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remove soft clipper

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Chris
2025-10-23 20:16:35 +02:00
parent 63a00e1744
commit 8e04e9bf67
1 changed files with 0 additions and 110 deletions
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110
clip/aw_clipsoftly.h
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@@ -1,110 +0,0 @@
#pragma once
#include <cstdlib>
#include <stdint.h>
#include <cmath>
namespace trnr {
// soft clipper based on ClipSoftly by Chris Johnson
class aw_clipsoftly {
public:
aw_clipsoftly()
{
samplerate = 44100;
lastSampleL = 0.0;
lastSampleR = 0.0;
for (int x = 0; x < 16; x++) {
intermediateL[x] = 0.0;
intermediateR[x] = 0.0;
}
fpdL = 1.0;
while (fpdL < 16386) fpdL = rand() * UINT32_MAX;
fpdR = 1.0;
while (fpdR < 16386) fpdR = rand() * UINT32_MAX;
// this is reset: values being initialized only once. Startup values, whatever they are.
}
void set_samplerate(double _samplerate) { samplerate = _samplerate; }
template <typename t_sample>
void process_block(t_sample** inputs, t_sample** outputs, long sample_frames)
{
t_sample* in1 = inputs[0];
t_sample* in2 = inputs[1];
t_sample* out1 = outputs[0];
t_sample* out2 = outputs[1];
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= samplerate;
int spacing = floor(overallscale); // should give us working basic scaling, usually 2 or 4
if (spacing < 1) spacing = 1;
if (spacing > 16) spacing = 16;
while (--sample_frames >= 0) {
double inputSampleL = *in1;
double inputSampleR = *in2;
if (fabs(inputSampleL) < 1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR) < 1.18e-23) inputSampleR = fpdR * 1.18e-17;
double softSpeed = fabs(inputSampleL);
if (softSpeed < 1.0) softSpeed = 1.0;
else softSpeed = 1.0 / softSpeed;
if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
inputSampleL = sin(inputSampleL) * 0.9549925859; // scale to what cliponly uses
inputSampleL = (inputSampleL * softSpeed) + (lastSampleL * (1.0 - softSpeed));
softSpeed = fabs(inputSampleR);
if (softSpeed < 1.0) softSpeed = 1.0;
else softSpeed = 1.0 / softSpeed;
if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
inputSampleR = sin(inputSampleR) * 0.9549925859; // scale to what cliponly uses
inputSampleR = (inputSampleR * softSpeed) + (lastSampleR * (1.0 - softSpeed));
intermediateL[spacing] = inputSampleL;
inputSampleL = lastSampleL; // Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateL[x - 1] = intermediateL[x];
lastSampleL = intermediateL[0]; // run a little buffer to handle this
intermediateR[spacing] = inputSampleR;
inputSampleR = lastSampleR; // Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateR[x - 1] = intermediateR[x];
lastSampleR = intermediateR[0]; // run a little buffer to handle this
// 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++;
}
}
private:
double samplerate;
double lastSampleL;
double intermediateL[16];
double lastSampleR;
double intermediateR[16];
uint32_t fpdL;
uint32_t fpdR;
// default stuff
};
} // namespace trnr