36 lines
773 B
C++
36 lines
773 B
C++
#pragma once
|
|
|
|
#include <math.h>
|
|
|
|
namespace trnr {
|
|
|
|
struct demo_noise {
|
|
double samplerate;
|
|
int counter;
|
|
};
|
|
|
|
inline void demo_nose_init(demo_noise& d, double samplerate)
|
|
{
|
|
d.samplerate = samplerate;
|
|
d.samplerate = 0;
|
|
}
|
|
|
|
inline void process_block(demo_noise& d, float** samples, int blocksize)
|
|
{
|
|
for (int s = 0; s < blocksize; s++) {
|
|
d.counter++;
|
|
|
|
if (d.counter == d.samplerate * 20) { d.counter = 0; }
|
|
if (d.counter > d.samplerate * 17) {
|
|
float r1 = static_cast<float>(rand()) / static_cast<float>(RAND_MAX);
|
|
float r2 = static_cast<float>(rand()) / static_cast<float>(RAND_MAX);
|
|
|
|
float noise = static_cast<float>(sqrt(-2.0 * log(r1)) * cos(2.0 * M_PI * r2));
|
|
|
|
samples[0][s] = noise / 10.0;
|
|
samples[1][s] = noise / 10.0;
|
|
}
|
|
}
|
|
}
|
|
} // namespace trnr
|