Re: [fluid-dev] Purpose of dither?

[Z F]

> 
> I appreciate the discussion on the dithering additions made by
> Mihail.
> I'm no DSP expert unfortunately, so its nice to have others around
> who
> know more than me and are interested in FluidSynth.  I can
> conceptually
> understand how converting from a higher bit width to a lower could
> introduce distortions and how these distortions could contain
> periodic
> patterns and thus heard as new frequencies in the output.  It also
> makes
> sense that its better to have a small amount of white noise
> distortion
> over a small amount of periodic distortion.  For this reason and the
> fact that it sounds like other software generally follows this
> practice,
> I think it should be the default in FluidSynth, provided the
> implementation is correct.  Of note, is that when using Jack output,
> the
> dithering is not done by FluidSynth (but likely by Jack).

This makes me happy :) THis is exactly how I view the process. The last
stage of audio processing should be responsible for dithering if it is
needed at all...

ZF


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