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path: root/plugins/MacVST/Highpass/source/HighpassProc.cpp
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-rwxr-xr-xplugins/MacVST/Highpass/source/HighpassProc.cpp68
1 files changed, 20 insertions, 48 deletions
diff --git a/plugins/MacVST/Highpass/source/HighpassProc.cpp b/plugins/MacVST/Highpass/source/HighpassProc.cpp
index b1e7de9..371ed57 100755
--- a/plugins/MacVST/Highpass/source/HighpassProc.cpp
+++ b/plugins/MacVST/Highpass/source/HighpassProc.cpp
@@ -26,9 +26,6 @@ void Highpass::processReplacing(float **inputs, float **outputs, VstInt32 sample
double inputSampleR;
double outputSampleL;
double outputSampleR;
- float fpTemp;
- long double fpOld = 0.618033988749894848204586; //golden ratio!
- long double fpNew = 1.0 - fpOld;
iirAmount += (iirAmount * tight * tight);
if (tight > 0) tight /= 1.5;
@@ -114,33 +111,21 @@ void Highpass::processReplacing(float **inputs, float **outputs, VstInt32 sample
iirSampleBR = (iirSampleBR * (1 - (offset * iirAmount))) + (inputSampleR * (offset * iirAmount));
outputSampleR = outputSampleR - iirSampleBR;
}
+ fpFlip = !fpFlip;
if (wet < 1.0) outputSampleL = (outputSampleL * wet) + (inputSampleL * dry);
if (wet < 1.0) outputSampleR = (outputSampleR * wet) + (inputSampleR * dry);
- //noise shaping to 32-bit floating point
- if (fpFlip) {
- fpTemp = outputSampleL;
- fpNShapeLA = (fpNShapeLA*fpOld)+((outputSampleL-fpTemp)*fpNew);
- outputSampleL += fpNShapeLA;
-
- fpTemp = outputSampleR;
- fpNShapeRA = (fpNShapeRA*fpOld)+((outputSampleR-fpTemp)*fpNew);
- outputSampleR += fpNShapeRA;
- }
- else {
- fpTemp = outputSampleL;
- fpNShapeLB = (fpNShapeLB*fpOld)+((outputSampleL-fpTemp)*fpNew);
- outputSampleL += fpNShapeLB;
-
- fpTemp = outputSampleR;
- fpNShapeRB = (fpNShapeRB*fpOld)+((outputSampleR-fpTemp)*fpNew);
- outputSampleR += fpNShapeRB;
- }
- fpFlip = !fpFlip;
- //end noise shaping on 32 bit output
+ //stereo 32 bit dither, made small and tidy.
+ int expon; frexpf((float)inputSampleL, &expon);
+ long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+ inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
+ frexpf((float)inputSampleR, &expon);
+ dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+ inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
+ //end 32 bit dither
*out1 = outputSampleL;
*out2 = outputSampleR;
@@ -171,9 +156,6 @@ void Highpass::processDoubleReplacing(double **inputs, double **outputs, VstInt3
double inputSampleR;
double outputSampleL;
double outputSampleR;
- double fpTemp;
- long double fpOld = 0.618033988749894848204586; //golden ratio!
- long double fpNew = 1.0 - fpOld;
iirAmount += (iirAmount * tight * tight);
if (tight > 0) tight /= 1.5;
@@ -259,33 +241,23 @@ void Highpass::processDoubleReplacing(double **inputs, double **outputs, VstInt3
iirSampleBR = (iirSampleBR * (1 - (offset * iirAmount))) + (inputSampleR * (offset * iirAmount));
outputSampleR = outputSampleR - iirSampleBR;
}
+ fpFlip = !fpFlip;
if (wet < 1.0) outputSampleL = (outputSampleL * wet) + (inputSampleL * dry);
if (wet < 1.0) outputSampleR = (outputSampleR * wet) + (inputSampleR * dry);
- //noise shaping to 32-bit floating point
- if (fpFlip) {
- fpTemp = outputSampleL;
- fpNShapeLA = (fpNShapeLA*fpOld)+((outputSampleL-fpTemp)*fpNew);
- outputSampleL += fpNShapeLA;
-
- fpTemp = outputSampleR;
- fpNShapeRA = (fpNShapeRA*fpOld)+((outputSampleR-fpTemp)*fpNew);
- outputSampleR += fpNShapeRA;
- }
- else {
- fpTemp = outputSampleL;
- fpNShapeLB = (fpNShapeLB*fpOld)+((outputSampleL-fpTemp)*fpNew);
- outputSampleL += fpNShapeLB;
-
- fpTemp = outputSampleR;
- fpNShapeRB = (fpNShapeRB*fpOld)+((outputSampleR-fpTemp)*fpNew);
- outputSampleR += fpNShapeRB;
- }
- fpFlip = !fpFlip;
- //end noise shaping on 32 bit output
+ //stereo 64 bit dither, made small and tidy.
+ int expon; frexp((double)inputSampleL, &expon);
+ long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+ dither /= 536870912.0; //needs this to scale to 64 bit zone
+ inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
+ frexp((double)inputSampleR, &expon);
+ dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
+ dither /= 536870912.0; //needs this to scale to 64 bit zone
+ inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
+ //end 64 bit dither
*out1 = outputSampleL;
*out2 = outputSampleR;