mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-15 22:01:19 -06:00
328 lines
11 KiB
C++
Executable file
328 lines
11 KiB
C++
Executable file
/* ========================================
|
|
* DeEss - DeEss.h
|
|
* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
|
|
* ======================================== */
|
|
|
|
#ifndef __DeEss_H
|
|
#include "DeEss.h"
|
|
#endif
|
|
|
|
void DeEss::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
|
|
{
|
|
float* in1 = inputs[0];
|
|
float* in2 = inputs[1];
|
|
float* out1 = outputs[0];
|
|
float* out2 = outputs[1];
|
|
|
|
double overallscale = 1.0;
|
|
overallscale /= 44100.0;
|
|
overallscale *= getSampleRate();
|
|
|
|
double intensity = pow(A,5)*(8192/overallscale);
|
|
double maxdess = 1.0 / pow(10.0,((B-1.0)*48.0)/20);
|
|
double iirAmount = pow(C,2)/overallscale;
|
|
double offset;
|
|
double sense;
|
|
double recovery;
|
|
double attackspeed;
|
|
|
|
while (--sampleFrames >= 0)
|
|
{
|
|
double inputSampleL = *in1;
|
|
double inputSampleR = *in2;
|
|
|
|
static int noisesourceL = 0;
|
|
static int noisesourceR = 850010;
|
|
int residue;
|
|
double applyresidue;
|
|
|
|
noisesourceL = noisesourceL % 1700021; noisesourceL++;
|
|
residue = noisesourceL * noisesourceL;
|
|
residue = residue % 170003; residue *= residue;
|
|
residue = residue % 17011; residue *= residue;
|
|
residue = residue % 1709; residue *= residue;
|
|
residue = residue % 173; residue *= residue;
|
|
residue = residue % 17;
|
|
applyresidue = residue;
|
|
applyresidue *= 0.00000001;
|
|
applyresidue *= 0.00000001;
|
|
inputSampleL += applyresidue;
|
|
if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
|
|
inputSampleL -= applyresidue;
|
|
}
|
|
|
|
noisesourceR = noisesourceR % 1700021; noisesourceR++;
|
|
residue = noisesourceR * noisesourceR;
|
|
residue = residue % 170003; residue *= residue;
|
|
residue = residue % 17011; residue *= residue;
|
|
residue = residue % 1709; residue *= residue;
|
|
residue = residue % 173; residue *= residue;
|
|
residue = residue % 17;
|
|
applyresidue = residue;
|
|
applyresidue *= 0.00000001;
|
|
applyresidue *= 0.00000001;
|
|
inputSampleR += applyresidue;
|
|
if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
|
|
inputSampleR -= applyresidue;
|
|
}
|
|
//for live air, we always apply the dither noise. Then, if our result is
|
|
//effectively digital black, we'll subtract it aDeEss. We want a 'air' hiss
|
|
|
|
s3L = s2L;
|
|
s2L = s1L;
|
|
s1L = inputSampleL;
|
|
m1L = (s1L-s2L)*((s1L-s2L)/1.3);
|
|
m2L = (s2L-s3L)*((s1L-s2L)/1.3);
|
|
sense = fabs((m1L-m2L)*((m1L-m2L)/1.3));
|
|
//this will be 0 for smooth, high for SSS
|
|
attackspeed = 7.0+(sense*1024);
|
|
//this does not vary with intensity, but it does react to onset transients
|
|
|
|
sense = 1.0+(intensity*intensity*sense);
|
|
if (sense > intensity) {sense = intensity;}
|
|
