diff options
Diffstat (limited to 'plugins/LinuxVST/src/DeRez/DeRezProc.cpp')
| -rwxr-xr-x | plugins/LinuxVST/src/DeRez/DeRezProc.cpp | 62 |
1 files changed, 18 insertions, 44 deletions
diff --git a/plugins/LinuxVST/src/DeRez/DeRezProc.cpp b/plugins/LinuxVST/src/DeRez/DeRezProc.cpp index 247a364..cbe42d5 100755 --- a/plugins/LinuxVST/src/DeRez/DeRezProc.cpp +++ b/plugins/LinuxVST/src/DeRez/DeRezProc.cpp @@ -17,8 +17,6 @@ void DeRez::processReplacing(float **inputs, float **outputs, VstInt32 sampleFra double overallscale = 1.0; overallscale /= 44100.0; overallscale *= getSampleRate(); - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; double targetA = pow(A,3)+0.0005; if (targetA > 1.0) targetA = 1.0; @@ -132,26 +130,14 @@ void DeRez::processReplacing(float **inputs, float **outputs, VstInt32 sampleFra lastSampleL = drySampleL; lastSampleR = drySampleR; - //noise shaping to 32-bit floating point - float fpTemp; - if (fpFlip) { - fpTemp = inputSampleL; - fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew); - inputSampleL += fpNShapeLA; - fpTemp = inputSampleR; - fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew); - inputSampleR += fpNShapeRA; - } - else { - fpTemp = inputSampleL; - fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew); - inputSampleL += fpNShapeLB; - fpTemp = inputSampleR; - fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew); - inputSampleR += 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 = inputSampleL; *out2 = inputSampleR; @@ -173,8 +159,6 @@ void DeRez::processDoubleReplacing(double **inputs, double **outputs, VstInt32 s double overallscale = 1.0; overallscale /= 44100.0; overallscale *= getSampleRate(); - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; double targetA = pow(A,3)+0.0005; if (targetA > 1.0) targetA = 1.0; @@ -288,26 +272,16 @@ void DeRez::processDoubleReplacing(double **inputs, double **outputs, VstInt32 s lastSampleL = drySampleL; lastSampleR = drySampleR; - //noise shaping to 64-bit floating point - double fpTemp; - if (fpFlip) { - fpTemp = inputSampleL; - fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew); - inputSampleL += fpNShapeLA; - fpTemp = inputSampleR; - fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew); - inputSampleR += fpNShapeRA; - } - else { - fpTemp = inputSampleL; - fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew); - inputSampleL += fpNShapeLB; - fpTemp = inputSampleR; - fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew); - inputSampleR += fpNShapeRB; - } - fpFlip = !fpFlip; - //end noise shaping on 64 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 = inputSampleL; *out2 = inputSampleR; |