ref: 21ae07faf06daee0ced8e6f8f9b8ae8dba006b96
dir: /lpc10/prepro.c/
/*
* Revision 1.2 1996/08/20 20:40:51 jaf
* Removed all static local variables that were SAVE'd in the Fortran
* code, and put them in struct lpc10_encoder_state that is passed as an
* argument.
*
* Removed init function, since all initialization is now done in
* init_lpc10_encoder_state().
*
* Revision 1.1 1996/08/19 22:30:54 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 prepro_(real *speech, integer *length,
struct lpc10_encoder_state *st);
/* Table of constant values */
static integer c__1 = 1;
/* ********************************************************************* */
/* PREPRO Version 48 */
/*
* Revision 1.2 1996/08/20 20:40:51 jaf
* Removed all static local variables that were SAVE'd in the Fortran
* code, and put them in struct lpc10_encoder_state that is passed as an
* argument.
*
* Removed init function, since all initialization is now done in
* init_lpc10_encoder_state().
*
* Revision 1.1 1996/08/19 22:30:54 jaf
* Initial revision
* */
/* Revision 1.3 1996/03/14 23:22:56 jaf */
/* Added comments about when INITPREPRO should be used. */
/* Revision 1.2 1996/03/14 23:09:27 jaf */
/* Added an entry named INITPREPRO that initializes the local state of */
/* this subroutine, and those it calls (if any). */
/* Revision 1.1 1996/02/07 14:48:54 jaf */
/* Initial revision */
/* ********************************************************************* */
/* Pre-process input speech: */
/* Inputs: */
/* LENGTH - Number of SPEECH samples */
/* Input/Output: */
/* SPEECH(LENGTH) - Speech data. */
/* Indices 1 through LENGTH are read and modified. */
/* This subroutine has no local state maintained from one call to the */
/* next, but HP100 does. If you want to switch to using a new audio */
/* stream for this filter, or reinitialize its state for any other */
/* reason, call the ENTRY INITPREPRO. */
/* Subroutine */ int prepro_(real *speech, integer *length,
struct lpc10_encoder_state *st)
{
extern /* Subroutine */ int hp100_(real *, integer *, integer *, struct lpc10_encoder_state *);
/* Arguments */
/* High Pass Filter at 100 Hz */
/* Parameter adjustments */
if (speech) {
--speech;
}
/* Function Body */
hp100_(&speech[1], &c__1, length, st);
return 0;
} /* prepro_ */