//this will be 1 for smooth, 'intensity' for SSS
|
|
recovery = 1.0+(0.01/sense);
|
|
//this will be 1.1 for smooth, 1.0000000...1 for SSS
|
|
|
|
offset = 1.0-fabs(inputSampleL);
|
|
|
|
if (flip) {
|
|
iirSampleAL = (iirSampleAL * (1 - (offset * iirAmount))) + (inputSampleL * (offset * iirAmount));
|
|
if (ratioAL < sense)
|
|
{ratioAL = ((ratioAL*attackspeed)+sense)/(attackspeed+1.0);}
|
|
else
|
|
{ratioAL = 1.0+((ratioAL-1.0)/recovery);}
|
|
//returny to 1/1 code
|
|
if (ratioAL > maxdess){ratioAL = maxdess;}
|
|
inputSampleL = iirSampleAL+((inputSampleL-iirSampleAL)/ratioAL);
|
|
}
|
|
else {
|
|
iirSampleBL = (iirSampleBL * (1 - (offset * iirAmount))) + (inputSampleL * (offset * iirAmount));
|
|
if (ratioBL < sense)
|
|
{ratioBL = ((ratioBL*attackspeed)+sense)/(attackspeed+1.0);}
|
|
else
|
|
{ratioBL = 1.0+((ratioBL-1.0)/recovery);}
|
|
//returny to 1/1 code
|
|
if (ratioBL > maxdess){ratioBL = maxdess;}
|
|
inputSampleL = iirSampleBL+((inputSampleL-iirSampleBL)/ratioBL);
|
|
} //have the ratio chase Sense
|
|
|
|
s3R = s2R;
|
|
s2R = s1R;
|
|
s1R = inputSampleR;
|
|
m1R = (s1R-s2R)*((s1R-s2R)/1.3);
|
|
m2R = (s2R-s3R)*((s1R-s2R)/1.3);
|
|
sense = fabs((m1R-m2R)*((m1R-m2R)/1.3));
|
|
//this will be 0 for smooth, high for SSS
|
|
attackspeed = 7.0+(sense*1024);
|
|
//this does not vary with intensity, but it does react to onset transients
|
|
|
|
sense = 1.0+(intensity*intensity*sense);
|
|
if (sense > intensity) {sense = intensity;}
|
|
//this will be 1 for smooth, 'intensity' for SSS
|
|
recovery = 1.0+(0.01/sense);
|
|
//this will be 1.1 for smooth, 1.0000000...1 for SSS
|
|
|
|
offset = 1.0-fabs(inputSampleR);
|
|
|
|
if (flip) {
|
|
iirSampleAR = (iirSampleAR * (1 - (offset * iirAmount))) + (inputSampleR * (offset * iirAmount));
|
|
if (ratioAR < sense)
|
|
{ratioAR = ((ratioAR*attackspeed)+sense)/(attackspeed+1.0);}
|
|
else
|
|
{ratioAR = 1.0+((ratioAR-1.0)/recovery);}
|
|
//returny to 1/1 code
|
|
if (ratioAR > maxdess){ratioAR = maxdess;}
|
|
inputSampleR = iirSampleAR+((inputSampleR-iirSampleAR)/ratioAR);
|
|
}
|
|
else {
|
|
iirSampleBR = (iirSampleBR * (1 - (offset * iirAmount))) + (inputSampleR * (offset * iirAmount));
|
|
if (ratioBR < sense)
|
|
{ratioBR = ((ratioBR*attackspeed)+sense)/(attackspeed+1.0);}
|
|
else
|
|
{ratioBR = 1.0+((ratioBR-1.0)/recovery);}
|
|
//returny to 1/1 code
|
|
if (ratioBR > maxdess){ratioBR = maxdess;}
|
|
inputSampleR = iirSampleBR+((inputSampleR-iirSampleBR)/ratioBR);
|
|
} //have the ratio chase Sense
|
|
|
|
flip = !flip;
|
|
|
|
//begin 32 bit stereo floating point dither
|
|
int expon; frexpf((float)inputSampleL, &expon);
|
|
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
|
|
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
|
|
frexpf((float)inputSampleR, &expon);
|
|
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
|
|
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
