sample and hold
Sample and hold module. Frequency adjust hold time (the higher the frequency, the finer the grain), while scaling routes the current sample amplitude to the hold time (unusual for a bitcrusher, but might add some character). Linear frequency scaling. The object is based on Johannes dist/samplehold cheap and osc/sine lin
Inlets
frac32buffer in
frac32 freq
frac32 scaling
Outlets
frac32buffer.bipolar output
Parameters
frac32.s.map scaling
frac32.u.map freq
Declaration
int32_t phase;
int32_t phase_prev;
int32_t scaling;
uint32_t additional;
int32_t hold;
Init
phase = 0;
phase_prev = 0;
scaling = 0;
additional = 0;
hold = 0;
Control Rate
scaling = param_scaling + inlet_scaling << 4;
Audio Rate
phase += (param_freq + inlet_freq + additional) << 1;
if ((phase < 0) && (phase_prev > 0)) {
hold = inlet_in >> 1;
phase = 0;
additional = ___SMMUL(hold > 0 ? hold : -hold, scaling);
}
outlet_out = hold;
phase_prev = phase;