Subject: Re: [linux-audio-dev] EVO 0.0.5 released , resampling (interpolation) support added
From: Miller Puckette (mpuckett_AT_man104-1.ucsd.edu)
Date: Tue Sep 19 2000 - 21:02:14 EEST
Hi all,
You can do the trick in double precision and get at least 40 bits of
real precision. I usually use the bottom 32 bits for the fractional
part and some of the top 20 bits for the integer part; this would have
to be adjusted for huge "wavetables" though.
The curious can download Pd from http://www.crca.ucsd.edu/~msp/software.html
and look in src/d_osc.c; or e-mail me and I'll send it to you privately...
cheers
Miller
On Tue, Sep 19, 2000 at 01:02:12PM -0400, Paul Barton-Davis wrote:
> >Basically what he is doing is using fixed point math:
> >interpreting a part of the 32 word as integer part,
> >and the other as fractional part.
> >
> >I've thought about this , but in EVO's case we have to
> >deal with samples up to 2GB, that means we need the full
> >32bit for the integer part.
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