mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2024-11-25 05:21:39 +00:00
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
|
/*
|
||
|
|
|
||
|
|
TiMidity -- Experimental MIDI to WAVE converter
|
||
|
|
Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
|
||
|
|
|
||
|
|
This program 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 2 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program 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 program; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
|
||
|
|
filter.h : written by Vincent Pagel ( pagel@loria.fr )
|
||
|
|
|
||
|
|
implements fir antialiasing filter : should help when setting sample
|
||
|
|
rates as low as 8Khz.
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Order of the FIR filter = 20 should be enough ! */
|
||
|
|
#define ORDER 20
|
||
|
|
#define ORDER2 ORDER/2
|
||
|
|
|
||
|
|
#ifndef PI
|
||
|
|
extern const float PI;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
extern void antialiasing(Sample *sp, int32_t output_rate);
|