frac32buffer input
frac32 freq
frac32buffer output
frac32.s.map.pitch freq
int32_t val;
val = 0;
int32_t f;
MTOF(param_freq + inlet_freq, f);
val = ___SMMLA((inlet_in - val) << 1, f, val);
outlet_out = val + (val - inlet_in);