|
|
//end 32 bit stereo floating point dither
|
|
|
|
*out1 = inputSampleL;
|
|
*out2 = inputSampleR;
|
|
|
|
*in1++;
|
|
*in2++;
|
|
*out1++;
|
|
*out2++;
|
|
}
|
|
}
|
|
|
|
void DeEss::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
|
|
{
|
|
double* in1 = inputs[0];
|
|
double* in2 = inputs[1];
|
|
double* out1 = outputs[0];
|
|
double* out2 = outputs[1];
|
|
|
|
double overallscale = 1.0;
|
|
overallscale /= 44100.0;
|
|
overallscale *= getSampleRate();
|
|
|
|
double intensity = pow(A,5)*(8192/overallscale);
|
|
double maxdess = 1.0 / pow(10.0,((B-1.0)*48.0)/20);
|
|
double iirAmount = pow(C,2)/overallscale;
|
|
double offset;
|
|
double sense;
|
|
double recovery;
|
|
double attackspeed;
|
|
|
|
while (--sampleFrames >= 0)
|
|
{
|
|
double inputSampleL = *in1;
|
|
double inputSampleR = *in2;
|
|
|
|
static int noisesourceL = 0;
|
|
static int noisesourceR = 850010;
|
|
int residue;
|
|
double applyresidue;
|
|
|
|
noisesourceL = noisesourceL % 1700021; noisesourceL++;
|
|
residue = noisesourceL * noisesourceL;
|
|
residue = residue % 170003; residue *= residue;
|
|
residue = residue % 17011; residue *= residue;
|
|
residue = residue % 1709; residue *= residue;
|
|
residue = residue % 173; residue *= residue;
|
|
residue = residue % 17;
|
|
applyresidue = residue;
|
|
applyresidue *= 0.00000001;
|
|
applyresidue *= 0.00000001;
|
|
inputSampleL += applyresidue;
|
|
if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
|
|
inputSampleL -= applyresidue;
|
|
}
|
|
|
|
noisesourceR = noisesourceR % 1700021; noisesourceR++;
|
|
residue = noisesourceR * noisesourceR;
|
|
residue = residue % 170003; residue *= residue;
|
|
residue = residue % 17011; residue *= residue;
|
|
residue = residue % 1709; residue *= residue;
|
|
residue = residue % 173; residue *= residue;
|
|
residue = residue % 17;
|
|
applyresidue = residue;
|
|
applyresidue *= 0.00000001;
|
|
applyresidue *= 0.00000001;
|
|
inputSampleR += applyresidue;
|
|
if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
|
|
inputSampleR -= applyresidue;
|
|
}
|
|
//for live air, we always apply the dither noise. Then, if our result is
|
|
//effectively digital black, we'll subtract it aDeEss. We want a 'air' hiss
|
|
|
|
s3L = s2L;
|
|
s2L = s1L;
|
|
s1L = inputSampleL;
|
|
m1L = (s1L-s2L)*((s1L-s2L)/1.3);
|
|
m2L = (s2L-s3L)*((s1L-s2L)/1.3);
|
|
sense = fabs((m1L-m2L)*((m1L-m2L)/1.3));
|
|
//this will be 0 for smooth, high for SSS
|
|
attackspeed = 7.0+(sense*1024);
|
|
//this does not vary with intensity, but it does react to onset transients
|
|
|
|
sense = 1.0+(intensity*intensity*sense);
|
|
if (sense > intensity) {sense = intensity;}
|
|
//this will be 1 for smooth, 'intensity' for SSS
|
|
recovery = 1.0+(0.01/sense);
|
|
//this will be 1.1 for smooth, 1.0000000...1 for SSS
|
|
|
|
offset = 1.0-fabs(inputSampleL);
|
|
|
|
if (flip) {
|
