frac32.bipolar frequency
frac32buffer.bipolar phase
frac32buffer.bipolar sine wave
frac32.u.map.freq freq
uint32_t Phase;
Phase = 0;
Phase += (param_freq + inlet_freq) << 4;
int32_t r;
int32_t p2 = Phase + (inlet_phase << 4);
SINE2TINTERP(p2, r)
outlet_wave = (r >> 4);