diff options
Diffstat (limited to 'plugins/WinVST/Lowpass/LowpassProc.cpp')
| -rwxr-xr-x | plugins/WinVST/Lowpass/LowpassProc.cpp | 68 |
1 files changed, 20 insertions, 48 deletions
diff --git a/plugins/WinVST/Lowpass/LowpassProc.cpp b/plugins/WinVST/Lowpass/LowpassProc.cpp index bcce714..bcc3690 100755 --- a/plugins/WinVST/Lowpass/LowpassProc.cpp +++ b/plugins/WinVST/Lowpass/LowpassProc.cpp @@ -27,9 +27,6 @@ void Lowpass::processReplacing(float **inputs, float **outputs, VstInt32 sampleF 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; @@ -116,33 +113,21 @@ void Lowpass::processReplacing(float **inputs, float **outputs, VstInt32 sampleF iirSampleBR = (iirSampleBR * (1 - (offset * iirAmount))) + (inputSampleR * (offset * iirAmount)); 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; @@ -174,9 +159,6 @@ void Lowpass::processDoubleReplacing(double **inputs, double **outputs, VstInt32 double inputSampleR; double outputSampleL; double outputSampleR; - double fpTemp; - double fpOld = 0.618033988749894848204586; //golden ratio! - double fpNew = 1.0 - fpOld; iirAmount += (iirAmount * tight * tight); if (tight > 0) tight /= 1.5; @@ -263,33 +245,23 @@ void Lowpass::processDoubleReplacing(double **inputs, double **outputs, VstInt32 iirSampleBR = (iirSampleBR * (1 - (offset * iirAmount))) + (inputSampleR * (offset * iirAmount)); 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 64-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; |