-
Notifications
You must be signed in to change notification settings - Fork 4
/
Copy pathf670l_NonIdealTransformer.hpp
289 lines (283 loc) · 13.2 KB
/
f670l_NonIdealTransformer.hpp
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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
//==============================================================================
/**
Wavechild 670
-------------
Wave digital filter based emulation of a famous 1950's tube stereo limiter
WDF++ based source code by Maxime Coorevits (Nord, France) in 2013
Some part are inspired by the Peter Raffensperger project: Wavechild670,
a command line with python WDF generator that produce C++ code of the circuit.
Major restructuration:
----------------------
* WDF++ based project (single WDF++.hpp file)
* full C++, zero-dependencies except JUCE (core API, AudioProcessor).
* JUCE Plugin wrapper processor (VST, AU ...)
* Photo-Realistic GUI
Reference:
----------
Toward a Wave Digital Filter Model of the Fairchild 670 Limiter,
Raffensperger, P. A., (2012).
Proc. of the 15th International Conference on Digital Audio Effects (DAFx-12),
York, UK, September 17-21, 2012.
Note:
-----
Fairchild (R) a registered trademark of Avid Technology, Inc.,
which is in no way associated or affiliated with the author.
**/
//==============================================================================
#ifndef __F670L_TRANSFORMER_HPP_362E05E5__
#define __F670L_TRANSFORMER_HPP_362E05E5__
//==============================================================================
#include "WDF++.hpp"
//==============================================================================
namespace Wavechild670 {
//==============================================================================
template <typename T>
class NonIdealTransformer : public WDF::TwoPort<T>
{
public:
NonIdealTransformer (T Fs,
T Nt,
T Lp_, T Rp_,
T Lm_, T Rc_,
T Ls_, T Rs_, T Cw_,
String name = String::empty)
: OnePort (input.R, name),
//----------------------------------------------------------------
// Components
//----------------------------------------------------------------
Lp (Lp_, Fs, "Lp"),
Lm (Lm_, Fs, "Lm"),
Ls (Ls_, Fs, "Ls"),
Cw (Cw_, Fs, "Cw"),
Rp (Rp_, "Rp"),
Rc (Rc_, "Rc"),
Rs (Rs_, "Rs"),
//----------------------------------------------------------------
transfo (Nt, "][")
//----------------------------------------------------------------
{}
//----------------------------------------------------------------------
virtual String label () const { "][" };
//----------------------------------------------------------------------
virtual void connect (OnePort<T>* parent, OnePort<T>* child)
{
root.connect (parent); wiring (child);
}
//----------------------------------------------------------------------
virtual void connectParent (OnePort<T>* parent)
{
root.connect (parent);
}
//----------------------------------------------------------------------
virtual void connectChild (OnePort<T>* child)
{
wiring (child);
}
//----------------------------------------------------------------------
virtual inline void computeChildB ()
{
}
//----------------------------------------------------------------------
virtual inline void computeParentB ()
{
}
//----------------------------------------------------------------------
virtual inline T reflected ()
{
return root.reflected ();
}
//----------------------------------------------------------------------
virtual inline void incident (T wave)
{
root.incident (wave);
}
//----------------------------------------------------------------------
virtual T R () { return root.R (); }
//----------------------------------------------------------------------
inline T Vout () { return Cw.voltage(); }
//----------------------------------------------------------------------
protected:
//----------------------------------------------------------------------
WDF::IdealTransformer<T> transfo;
//----------------------------------------------------------------------
WDF::Inductor<T> Lp, Lm, Ls;
WDF::Resistor<T> Rp, Rc, Rs;
WDF::Capacitor<T> Cw;
//----------------------------------------------------------------------
WDF::Serie<T> root;
//----------------------------------------------------------------------
WDF::Serie<T> serie_A;
WDF::Serie<T> serie_B;
WDF::Serie<T> serie_C;
WDF::Parallel<T> paral_A;
WDF::Parallel<T> paral_B;
WDF::Parallel<T> paral_C;
//----------------------------------------------------------------------
inline void wiring (OnePort<T>* child)
{
serie_A.connect (&Lp, &Rp);
serie_B.connect (&Rs, &Ls);
paral_A.connect (&Lm, &Rc);
//------------------------------------------------------------------
paral_B.connect (child, &Cw);
serie_C.connect (¶l_B, &serie_B);
//------------------------------------------------------------------
transfo.connectChild (&serie_C);
//------------------------------------------------------------------
paral_C.connect (&transfo, ¶l_A);
root.connect (&serie_A, ¶l_C);
}
//----------------------------------------------------------------------
};
//==============================================================================
template <typename T>
class InputCoupledTransformer : public WDF::OnePort<T>
{
public:
InputCoupledTransformer ()
: OnePort (1.0)
{}
//----------------------------------------------------------------------
virtual String label () const { "][" };
//----------------------------------------------------------------------
virtual inline T reflected ()
{
a = serie.reflected ();
