diff options
Diffstat (limited to 'plugins/MacVST/Righteous4/source/Righteous4Proc.cpp')
| -rwxr-xr-x | plugins/MacVST/Righteous4/source/Righteous4Proc.cpp | 56 |
1 files changed, 20 insertions, 36 deletions
diff --git a/plugins/MacVST/Righteous4/source/Righteous4Proc.cpp b/plugins/MacVST/Righteous4/source/Righteous4Proc.cpp index 7ed44cf..630360f 100755 --- a/plugins/MacVST/Righteous4/source/Righteous4Proc.cpp +++ b/plugins/MacVST/Righteous4/source/Righteous4Proc.cpp @@ -300,17 +300,14 @@ void Righteous4::processReplacing(float **inputs, float **outputs, VstInt32 samp //output dither section if (bitDepth == 3) { - //noise shaping to 32-bit floating point - float fpTemp = inputSampleL; - fpNShapeL += (inputSampleL-fpTemp); - inputSampleL += fpNShapeL; - fpTemp = inputSampleR; - fpNShapeR += (inputSampleR-fpTemp); - inputSampleR += fpNShapeR; - //for deeper space and warmth, we try a non-oscillating noise shaping - //that is kind of ruthless: it will forever retain the rounding errors - //except we'll dial it back a hair at the end of every buffer processed - //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 } else { //entire Naturalize section used when not on 32 bit out @@ -515,12 +512,6 @@ void Righteous4::processReplacing(float **inputs, float **outputs, VstInt32 samp *out1++; *out2++; } - fpNShapeL *= 0.999999; - fpNShapeR *= 0.999999; - //we will just delicately dial back the FP noise shaping, not even every sample - //this is a good place to put subtle 'no runaway' calculations, though bear in mind - //that it will be called more often when you use shorter sample buffers in the DAW. - //So, very low latency operation will call these calculations more often. } void Righteous4::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) @@ -529,11 +520,11 @@ void Righteous4::processDoubleReplacing(double **inputs, double **outputs, VstIn double* in2 = inputs[1]; double* out1 = outputs[0]; double* out2 = outputs[1]; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; double overallscale = 1.0; overallscale /= 44100.0; overallscale *= getSampleRate(); + long double fpOld = 0.618033988749894848204586; //golden ratio! + long double fpNew = 1.0 - fpOld; double IIRscaleback = 0.0002597;//scaleback of harmonic avg IIRscaleback /= overallscale; IIRscaleback = 1.0 - IIRscaleback; @@ -816,17 +807,16 @@ void Righteous4::processDoubleReplacing(double **inputs, double **outputs, VstIn //output dither section if (bitDepth == 3) { - //noise shaping to 32-bit floating point - double fpTemp = inputSampleL; - fpNShapeL += (inputSampleL-fpTemp); - inputSampleL += fpNShapeL; - fpTemp = inputSampleR; - fpNShapeR += (inputSampleR-fpTemp); - inputSampleR += fpNShapeR; - //for deeper space and warmth, we try a non-oscillating noise shaping - //that is kind of ruthless: it will forever retain the rounding errors - //except we'll dial it back a hair at the end of every buffer processed - //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 } else { //entire Naturalize section used when not on 32 bit out @@ -1031,10 +1021,4 @@ void Righteous4::processDoubleReplacing(double **inputs, double **outputs, VstIn *out1++; *out2++; } - fpNShapeL *= 0.999999; - fpNShapeR *= 0.999999; - //we will just delicately dial back the FP noise shaping, not even every sample - //this is a good place to put subtle 'no runaway' calculations, though bear in mind - //that it will be called more often when you use shorter sample buffers in the DAW. - //So, very low latency operation will call these calculations more often. }
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