spectralOscillator
Spectral Oscillator with up to 32 harmonics. Depending on the jump, offset and range parameters, the oscillator creates different waveforms.
Inlets
bool32 active
frac32 pitch
frac32buffer freq
int32 start
int32 jump
int32 offset
int32 after
int32 expo
frac32.positive damp
Outlets
frac32buffer out
Parameters
frac32.s.map.pitch pitch
frac32.s.map FM
int32 harmonics
int32 start
int32 jump
int32 offset
int32 after
int32 expo
int32 range
frac32.u.map damp
int32_t _Phase[32];
int32_t _sine[32];
int32_t _harm[32];
int32_t _Ranged[32];
int32_t phase;
int32_t range;
int64_t sum;
int32_t Ranged;
int32_t FM;
int32_t jump;
int32_t offset;
int32_t after;
int32_t start;
int32_t expo;
uint32_t damp;
int32_t freq;if (inlet_active > 0) {
MTOF(param_pitch + inlet_pitch, freq)
range = param_range;
jump = inlet_jump + param_jump;
offset = param_offset + inlet_offset;
after = param_after + inlet_after;
start = inlet_start + param_start;
expo = inlet_expo + param_expo;
}if (inlet_active > 0) {
FM = ___SMMUL(inlet_freq << 3, param_FM << 3);
phase += freq + ___SMMUL(freq << 8, FM << 4);
damp = inlet_damp + param_damp;
sum = 0;
for (int i = 0; i <= param_harmonics; i++) {
_sine[i] = 0;
SINE2TINTERP(phase +
phase * (((i + start) * jump +
((i + start) >> after) * offset + i * i * expo) &
((1 << range) - 1)) +
(((i + start) * jump +
(((i + start) >> after) * offset + i * i * expo) &
1)
<< 30),
_sine[i])
sum += (_sine[i < param_harmonics ? i : param_harmonics] >> 5) /
(1 + ___SMMUL(i << 8, damp));
}
outlet_out = sum >> 2;
}