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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/LinuxVST/src/PurestEcho | |
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/LinuxVST/src/PurestEcho')
-rwxr-xr-x | plugins/LinuxVST/src/PurestEcho/.vs/Console4Channel64/v14/.suo | bin | 0 -> 32768 bytes | |||
-rwxr-xr-x | plugins/LinuxVST/src/PurestEcho/.vs/VSTProject/v14/.suo | bin | 0 -> 23040 bytes | |||
-rwxr-xr-x | plugins/LinuxVST/src/PurestEcho/PurestEcho.cpp | 7 | ||||
-rwxr-xr-x | plugins/LinuxVST/src/PurestEcho/PurestEcho.h | 7 | ||||
-rwxr-xr-x | plugins/LinuxVST/src/PurestEcho/PurestEchoProc.cpp | 62 |
5 files changed, 22 insertions, 54 deletions
diff --git a/plugins/LinuxVST/src/PurestEcho/.vs/Console4Channel64/v14/.suo b/plugins/LinuxVST/src/PurestEcho/.vs/Console4Channel64/v14/.suo Binary files differnew file mode 100755 index 0000000..777b846 --- /dev/null +++ b/plugins/LinuxVST/src/PurestEcho/.vs/Console4Channel64/v14/.suo diff --git a/plugins/LinuxVST/src/PurestEcho/.vs/VSTProject/v14/.suo b/plugins/LinuxVST/src/PurestEcho/.vs/VSTProject/v14/.suo Binary files differnew file mode 100755 index 0000000..1ddbf82 --- /dev/null +++ b/plugins/LinuxVST/src/PurestEcho/.vs/VSTProject/v14/.suo diff --git a/plugins/LinuxVST/src/PurestEcho/PurestEcho.cpp b/plugins/LinuxVST/src/PurestEcho/PurestEcho.cpp index 6b8c302..6bcaa3f 100755 --- a/plugins/LinuxVST/src/PurestEcho/PurestEcho.cpp +++ b/plugins/LinuxVST/src/PurestEcho/PurestEcho.cpp @@ -19,11 +19,8 @@ PurestEcho::PurestEcho(audioMasterCallback audioMaster) : E = 0.0; for(int count = 0; count < totalsamples-1; count++) {dL[count] = 0;dR[count] = 0;} gcount = 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/LinuxVST/src/PurestEcho/PurestEcho.h b/plugins/LinuxVST/src/PurestEcho/PurestEcho.h index a298dd2..870e158 100755 --- a/plugins/LinuxVST/src/PurestEcho/PurestEcho.h +++ b/plugins/LinuxVST/src/PurestEcho/PurestEcho.h @@ -62,11 +62,8 @@ private: int gcount; - long double fpNShapeLA; - long double fpNShapeLB; - long double fpNShapeRA; - long double fpNShapeRB; - bool fpFlip; + long double fpNShapeL; + long double fpNShapeR; //default stuff float A; diff --git a/plugins/LinuxVST/src/PurestEcho/PurestEchoProc.cpp b/plugins/LinuxVST/src/PurestEcho/PurestEchoProc.cpp index 77e4b2f..e8e141c 100755 --- a/plugins/LinuxVST/src/PurestEcho/PurestEchoProc.cpp +++ b/plugins/LinuxVST/src/PurestEcho/PurestEchoProc.cpp @@ -76,9 +76,6 @@ void PurestEcho::processReplacing(float **inputs, float **outputs, VstInt32 samp double delaysBufferL; double delaysBufferR; - float fpTemp; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; long double inputSampleL; long double inputSampleR; @@ -177,25 +174,14 @@ void PurestEcho::processReplacing(float **inputs, float **outputs, VstInt32 samp gcount--; - //noise shaping to 32-bit floating point - 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; @@ -276,9 +262,6 @@ void PurestEcho::processDoubleReplacing(double **inputs, double **outputs, VstIn double delaysBufferL; double delaysBufferR; - double fpTemp; //this is different from singlereplacing - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; long double inputSampleL; long double inputSampleR; @@ -377,25 +360,16 @@ void PurestEcho::processDoubleReplacing(double **inputs, double **outputs, VstIn gcount--; - //noise shaping to 64-bit floating point - 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; |