BPMctrl
BPM LFO controller outputs a pitch-offset corresponding to the BPM-ratio of the BPM-control to the BPM-base. Slow down your synthesizing sequence tapestyle!
Inlets
None
Outlets
frac32 pitch
int32 BPM
Parameters
int32 BPMbase
int32 BPMctrl
bool32.tgl link
Declaration
int32_t out;
int32_t LOG(int32_t in) {
Float_t f;
f.f = in;
int32_t r1 = ((f.parts.exponent & 0x7F) - 18) << 24;
int32_t r3 = logt[f.parts.mantissa >> 15] << 10;
out = r1 + r3;
}
int32_t FTOM(int32_t freq) {
int32_t ptch;
int32_t mid;
MTOFEXTENDED(0, mid);
LOG(mid);
mid = out;
int32_t to;
LOG(freq);
to = out;
return ptch = (to - mid >> 1) * 3;
};
Control Rate
int32_t pitch;
int32_t freq;
MTOFEXTENDED(0, freq)
float32_t ratio;
ratio = (float32_t)param_BPMctrl / param_BPMbase;
if (param_link > 0) {
freq = freq * ratio;
} else {
PExParameterChange(&parent->PExch[PARAM_INDEX_attr_legal_name_BPMbase],
param_BPMctrl, 0xFFFD);
}
outlet_pitch = FTOM(freq);
outlet_BPM = param_BPMctrl;