rndSines
sine oscillator with randomisation of pitch and volume. for both modes, the pitch and volume are randomised at phase-restart, but: Mode1: values are only updated if a random value is higher then the update-control and phase restarts. Mode2: values are always updated at each phase restart, but the update-control sets the maximum change from the former random value, creating a more or less continuous random drift.
Inlets
frac32 rate
Outlets
frac32buffer.bipolar white noise
Parameters
int32.hradio mode
frac32.s.map.pitch rate
frac32.u.map Rmod
frac32.u.map volume
frac32.u.map Vmod
frac32.u.map update
uint32_t count;
int32_t rnd;
int32_t Rnd;
int32_t prev;
int64_t rate;
int32_t Rate;
int32_t val1a;
int32_t val2a;
int32_t val1b;
int32_t val2b;rnd = (int32_t)(GenerateRandomNumber());count += Rate;
if (param_mode == 0) {
if (count < prev) {
int32_t RND = (uint32_t)(GenerateRandomNumber()) >> 5;
if (param_update > RND) {
rnd = (int32_t)(GenerateRandomNumber()) >> 5;
Rnd = (int32_t)(GenerateRandomNumber()) >> 5;
}
}
}
if (param_mode == 1) {
if (count < prev) {
rnd = __SSAT(
rnd + (___SMMUL(param_update, (int32_t)(GenerateRandomNumber()))), 28);
Rnd = __SSAT(
Rnd + (___SMMUL(param_update, (int32_t)(GenerateRandomNumber()))), 28);
}
}
MTOFEXTENDED(
__SSAT(param_rate + inlet_rate + ___SMMUL(param_Rmod << 3, rnd << 2), 28),
rate)
Rate = rate >> 1;
int32_t sine;
SINE2TINTERP(count, sine)
outlet_out = ___SMMUL(sine, param_volume + ___SMMUL(param_Vmod << 3, Rnd << 2));
prev = count;