/*

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

#define PI 3.14159265

#endif

extern void antialiasing(Sample *sp, int32 output_rate);