diff options
Diffstat (limited to 'plugins/MacAU/PurestDrive/PurestDrive.cpp')
| -rwxr-xr-x[-rw-r--r--] | plugins/MacAU/PurestDrive/PurestDrive.cpp | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/plugins/MacAU/PurestDrive/PurestDrive.cpp b/plugins/MacAU/PurestDrive/PurestDrive.cpp index fe73631..7f6d0a0 100644..100755 --- a/plugins/MacAU/PurestDrive/PurestDrive.cpp +++ b/plugins/MacAU/PurestDrive/PurestDrive.cpp @@ -159,9 +159,7 @@ ComponentResult PurestDrive::Initialize() void PurestDrive::PurestDriveKernel::Reset() { previousSample = 0.0; - fpNShapeA = 0.0; - fpNShapeB = 0.0; - fpFlip = true; + fpNShape = 0.0; } @@ -182,9 +180,6 @@ void PurestDrive::PurestDriveKernel::Process( const Float32 *inSourceP, long double inputSample; long double drySample; Float64 apply; - Float32 fpTemp; - long double fpOld = 0.618033988749894848204586; //golden ratio! - long double fpNew = 1.0 - fpOld; while (nSampleFrames-- > 0) { inputSample = *sourceP; @@ -227,19 +222,11 @@ void PurestDrive::PurestDriveKernel::Process( const Float32 *inSourceP, previousSample = sin(drySample); //apply the sine while storing previous sample - //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; |