b = -a; // short circuit rules
return transformer.Vout();
}
//----------------------------------------------------------------------
virtual inline void incident (T wave)
{
Vin.Vs = wave;
serie.incident (b);
}
//----------------------------------------------------------------------
protected:
WDF::VoltageSource<T> Vin;
WDF::Resistor<T> Rload;
WDF::Resistor<T> Rterm;
//----------------------------------------------------------------------
NonIdealTransformer<T> transformer;
//----------------------------------------------------------------------
WDF::Serie<T> serie;
WDF::Parallel<T> paral;
//----------------------------------------------------------------------
inline void wiring ()
{
transformer.connectChild (&Rload);
paral.connect (&transformer, &Rterm);
serie.connect (¶l, &Vin);
}
//----------------------------------------------------------------------
};
//==============================================================================
//
// SIGNAL AMPLIFIER TRANSFORMERS
// -----------------------------
//
// INPUT (Tx10) OUTPUT (Tx20)
// --------------------------------------------------------
// Rc 10 kOhms 10 kOhms
// Lm 35.7 H 35.7 H
// Rp 10 Ohms 5 Ohms
// Lp 4 mH 100 uH
// Rs 50 Ohms 50 Ohms
// Ls 1 mH 400 uH
// Cw 210 pF 1 pF
// --------------------------------------------------------
// Ratio 1:9 9:1
// --------------------------------------------------------
//
// T101 - Fairchild signal amp input (mono)
// T102 - Fairchild signal amp input (stereo)
// --------------------------------------------------------
// T201 - Fairchild signal amp output (mono)
// T202 - Fairchild signal amp output (stereo)
//
// --------------------------------------------------------
//
//==============================================================================
/**
template <typename T>
class Tx10 : public Transformer<T> { public:
Tx10 (T Fs, String name = String::empty) :
Transformer (Fs, 9.0, 600.0, 1360.0, 10e3, 35.7,
10.0, 4e-3, 50.0, 1e-3, 1000e3, 210e-12, name)
{} };
//==============================================================================
template <typename T>
class Tx20 : public Transformer<T> { public:
Tx20 (T Fs, String name = String::empty) :
Transformer (Fs, 1.0/9.0, 600.0, 1360.0, 10e3, 35.7,
5.0, 100e-6, 50.0, 400e-6, 1000e3, 1e-12, name)
{} };
*/
//==============================================================================
//
// SIDECHAIN AMPLIFIER TRANSFORMERS
// --------------------------------
//
// INPUT (T10x) OUTPUT (T20x)
// --------------------------------------------------------
// Rc 10 kOhms 10 kOhms
// Lm 35.7 H 35.7 H
// Rp 10 Ohms 5 Ohms
// Lp 4 mH 100 uH
// Rs 50 Ohms 50 Ohms
// Ls 1 mH 400 uH
// Cw 210 pF 1 pF
// --------------------------------------------------------
// Ratio 1:9 9:1
// --------------------------------------------------------
//
// T101 - Fairchild signal amp input (mono)
// T102 - Fairchild signal amp input (stereo)
// --------------------------------------------------------
// T201 - Fairchild signal amp output (mono)
// T202 - Fairchild signal amp output (stereo)
//
// --------------------------------------------------------
//
//==============================================================================
/**
template <typename T>
class Tx30 : public Transformer<T> { public:
Tx30 (T Fs, String name = String::empty) :
Transformer (Fs, 9.0, 600.0, 1360.0, 10e3, 35.7,
10.0, 4e-3, 50.0, 1e-3, 1000e3, 210e-12, name)
{} };
*/
//==============================================================================
} // namespace Wavechild670
//==============================================================================
#endif // __F670L_TRANSFORMER_HPP_362E05E5__
//==============================================================================
// TRANSFORMERS
//==============================================================================
// Fairchild 670 Signal amp input T101/201 600 ohms/50k ohms. Ratio 1+1:9+9.
//------------------------------------------------------------------------------
// Fairchild 670 Signal amp output T102/202 600 ohms/60k ct/ Ratio 9+9:1+1
//------------------------------------------------------------------------------
// Fairchild 670 Control amp input T103/203 600 ohms/170k ohms. Ratio 17+17:1+1
//------------------------------------------------------------------------------
// Fairchild 670 Control amp output T104/204 600 ohms/10k ct/ Ratio 4:1
// Feedback winding ratio 9.5:1
//------------------------------------------------------------------------------
// Fairchild 670 Bias supply Transformer. T301 50/60 Hz
// Secondary windings: 375-0-375 V at 200 mA,
// 6.3V CT at 5A,
// 5.0V at 2A
//------------------------------------------------------------------------------
// Fairchild 670 Mains Transformer. T302 50/60 Hz
// Secondary windings: 26.8V (for Selenium bridge rectifier)
// tapped at 24V (for Silicon bridge rectifier) at 200 mA.
//------------------------------------------------------------------------------
// Fairchild 670 Heater Transformer. T303/304 50/60 Hz
// Secondary windings: 6.3 V CT at 3 A
// 6.3 at 2.6A
//------------------------------------------------------------------------------
// Fairchild 670 Bias supply Choke. L301 71 Ohms 10H at 200 mA
//------------------------------------------------------------------------------
// Fairchild 670 Bias supply Choke. L302 85 Ohms 5H at 200 mA
//==============================================================================