1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* sc4pd
PinkNoise, PinkNoise~
Copyright (c) 2004 Tim Blechmann.
This code is derived from:
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Based on:
PureData by Miller Puckette and others.
http://www.crca.ucsd.edu/~msp/software.html
FLEXT by Thomas Grill
http://www.parasitaere-kapazitaeten.net/ext
SuperCollider by James McCartney
http://www.audiosynth.com
Coded while listening to: Gottfried Michael Koenig: Klangfiguren II
*/
#include "sc4pd.hpp"
/* ------------------------ PinkNoise~ -------------------------------*/
class PinkNoise_ar:
public sc4pd_dsp
{
FLEXT_HEADER(PinkNoise_ar,sc4pd_dsp);
public:
PinkNoise_ar(int argc, t_atom *argv);
protected:
virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
void m_seed(int i)
{
rgen.init(i);
}
private:
uint32 m_dice[16];
int32 m_total;
RGen rgen;
FLEXT_CALLBACK_I(m_seed);
};
FLEXT_LIB_DSP_V("PinkNoise~",PinkNoise_ar);
PinkNoise_ar::PinkNoise_ar(int argc, t_atom *argv)
: m_total(0)
{
FLEXT_ADDMETHOD_(0,"seed",m_seed);
//parse arguments
AtomList Args(argc,argv);
rgen.init(timeseed());
for (int i=0; i<16; ++i)
{
uint32 newrand = rgen.trand() >> 13;
m_total += newrand;
m_dice[i] = newrand;
}
AddOutSignal();
}
void PinkNoise_ar::m_signal(int n, t_sample *const *in,
t_sample *const *out)
{
t_sample *nout = *out;
RGET;
uint32 total = m_total;
uint32 *dice = m_dice;
for (int i = 0; i!= n;++i)
{
uint32 counter = trand(s1,s2,s3); // Magnus Jonsson's suggestion.
uint32 newrand = counter >> 13;
int k = (CTZ(counter)) & 15;
uint32 prevrand = dice[k];
dice[k] = newrand;
total += (newrand - prevrand);
newrand = trand(s1,s2,s3) >> 13;
uint32 ifval = (total + newrand) | 0x40000000;
(*(nout)++) = ((*(float*)&ifval) - 3.0f);
}
RPUT;
}
/* ------------------------ PinkNoise ---------------------------------*/
class PinkNoise_kr:
public flext_base
{
FLEXT_HEADER(PinkNoise_kr,flext_base);
public:
PinkNoise_kr(int argc, t_atom *argv);
protected:
void m_perform();
void m_seed(int i)
{
rgen.init(i);
}
private:
uint32 m_dice[16];
int32 m_total;
RGen rgen;
FLEXT_CALLBACK(m_perform);
FLEXT_CALLBACK_I(m_seed);
};
FLEXT_LIB_V("PinkNoise",PinkNoise_kr);
PinkNoise_kr::PinkNoise_kr(int argc, t_atom *argv)
: m_total(0)
{
FLEXT_ADDBANG(0,m_perform);
FLEXT_ADDMETHOD_(0,"seed",m_seed);
//parse arguments
AtomList Args(argc,argv);
rgen.init(timeseed());
for (int i=0; i<16; ++i)
{
uint32 newrand = rgen.trand() >> 13;
m_total += newrand;
m_dice[i] = newrand;
}
AddOutFloat();
}
void PinkNoise_kr::m_perform()
{
uint32 counter = rgen.trand(); // Magnus Jonsson's suggestion.
uint32 newrand = counter >> 13;
int k = (CTZ(counter)) & 15;
uint32 prevrand = m_dice[k];
m_dice[k] = newrand;
m_total += (newrand - prevrand);
newrand = rgen.trand() >> 13;
uint32 ifval = (m_total + newrand) | 0x40000000;
ToOutFloat(0,((*(float*)&ifval) - 3.0f));
}
|
