2 Copyright (C) 2003-2008 Fons Adriaensen <fons@kokkinizita.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #include "ardour/mtdm.h"
40 for (i = 0, F = _freq; i < 5; i++, F++) {
48 MTDM::process (size_t len, float *ip, float *op)
51 float vip, vop, a, c, s;
58 for (i = 0, F = _freq; i < 5; i++, F++)
60 a = 2 * (float) M_PI * (F->p & 65535) / 65536.0;
71 for (i = 0, F = _freq; i < 5; i++, F++)
73 F->xf += 1e-3f * (F->xa - F->xf + 1e-20);
74 F->yf += 1e-3f * (F->ya - F->yf + 1e-20);
91 if (hypot (F->xf, F->yf) < 0.01) {
95 d = atan2 (F->yf, F->xf) / (2 * M_PI);
109 for (i = 0; i < 4; i++) {
111 p = atan2 (F->yf, F->xf) / (2 * M_PI) - d * F->f / f0;
117 k = (int)(floor (p + 0.5));