__];
|
|
}
|
|
/* Copy lower triangular section into upper (why bother?) */
|
|
/* I'm commenting this out, since the upper triangular half of PHI
|
|
*/
|
|
/* is never used by later code, unless a sufficiently high level of
|
|
*/
|
|
/* tracing is turned on. */
|
|
/* DO R = 1,ORDER */
|
|
/* DO C = 1,R-1 */
|
|
/* PHI(C,R) = PHI(R,C) */
|
|
/* END DO */
|
|
/* END DO */
|
|
return 0;
|
|
} /* mload_ */
|
|
|