|
iirSampleAL = (iirSampleAL * (1 - (offset * iirAmount))) + (inputSampleL * (offset * iirAmount));
|
|
if (ratioAL < sense)
|
|
{ratioAL = ((ratioAL*attackspeed)+sense)/(attackspeed+1.0);}
|
|
else
|
|
{ratioAL = 1.0+((ratioAL-1.0)/recovery);}
|
|
//returny to 1/1 code
|
|
if (ratioAL > maxdess){ratioAL = maxdess;}
|
|
inputSampleL = iirSampleAL+((inputSampleL-iirSampleAL)/ratioAL);
|
|
}
|
|
else {
|
|
iirSampleBL = (iirSampleBL * (1 - (offset * iirAmount))) + (inputSampleL * (offset * iirAmount));
|
|
if (ratioBL < sense)
|
|
{ratioBL = ((ratioBL*attackspeed)+sense)/(attackspeed+1.0);}
|
|
else
|
|
{ratioBL = 1.0+((ratioBL-1.0)/recovery);}
|
|
//returny to 1/1 code
|
|
if (ratioBL > maxdess){ratioBL = maxdess;}
|
|
inputSampleL = iirSampleBL+((inputSampleL-iirSampleBL)/ratioBL);
|
|
} //have the ratio chase Sense
|
|
|
|
s3R = s2R;
|
|
s2R = s1R;
|
|
s1R = inputSampleR;
|
|
m1R = (s1R-s2R)*((s1R-s2R)/1.3);
|
|
m2R = (s2R-s3R)*((s1R-s2R)/1.3);
|
|
sense = fabs((m1R-m2R)*((m1R-m2R)/1.3));
|
|
//this will be 0 for smooth, high for SSS
|
|
attackspeed = 7.0+(sense*1024);
|
|
//this does not vary with intensity, but it does react to onset transients
|
|
|
|
sense = 1.0+(intensity*intensity*sense);
|
|
if (sense > intensity) {sense = intensity;}
|
|
//this will be 1 for smooth, 'intensity' for SSS
|
|
recovery = 1.0+(0.01/sense);
|
|
//this will be 1.1 for smooth, 1.0000000...1 for SSS
|
|
|
|
offset = 1.0-fabs(inputSampleR);
|
|
|
|
if (flip) {
|
|
iirSampleAR = (iirSampleAR * (1 - (offset * iirAmount))) + (inputSampleR * (offset * iirAmount));
|
|
if (ratioAR < sense)
|
|
{ratioAR = ((ratioAR*attackspeed)+sense)/(attackspeed+1.0);}
|
|
else
|
|
{ratioAR = 1.0+((ratioAR-1.0)/recovery);}
|
|
//returny to 1/1 code
|
|
if (ratioAR > maxdess){ratioAR = maxdess;}
|
|
inputSampleR = iirSampleAR+((inputSampleR-iirSampleAR)/ratioAR);
|
|
}
|
|
else {
|
|
iirSampleBR = (iirSampleBR * (1 - (offset * iirAmount))) + (inputSampleR * (offset * iirAmount));
|
|
if (ratioBR < sense)
|
|
{ratioBR = ((ratioBR*attackspeed)+sense)/(attackspeed+1.0);}
|
|
else
|
|
{ratioBR = 1.0+((ratioBR-1.0)/recovery);}
|
|
//returny to 1/1 code
|
|
if (ratioBR > maxdess){ratioBR = maxdess;}
|
|
inputSampleR = iirSampleBR+((inputSampleR-iirSampleBR)/ratioBR);
|
|
} //have the ratio chase Sense
|
|
|
|
flip = !flip;
|
|
|
|
//begin 64 bit stereo floating point dither
|
|
//int expon; frexp((double)inputSampleL, &expon);
|
|
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
|
|
//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
|
|
//frexp((double)inputSampleR, &expon);
|
|
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
|
|
//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
|
|
//end 64 bit stereo floating point dither
|
|
|
|
*out1 = inputSampleL;
|
|
*out2 = inputSampleR;
|
|
|
|
*in1++;
|
|
*in2++;
|
|
*out1++;
|
|
*out2++;
|
|
}
|
|
}
|