FUJI_Chorus/test.cpp at master · BeyondCloud/FUJI_Chorus · GitHub

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#include <stdio.h>

#include <math.h>

// g++ -Wall -O3 -std=c++11 test.cpp -shared -m64 -o chorus.dll

#define PI 3.1416

const double fs = 44100;

const double delay_sec = 0.013;

const double depth =0.003;

const double delay_samples = delay_sec * fs;

const double depth_samples = depth * fs;

const double mod_rate = 3.2;

const double mod_arg = 2*3.1416*mod_rate/fs;

const double feedback = 0.3;

const int buf_len = delay_samples+depth_samples;

double prev_i = 0.0;

extern "C" void chorus(const double *x,double *out,double *delay_buf,int len)

{

// printf("%d %lf",len,prev_i);

for(int i=0;i<len;i++)

{

double modulated_sample = depth_samples*sin(mod_arg*i+prev_i);

modulated_sample += (delay_samples-1);

double interp1 =delay_buf[(int)floor(modulated_sample)];

out[i] = interp1;

double new_sample= x[i]+interp1*feedback;

//roll 1 element

for (int j = buf_len-1; j >= 1; j--)

delay_buf[j]=delay_buf[j-1];

delay_buf[0] = new_sample;

}

prev_i = fmod((mod_arg*(len-1)+prev_i),(PI*2));

// modulated_sample = depth_samples*math.sin(mod_arg*(i)+prev_i)

// modulated_sample += (delay_samples-1)

// # interpolate

// interp1 =delay_buf[math.floor(modulated_sample)];

// # interp2 =delay_buf[math.ceil(modulated_sample)];

// # query_sample = math.modf(modulated_sample)[0] #get decimal part

// delay_chnl[i] = interp1

// new_sample= x[i]+delay_chnl[i]*feedback;

// delay_buf[-1] = new_sample

// delay_buf = np.roll(delay_buf,1)

}

extern "C" void test(double *x)

{

x[0] = 1;

}

FUJI_Chorus/test.cpp at master · BeyondCloud/FUJI_Chorus · GitHub

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