Seth, Did you consider my pink noise implementation https://github.com/Stenzel/newshadeofpink ?
There is one implementation with 20 octaves in pink-low.h - doing much more octaves would require to rewrite it using double precision. Spectrum of generated noise is not yet perfect but slightly bettern than all methods with filtered white noise I have seen so far. In case you really want 32 octaves you would need double precision anyway because the scale of your highest band is roughly 2^-32 times your lowest band and there is no way the 23-bit mantissa of a single precision float can properly handle this. Stefan > On 11 Apr 2016, at 18:57 , Seth Nickell <snick...@gmail.com> wrote: > > I'm applying an iterative function to an input signal, in this instance > pinknoise. Because of the iteration, spectral characteristics in input > signals tend to "blow up" really quickly, so I'm looking for a really high > bandwidth and high quality source of pink noise. > > My understanding is that most of the approaches like the supercollider > PinkNoise.ar ugen are mostly accurate, but over a limited bandwidth. As the > number of octaves grows, the accurcary drops. Is my understanding correct? > > I'm hoping to find a way to generate pink noise that is: > 1) Accurate over an arbitrarily wide bandwidth, at least 32 octaves > 2) Tractable to generate an arbitrarily large number of samples (billions, so > can't fft the whole thing in one pass) > > Any suggestions? I've read through > http://www.firstpr.com.au/dsp/pink-noise/#Pseudo, but everyone seems focused > on fast-generation of pink noise of moderate quality and a relatively narrow > bandwidth. I'm sort of looking for the other side of things... what's the > most ideal pink noise I can generate en masse? > > Thanks, > -Seth > _______________________________________________ > dupswapdrop: music-dsp mailing list > music-dsp@music.columbia.edu > https://lists.columbia.edu/mailman/listinfo/music-dsp _______________________________________________ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
