diff options
Diffstat (limited to 'plugins/MacAU/DeRez/DeRez.cpp')
| -rwxr-xr-x | plugins/MacAU/DeRez/DeRez.cpp | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/plugins/MacAU/DeRez/DeRez.cpp b/plugins/MacAU/DeRez/DeRez.cpp index 4bc3ee4..e2f3829 100755 --- a/plugins/MacAU/DeRez/DeRez.cpp +++ b/plugins/MacAU/DeRez/DeRez.cpp @@ -171,9 +171,7 @@ void DeRez::DeRezKernel::Reset() position = 0.0; incrementA = 0.0; incrementB = 0.0; - fpNShapeA = 0.0; - fpNShapeB = 0.0; - fpFlip = true; + fpNShape = 0.0; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -200,10 +198,7 @@ void DeRez::DeRezKernel::Process( const Float32 *inSourceP, Float64 overallscale = 1.0; overallscale /= 44100.0; overallscale *= GetSampleRate(); - targetA /= overallscale; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; - + targetA /= overallscale; while (nSampleFrames-- > 0) { long double inputSample = *sourceP; @@ -265,18 +260,11 @@ void DeRez::DeRezKernel::Process( const Float32 *inSourceP, inputSample *= (1.0 - incrementB); } - //noise shaping to 32-bit floating point - Float32 fpTemp = inputSample; - if (fpFlip) { - fpNShapeA = (fpNShapeA*fpOld)+((inputSample-fpTemp)*fpNew); - inputSample += fpNShapeA; - } - else { - 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; lastSample = drySample; |