ref: 2db10552706cecbedd76af3987249e9bdb21d6ae
dir: /lpc10/dcbias.c/
/*
* Revision 1.1 1996/08/19 22:40:23 jaf
* Initial revision
*
*/
/* -- translated by f2c (version 19951025).
You must link the resulting object file with the libraries:
-lf2c -lm (in that order)
*/
#include "f2c.h"
extern int dcbias_(integer *len, real *speech, real *sigout);
/* ********************************************************************* */
/* DCBIAS Version 50 */
/*
* 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_ */