diff options
Diffstat (limited to 'plugins/MacAU/FromTape/FromTape.cpp')
-rwxr-xr-x | plugins/MacAU/FromTape/FromTape.cpp | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/plugins/MacAU/FromTape/FromTape.cpp b/plugins/MacAU/FromTape/FromTape.cpp index 4a305e9..30fe41a 100755 --- a/plugins/MacAU/FromTape/FromTape.cpp +++ b/plugins/MacAU/FromTape/FromTape.cpp @@ -221,9 +221,7 @@ void FromTape::FromTapeKernel::Reset() iirSampleZ = 0.0; flip = 0; //noisesource = 0; - fpNShapeA = 0.0; - fpNShapeB = 0.0; - fpFlip = true; + fpNShape = 0.0; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -259,9 +257,6 @@ void FromTape::FromTapeKernel::Process( const Float32 *inSourceP, long double inputSample; - Float32 fpTemp; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; while (nSampleFrames-- > 0) { inputSample = *sourceP; @@ -378,19 +373,11 @@ void FromTape::FromTapeKernel::Process( const Float32 *inSourceP, inputSample = (inputSample * wet) + (drySample * dry); } - //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; |