ap2
Allpass reverb section. This version uses SD-ram!!!! The factory version that uses SRAM, can maximum load 23 with 1000 samples delay. This version I loaded more than 100 with 1000 samples delay and the patch still compiled. Awesome. Besides that, it is identical to the factory allpass filter.
Inlets
frac32buffer in
frac32 mod input
Outlets
frac32buffer out
Parameters
frac32.s.map.ratio g
Attributes
spinner delay
Declaration
int32_t *d;
// int16_t d[attr_delay];
int dpos;
Init
static int32_t _array[attr_poly][attr_delay] __attribute__((section(".sdram")));
d = &_array[parent->polyIndex][0];
int i;
for (i = 0; i < attr_delay; i++)
d[i] = 0;
dpos = 0;
Control Rate
int32_t g2 = inlet_g + param_g << 4;
Audio Rate
int32_t dout = d[dpos] << 16;
int32_t din = ___SMMLA(g2, dout, inlet_in >> 1);
d[dpos++] = din >> 15;
outlet_out = ___SMMLS(g2, din << 1, dout >> 1) << 1;
if (dpos == attr_delay)
dpos = 0;