trnr/tlib
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

convert demo noise generator to procedural approach, optimize a bit

Browse Source
This commit is contained in:
Chris
2025-11-05 16:44:58 +01:00
parent 1f818f4271
commit 82e752f7b8
1 changed files with 29 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
util/demo_noise.h
View File

@@ -1,38 +1,35 @@
#pragma once #pragma once
#define _USE_MATH_DEFINES
#include <math.h> #include <math.h>
#include <cstdlib>
namespace trnr { namespace trnr {
template <typename t_sample>
class demo_noise { struct demo_noise {
public: double samplerate;
void set_samplerate(double _samplerate) { int counter;
samplerate = _samplerate; };
inline void demo_nose_init(demo_noise& d, double samplerate)
{
d.samplerate = samplerate;
d.samplerate = 0;
} }
void process_block(t_sample** samples, long sample_frames) { inline void process_block(demo_noise& d, float** samples, int blocksize)
{
for (int s = 0; s < blocksize; s++) {
d.counter++;
for (int s = 0; s < sample_frames; s++) { if (d.counter == d.samplerate * 20) { d.counter = 0; }
demo_counter++; 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);
if (demo_counter == samplerate * 20) { float noise = static_cast<float>(sqrt(-2.0 * log(r1)) * cos(2.0 * M_PI * r2));
demo_counter = 0;
}
if (demo_counter > samplerate * 17) {
t_sample r1 = static_cast<t_sample>(rand()) / static_cast<t_sample>(RAND_MAX);
t_sample r2 = static_cast<t_sample>(rand()) / static_cast<t_sample>(RAND_MAX);
t_sample noise = static_cast<t_sample>(sqrt(-2.0 * log(r1)) * cos(2.0 * M_PI * r2));
samples[0][s] = noise / 10.0; samples[0][s] = noise / 10.0;
samples[1][s] = noise / 10.0; samples[1][s] = noise / 10.0;
} }
} }
} }
} // namespace trnr
private:
double samplerate = 44100;
int demo_counter = 0;
};
}