diff options
Diffstat (limited to 'plugins/MacAU/Drive/Drive.cpp')
| -rwxr-xr-x | plugins/MacAU/Drive/Drive.cpp | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/plugins/MacAU/Drive/Drive.cpp b/plugins/MacAU/Drive/Drive.cpp index 179d9ae..ab3c0bc 100755 --- a/plugins/MacAU/Drive/Drive.cpp +++ b/plugins/MacAU/Drive/Drive.cpp @@ -184,8 +184,7 @@ void Drive::DriveKernel::Reset() { iirSampleA = 0.0; iirSampleB = 0.0; - fpNShapeA = 0.0; - fpNShapeB = 0.0; + fpNShape = 0.0; fpFlip = true; } @@ -220,10 +219,6 @@ void Drive::DriveKernel::Process( const Float32 *inSourceP, Float64 glitch = 0.60; Float64 out; - Float32 fpTemp; - Float64 fpOld = 0.618033988749894848204586; //golden ratio! - Float64 fpNew = 1.0 - fpOld; - while (nSampleFrames-- > 0) { inputSample = *sourceP; if (inputSample<1.2e-38 && -inputSample<1.2e-38) { @@ -282,20 +277,13 @@ void Drive::DriveKernel::Process( const Float32 *inSourceP, if (wet < 1.0) inputSample = (drySample * dry)+(inputSample*wet); //nice little output stage template: if we have another scale of floating point //number, we really don't want to meaninglessly multiply that by 1.0. - - //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; |