diff options
Diffstat (limited to 'plugins/MacAU/EveryTrim/EveryTrim.cpp')
-rwxr-xr-x | plugins/MacAU/EveryTrim/EveryTrim.cpp | 40 |
1 files changed, 11 insertions, 29 deletions
diff --git a/plugins/MacAU/EveryTrim/EveryTrim.cpp b/plugins/MacAU/EveryTrim/EveryTrim.cpp index 94f854e..550a23a 100755 --- a/plugins/MacAU/EveryTrim/EveryTrim.cpp +++ b/plugins/MacAU/EveryTrim/EveryTrim.cpp @@ -203,11 +203,8 @@ ComponentResult EveryTrim::Initialize() // this is called the reset the DSP state (clear buffers, reset counters, etc.) ComponentResult EveryTrim::Reset(AudioUnitScope inScope, AudioUnitElement inElement) { - fpNShapeLA = 0.0; - fpNShapeLB = 0.0; - fpNShapeRA = 0.0; - fpNShapeRB = 0.0; - fpFlip = true; + fpNShapeL = 0.0; + fpNShapeR = 0.0; return noErr; } @@ -226,11 +223,7 @@ OSStatus EveryTrim::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFla Float32 * outputL = (Float32*)(outBuffer.mBuffers[0].mData); Float32 * outputR = (Float32*)(outBuffer.mBuffers[1].mData); UInt32 nSampleFrames = inFramesToProcess; - - Float32 fpTemp; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; - + long double inputSampleL; long double inputSampleR; long double mid; @@ -296,25 +289,14 @@ OSStatus EveryTrim::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFla inputSampleR = (mid-side) * rightgain; //contains mastergain and the gain trim fixing the mid/side - //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((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; |