Subject: Re: [linux-audio-dev] swh plugins and fixing undenormalize
From: Dave Griffiths (dave_AT_pawfal.org)
Date: Thu Jun 24 2004 - 11:42:15 EEST
On Thu, 24 Jun 2004 11:03:34 +0200, Tim Blechmann wrote
> > Since the problem is denormalised numbers, has anybody thought of
> > adding a small DC offset (1e-15) or alternating the
> > addition/subraction of a small value?
> of course it is possible to add a small dc offset ... but what if we
> are working in a feedback loop? or even worse with a high pass
> filter? if you alter addition/substraction and send it throuth a low
> pass filer? the denormal problem is not a trivial one, but afaik a
> macro like this is the only one working for sure...
The other approach I've seen is to add inaudable random noise to the signal.
dave
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