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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/MacAU/HighImpact/HighImpact.cpp | |
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/MacAU/HighImpact/HighImpact.cpp')
-rwxr-xr-x | plugins/MacAU/HighImpact/HighImpact.cpp | 28 |
1 files changed, 7 insertions, 21 deletions
diff --git a/plugins/MacAU/HighImpact/HighImpact.cpp b/plugins/MacAU/HighImpact/HighImpact.cpp index 91cbd6a..43ca1f5 100755 --- a/plugins/MacAU/HighImpact/HighImpact.cpp +++ b/plugins/MacAU/HighImpact/HighImpact.cpp @@ -175,9 +175,7 @@ ComponentResult HighImpact::Initialize() void HighImpact::HighImpactKernel::Reset() { lastSample = 0.0; - fpNShapeA = 0.0; - fpNShapeB = 0.0; - fpFlip = true; + fpNShape = 0.0; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -201,11 +199,7 @@ void HighImpact::HighImpactKernel::Process( const Float32 *inSourceP, Float64 drySample; Float64 output = GetParameter( kParam_Two ); Float64 wet = GetParameter( kParam_Three ); - Float64 dry = 1.0-wet; - Float32 fpTemp; - Float64 fpOld = 0.618033988749894848204586; //golden ratio! - Float64 fpNew = 1.0 - fpOld; - + Float64 dry = 1.0-wet; Float64 clamp; Float64 threshold = (1.25 - out); @@ -279,19 +273,11 @@ void HighImpact::HighImpactKernel::Process( const Float32 *inSourceP, //nice little output stage template: if we have another scale of floating point //number, we really don't want to meaninglessly multiply that by 1.0. - //noise shaping to 32-bit floating point - if (fpFlip) { - fpTemp = inputSample; - fpNShapeA = (fpNShapeA*fpOld)+((inputSample-fpTemp)*fpNew); - inputSample += fpNShapeA; - } - else { - fpTemp = inputSample; - fpNShapeB = (fpNShapeB*fpOld)+((inputSample-fpTemp)*fpNew); - inputSample += fpNShapeB; - } - fpFlip = !fpFlip; - //end noise shaping on 32 bit output + //32 bit dither, made small and tidy. + int expon; frexpf((Float32)inputSample, &expon); + long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62); + inputSample += (dither-fpNShape); fpNShape = dither; + //end 32 bit dither *destP = inputSample; sourceP += inNumChannels; |