diff options
Diffstat (limited to 'plugins/MacAU/Sidepass/Sidepass.cpp')
-rwxr-xr-x | plugins/MacAU/Sidepass/Sidepass.cpp | 43 |
1 files changed, 12 insertions, 31 deletions
diff --git a/plugins/MacAU/Sidepass/Sidepass.cpp b/plugins/MacAU/Sidepass/Sidepass.cpp index e3c62c8..1379137 100755 --- a/plugins/MacAU/Sidepass/Sidepass.cpp +++ b/plugins/MacAU/Sidepass/Sidepass.cpp @@ -176,11 +176,8 @@ ComponentResult Sidepass::Reset(AudioUnitScope inScope, AudioUnitElement inElem iirSampleA = 0.0; iirSampleB = 0.0; flip = true; - fpNShapeAL = 0.0; - fpNShapeBL = 0.0; - fpNShapeAR = 0.0; - fpNShapeBR = 0.0; - + fpNShapeL = 0.0; + fpNShapeR = 0.0; return noErr; } @@ -209,11 +206,7 @@ OSStatus Sidepass::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlag overallscale /= 44100.0; overallscale *= GetSampleRate(); Float64 iirAmount = pow(GetParameter( kParam_One ),3)/overallscale; - - Float32 fpTemp; - Float64 fpOld = 0.618033988749894848204586; //golden ratio! - Float64 fpNew = 1.0 - fpOld; - + while (nSampleFrames-- > 0) { inputSampleL = *inputL; inputSampleR = *inputR; @@ -274,28 +267,16 @@ OSStatus Sidepass::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlag inputSampleL = (mid+side)/2.0; inputSampleR = (mid-side)/2.0; - - //noise shaping to 32-bit floating point - if (flip) { - 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; - } flip = !flip; - //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; |