echo fdbk mix
Audio delay with feedback and mix, fixed delay time
Inlets
frac32buffer input
frac32 mix
frac32 feedback
Outlets
frac32buffer output
Parameters
frac32.u.map mix
frac32.u.map feedback
Attributes
spinner delaylength
Declaration
uint32_t delaywindex;
uint32_t delayrindex;
int16_t delayline[attr_delaylength];
Init
int i;
for (i = 0; i < attr_delaylength; i++)
delayline[i] = 0;
delaywindex = 0;
delayrindex = 1;
Control Rate
int32_t _mix = param_mix + inlet_mix;
int32_t _fdbk = param_feedback + inlet_feedback;
Audio Rate
int32_t rd = delayline[delayrindex++];
delayline[delaywindex++] =
__SSAT((inlet_in >> 15) + ___SMMUL(rd << 5, _fdbk), 16);
if (delayrindex == attr_delaylength)
delayrindex = 0;
if (delaywindex == attr_delaylength)
delaywindex = 0;
outlet_out = (inlet_in >> 1) + (___SMMUL(rd << 16, _mix << 2));