47 lines
1.5 KiB
C
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 _PE_LPF
|
|
#define _PE_LPF
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// PURPOSE:
|
|
// Low-pass filter for pitch estimator
|
|
//
|
|
//
|
|
// 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 pe_lpf(Word16 *sigin, Word16 *sigout, Word16 *mem, Word16 len);
|
|
|
|
|
|
#endif
|