-
Notifications
You must be signed in to change notification settings - Fork 2
/
SynthVoice.h
194 lines (186 loc) · 4.72 KB
/
SynthVoice.h
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
#ifndef SynthVoice_h
#define SynthVoice_h
#include "Num.h"
#include "Util.h"
#include "NumWaveTableOsc.hpp"
#include "ADSR.h"
#include "LowPass.h"
#include <Arduino.h>
using namespace Fixie;
class IRAM_ATTR SynthVoice {
public:
SynthVoice()
{
this->sampleRate = 8000;
this->modulation = 0;
this->pwm = Num(0.5);
this->fmod1 = Num(1.0);
this->fmod2 = Num(1.0);
this->fmod3 = Num(0.0);
this->ffreq = Num(1.0);
this->fq = Num(0.1);
lowpass.SetParameters(ffreq, fq);
}
SynthVoice(double sampleRate) {
this->sampleRate = sampleRate;
this->modulation = 0;
this->pwm = Num(0.5);
this->fmod1 = Num(1.0);
this->fmod2 = Num(1.0);
this->fmod3 = Num(0.0);
this->ffreq = Num(1.0);
this->fq = Num(0.1);
lowpass.SetParameters(ffreq, fq);
}
~SynthVoice(void) {
}
void MidiNoteOn(uint8_t note, uint8_t vel)
{
double f = pow(2.0,(note*1.0-69.0)/12.0)*440.0;
velocity = Num(vel/128.0);
freq1 = f;
freq2 = f;
osc[0].SetFrequency(freq1,sampleRate);
osc[1].SetFrequency(freq2,sampleRate);
adsr[0].Gate(1);
adsr[1].Gate(1);
}
void MidiNoteOff()
{
adsr[0].Gate(0);
adsr[1].Gate(0);
}
void AddOsc1WaveTable(int len, int8_t *waveTableIn)
{
osc[0].AddWaveTable(len,waveTableIn);
}
void AddOsc1SharedWaveTable(int len, int8_t *waveTableIn)
{
osc[0].AddSharedWaveTable(len, waveTableIn);
}
void AddOsc2WaveTable(int len, int8_t *waveTableIn)
{
osc[1].AddWaveTable(len,waveTableIn);
}
void AddOsc2SharedWaveTable(int len, int8_t *waveTableIn)
{
osc[1].AddSharedWaveTable(len, waveTableIn);
}
void SetOsc1ADSR(Num a, Num d, Num s, Num r)
{
adsr[0].SetADSR(a,d,s,r);
}
void SetOsc2ADSR(Num a, Num d, Num s, Num r)
{
adsr[1].SetADSR(a,d,s,r);
}
void SetFmod1(uint8_t fmod)
{
this->fmod1 = Num(fmod)/Num(64);
}
void SetFmod2(uint8_t fmod)
{
this->fmod2 = Num(fmod)/Num(64);
}
void SetFmod3(uint8_t fmod)
{
this->fmod3 = Num(fmod)/Num(64);
}
void MidiBend(uint16_t bend)
{
double factor = ((bend - 8192.0)/8192.0);
double mul = pow(2.0,(factor*12.0)/12.0);
double bendfreq1 = freq1*mul;
double bendfreq2 = freq2*mul;
osc[0].SetFrequency(bendfreq1,sampleRate);
osc[1].SetFrequency(bendfreq2,sampleRate);
}
void MidiMod(uint8_t newmod)
{
modulation = Num(newmod)/Num(127.0);
fmod1 = Num(1.0)-Num(modulation)/Num(127.0);
fmod2 = Num(1.0)-Num(modulation)/Num(127.0);
fmod3 = modulation;
}
void MidiPwm(uint8_t newmod)
{
pwm = Num(newmod)/Num(128);
if(newmod == 0)
{
osc[0].SetPhaseOffset(0);
osc[1].SetPhaseOffset(0);
}
else
{
osc[0].SetPhaseOffset(pwm);
osc[1].SetPhaseOffset(pwm);
}
}
int GetOsc1WaveTableCount()
{
return osc[0].GetWaveTableCount();
}
int GetOsc2WaveTableCount()
{
return osc[1].GetWaveTableCount();
}
void SetOsc1PhaseOffset(uint8_t newphase)
{
osc[0].SetPhaseOffset(newphase/127.0);
}
void SetOsc2PhaseOffset(uint8_t newphase)
{
osc[1].SetPhaseOffset(newphase/127.0);
}
void MidiOsc1Wave(uint8_t newwave)
{
osc[0].SetWaveTable(newwave);
wt1_idx = newwave;
}
void MidiOsc2Wave(uint8_t newwave)
{
osc[1].SetWaveTable(newwave);
wt2_idx = newwave;
}
void SetFilterParameters(uint8_t filter_freq, uint8_t filter_q)
{
lowpass.SetParameters(filter_freq/127.0,filter_q/127.0);
}
Num Process()
{
if(modulation==Num(0))
{
return (lowpass.Process(velocity*adsr[0].Process()*osc[0].Process()*fmod1+velocity*adsr[1].Process()*osc[1].Process()*fmod2))>>1;
}
else
{
return lowpass.Process((velocity*adsr[0].Process()*osc[0].Process()*fmod1) + (velocity*adsr[1].Process()*osc[1].Process()*fmod2) + (velocity*(adsr[0].Process()*osc[0].Process()*osc[1].Process()*fmod3)))>>3;
}
}
bool IsPlaying()
{
if(adsr[0].GetState()==ADSR::envState::env_idle && adsr[0].GetState()==ADSR::envState::env_idle)
{
return false;
}
return true;
}
protected:
NumWaveTableOsc osc[2];
ADSR adsr[2];
double sampleRate;
double freq1;
double freq2;
Num velocity;
Num modulation;
Num pwm;
Num fmod1;
Num fmod2;
Num fmod3;
Num ffreq;
Num fq;
LowPass lowpass;
uint8_t wt1_idx;
uint8_t wt2_idx;
};
#endif