diff options
Diffstat (limited to 'plugins/MacAU/ToVinyl4/ToVinyl4.cpp')
| -rwxr-xr-x | plugins/MacAU/ToVinyl4/ToVinyl4.cpp | 40 |
1 files changed, 11 insertions, 29 deletions
diff --git a/plugins/MacAU/ToVinyl4/ToVinyl4.cpp b/plugins/MacAU/ToVinyl4/ToVinyl4.cpp index 0f7f248..3f0d6e4 100755 --- a/plugins/MacAU/ToVinyl4/ToVinyl4.cpp +++ b/plugins/MacAU/ToVinyl4/ToVinyl4.cpp @@ -270,11 +270,8 @@ ComponentResult ToVinyl4::Reset(AudioUnitScope inScope, AudioUnitElement inElem s1R = s2R = s3R = 0.0; o1R = o2R = o3R = 0.0; m1R = m2R = desR = 0.0; - fpNShapeAL = 0.0; - fpNShapeBL = 0.0; - fpNShapeAR = 0.0; - fpNShapeBR = 0.0; - fpFlip = true; + fpNShapeL = 0.0; + fpNShapeR = 0.0; return noErr; @@ -295,11 +292,7 @@ OSStatus ToVinyl4::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlag UInt32 nSampleFrames = inFramesToProcess; Float64 overallscale = 1.0; overallscale /= 44100.0; - overallscale *= GetSampleRate(); - Float32 fpTemp; - Float64 fpOld = 0.618033988749894848204586; //golden ratio! - Float64 fpNew = 1.0 - fpOld; - + overallscale *= GetSampleRate(); Float64 fusswithscale = 50000; //corrected Float64 cutofffreq = GetParameter( kParam_One ); Float64 resonance = 0.992; @@ -741,25 +734,14 @@ OSStatus ToVinyl4::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlag inputSampleR = accumulatorSample; //we just re-use accumulatorSample to do this little shuffle - //noise shaping to 32-bit floating point - if (fpFlip) { - fpTemp = inputSampleL; - fpNShapeAL = (fpNShapeAL*fpOld)+((inputSampleL-fpTemp)*fpNew); - inputSampleL += fpNShapeAL; - fpTemp = inputSampleR; - fpNShapeAR = (fpNShapeAR*fpOld)+((inputSampleR-fpTemp)*fpNew); - inputSampleR += fpNShapeAR; - } - else { - fpTemp = inputSampleL; - fpNShapeBL = (fpNShapeBL*fpOld)+((inputSampleL-fpTemp)*fpNew); - inputSampleL += fpNShapeBL; - fpTemp = inputSampleR; - fpNShapeBR = (fpNShapeBR*fpOld)+((inputSampleR-fpTemp)*fpNew); - inputSampleR += fpNShapeBR; - } - fpFlip = !fpFlip; - //end noise shaping on 32 bit output + //stereo 32 bit dither, made small and tidy. + int expon; frexpf((Float32)inputSampleL, &expon); + long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62); + inputSampleL += (dither-fpNShapeL); fpNShapeL = dither; + frexpf((Float32)inputSampleR, &expon); + dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62); + inputSampleR += (dither-fpNShapeR); fpNShapeR = dither; + //end 32 bit dither *outputL = inputSampleL; *outputR = inputSampleR; |