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author | Chris Johnson <jinx6568@sover.net> | 2019-01-27 21:13:54 -0500 |
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committer | Chris Johnson <jinx6568@sover.net> | 2019-01-27 21:13:54 -0500 |
commit | 966f2d253cd2ee6ce140ad68095a20a9d2b63052 (patch) | |
tree | b0400d95bd06512531ade6ddf55190a58b6a5623 /plugins/WinVST/DrumSlam | |
parent | 0887543349dbbec0721a1fc8b1c7deba9afefa8b (diff) | |
download | airwindows-lv2-port-966f2d253cd2ee6ce140ad68095a20a9d2b63052.tar.gz airwindows-lv2-port-966f2d253cd2ee6ce140ad68095a20a9d2b63052.tar.bz2 airwindows-lv2-port-966f2d253cd2ee6ce140ad68095a20a9d2b63052.zip |
Floating Point Dither For All
Diffstat (limited to 'plugins/WinVST/DrumSlam')
-rwxr-xr-x | plugins/WinVST/DrumSlam/.vs/VSTProject/v14/.suo | bin | 23040 -> 23040 bytes | |||
-rwxr-xr-x | plugins/WinVST/DrumSlam/DrumSlam.cpp | 7 | ||||
-rwxr-xr-x | plugins/WinVST/DrumSlam/DrumSlam.h | 9 | ||||
-rwxr-xr-x | plugins/WinVST/DrumSlam/DrumSlamProc.cpp | 66 |
4 files changed, 27 insertions, 55 deletions
diff --git a/plugins/WinVST/DrumSlam/.vs/VSTProject/v14/.suo b/plugins/WinVST/DrumSlam/.vs/VSTProject/v14/.suo Binary files differindex a2b66ba..b712621 100755 --- a/plugins/WinVST/DrumSlam/.vs/VSTProject/v14/.suo +++ b/plugins/WinVST/DrumSlam/.vs/VSTProject/v14/.suo diff --git a/plugins/WinVST/DrumSlam/DrumSlam.cpp b/plugins/WinVST/DrumSlam/DrumSlam.cpp index 8a6ae7b..5b88619 100755 --- a/plugins/WinVST/DrumSlam/DrumSlam.cpp +++ b/plugins/WinVST/DrumSlam/DrumSlam.cpp @@ -35,12 +35,9 @@ DrumSlam::DrumSlam(audioMasterCallback audioMaster) : iirSampleGR = 0.0; iirSampleHR = 0.0; lastSampleR = 0.0; - - fpNShapeLA = 0.0; - fpNShapeLB = 0.0; - fpNShapeRA = 0.0; - fpNShapeRB = 0.0; fpFlip = true; + fpNShapeL = 0.0; + fpNShapeR = 0.0; //this is reset: values being initialized only once. Startup values, whatever they are. _canDo.insert("plugAsChannelInsert"); // plug-in can be used as a channel insert effect. diff --git a/plugins/WinVST/DrumSlam/DrumSlam.h b/plugins/WinVST/DrumSlam/DrumSlam.h index 5ec2fda..418282d 100755 --- a/plugins/WinVST/DrumSlam/DrumSlam.h +++ b/plugins/WinVST/DrumSlam/DrumSlam.h @@ -54,11 +54,8 @@ private: char _programName[kVstMaxProgNameLen + 1]; std::set< std::string > _canDo; - long double fpNShapeLA; - long double fpNShapeLB; - long double fpNShapeRA; - long double fpNShapeRB; - bool fpFlip; + long double fpNShapeL; + long double fpNShapeR; //default stuff double iirSampleAL; @@ -80,7 +77,7 @@ private: double iirSampleGR; double iirSampleHR; double lastSampleR; - + bool fpFlip; float A; float B; float C; diff --git a/plugins/WinVST/DrumSlam/DrumSlamProc.cpp b/plugins/WinVST/DrumSlam/DrumSlamProc.cpp index 171b353..2e86142 100755 --- a/plugins/WinVST/DrumSlam/DrumSlamProc.cpp +++ b/plugins/WinVST/DrumSlam/DrumSlamProc.cpp @@ -25,8 +25,6 @@ void DrumSlam::processReplacing(float **inputs, float **outputs, VstInt32 sample double out = B; double wet = C; double dry = 1.0 - wet; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; while (--sampleFrames >= 0) { @@ -125,6 +123,8 @@ void DrumSlam::processReplacing(float **inputs, float **outputs, VstInt32 sample highSampleL = inputSampleL - iirSampleHL; highSampleR = inputSampleR - iirSampleHR; } + fpFlip = !fpFlip; + //generate the tone bands we're using if (lowSampleL > 1.0) {lowSampleL = 1.0;} if (lowSampleL < -1.0) {lowSampleL = -1.0;} @@ -219,26 +219,14 @@ void DrumSlam::processReplacing(float **inputs, float **outputs, VstInt32 sample inputSampleR = (inputSampleR * wet) + (drySampleR * dry); } - //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; @@ -268,8 +256,6 @@ void DrumSlam::processDoubleReplacing(double **inputs, double **outputs, VstInt3 double out = B; double wet = C; double dry = 1.0 - wet; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; while (--sampleFrames >= 0) { @@ -368,6 +354,8 @@ void DrumSlam::processDoubleReplacing(double **inputs, double **outputs, VstInt3 highSampleL = inputSampleL - iirSampleHL; highSampleR = inputSampleR - iirSampleHR; } + fpFlip = !fpFlip; + //generate the tone bands we're using if (lowSampleL > 1.0) {lowSampleL = 1.0;} if (lowSampleL < -1.0) {lowSampleL = -1.0;} @@ -462,26 +450,16 @@ void DrumSlam::processDoubleReplacing(double **inputs, double **outputs, VstInt3 inputSampleR = (inputSampleR * wet) + (drySampleR * dry); } - //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; |