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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4532 d0543943-73ff-0310-b7d9-9358b9ac24b2

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This commit is contained in:
Michael Jerris
2007-03-11 10:14:11 +00:00
parent cd98f65d21
commit b662609898
53 changed files with 814 additions and 3886 deletions
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96
libs/codec/lpc10/src/dcbias.c Normal file
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/*
$Log: dcbias.c,v $
Revision 1.1 2004/05/04 11:16:42 csoutheren
Initial version
Revision 1.1 2000/06/05 04:45:12 robertj
Added LPC-10 2400bps codec
* Revision 1.1 1996/08/19 22:40:23 jaf
* Initial revision
*
*/
#ifdef P_R_O_T_O_T_Y_P_E_S
extern int dcbias_(integer *len, real *speech, real *sigout);
#endif
/* -- translated by f2c (version 19951025).
You must link the resulting object file with the libraries:
-lf2c -lm (in that order)
*/
#include "f2c.h"
/* ********************************************************************* */
/* DCBIAS Version 50 */
/* $Log: dcbias.c,v $
* Revision 1.1 2004/05/04 11:16:42 csoutheren
* Initial version
*
* Revision 1.1 2000/06/05 04:45:12 robertj
* Added LPC-10 2400bps codec
*
* Revision 1.1 1996/08/19 22:40:23 jaf
* Initial revision
*
*/
/* Revision 1.3 1996/03/18 21:19:22 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 16:44:53 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 14:44:21 jaf */
/* Initial revision */
/* ********************************************************************* */
/* Calculate and remove DC bias from buffer. */
/* Input: */
/* LEN - Length of speech buffers */
/* SPEECH - Input speech buffer */
/* Indices 1 through LEN read. */
/* Output: */
/* SIGOUT - Output speech buffer */
/* Indices 1 through LEN written */
/* This subroutine has no local state. */
/* Subroutine */ int dcbias_(integer *len, real *speech, real *sigout)
{
/* System generated locals */
integer i__1;
/* Local variables */
real bias;
integer i__;
/* Arguments */
/* Local variables that need not be saved */
/* Parameter adjustments */
--sigout;
--speech;
/* Function Body */
bias = 0.f;
i__1 = *len;
for (i__ = 1; i__ <= i__1; ++i__) {
bias += speech[i__];
}
bias /= *len;
i__1 = *len;
for (i__ = 1; i__ <= i__1; ++i__) {
sigout[i__] = speech[i__] - bias;
}
return 0;
} /* dcbias_ */