waveformRandom
Random waveform-table generator. Creates random waves into the "waveformGenerator" module. Amount of waveforms created depends on the setting on the "waveformGenerator". Use "waveformTableCombinor" to combine tables.
Inlets
None
Outlets
None
Parameters
int32 damp
bool32.mom create
Attributes
objref table
combo size
Declaration
static const uint32_t LENGTHPOW = (attr_size);
static const uint32_t LENGTH = (1 << attr_size);
static const uint32_t LENGTHMASK = ((1 << attr_size) - 1);
int32_t *A;
int i;
int j;
int k;
int l;
int gtrig;
int32_t val;
Init
static int32_t _A[LENGTH] __attribute__((section(".sdram")));
A = &_A[0];
Control Rate
if ((param_create > 0) && !gtrig) {
gtrig = 1;
for (i = 0; i < attr_table.Waveforms; i++) {
uint32_t Time =
((((uint32_t)(GenerateRandomNumber()) & attr_table.LENGTHMASK)) >> 5);
int32_t count;
val = ___SMMUL((int32_t)(GenerateRandomNumber()), attr_table.maxLvl << 22);
for (j = 0; j < attr_table.LENGTH; j++) {
count += 1;
if (count >= Time) {
count = 0;
Time =
((((uint32_t)(GenerateRandomNumber()) & attr_table.LENGTHMASK)) >>
5);
val = ___SMMUL((int32_t)(GenerateRandomNumber()),
attr_table.maxLvl << 22);
}
attr_table.array[j + i * attr_table.LENGTH] =
(val - attr_table.array[((j - 1) & attr_table.LENGTHMASK) +
i * attr_table.LENGTH] >>
param_damp) +
attr_table
.array[((j - 1) & attr_table.LENGTHMASK) + i * attr_table.LENGTH];
}
}
for (i = 0; i < attr_table.Waveforms; i++) {
for (l = 0; l < attr_table.LENGTH; l++) {
A[l] = attr_table.array[l + i * attr_table.LENGTH];
}
for (j = 0; j < attr_table.LENGTH; j++) {
int32_t sum = 0;
for (k = 0; k < 16; k++) {
sum += A[((j - 8 + k) & attr_table.LENGTHMASK)] >> 4;
}
attr_table.array[j + i * attr_table.LENGTH] = sum;
}
}
attr_table.Do = 1;
} else if (param_create == 0) {
gtrig = 0;
}