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op25-legacy/imbe_vocoder/src/lib/dc_rmv.h

47 lines
1.5 KiB
C

/*
* Project 25 IMBE Encoder/Decoder Fixed-Point implementation
* Developed by Pavel Yazev E-mail: pyazev@gmail.com
* Version 1.0 (c) Copyright 2009
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* The software is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Boston, MA
* 02110-1301, USA.
*/
#ifndef _DC_RMV
#define _DC_RMV
//-----------------------------------------------------------------------------
// PURPOSE:
// High-pass filter to remove DC
//
//
// INPUT:
// *sigin - pointer to input signal buffer
// *sigout - pointer to output signal buffer
// *mem - pointer to filter's memory element
// len - number of input signal samples
//
// OUTPUT:
// None
//
// RETURN:
// Saved filter state in mem
//
//-----------------------------------------------------------------------------
void dc_rmv(Word16 *sigin, Word16 *sigout, Word32 *mem, Word16 len);
#endif