[PD] tabread4~ problem or is it just me?

[Ypatios Grigoriadis]

On 8/5/06, Mathieu Bouchard <matju at artengine.ca> wrote:
>
> On Sat, 5 Aug 2006, Ypatios Grigoriadis wrote:
>
> > I have this little problem with [tabread4~ ]. When I use it to read from
> > a relative short Array it works just fine. But now I need an array of
> > 2.646e+007 elements(10 min with sample rate 44100). When I try it with
> > such a long array I hear distortion from 1min 30 and it becomes worse as
> > the time goes.
>
> Distorsion would "start" at 1min35, the next distorsion level at 3min10
> (double), and so on. But really it starts before, just softly, e.g. 0min47
> is another threshold. The reason is that you are hitting the maximum
> precision of float numbers, which is 24 binary significant digits. Said
> thresholds are always at position 2*2*2*...*2 in the array. Starting with
> each threshold you have twice less timewise precision. This makes
> [tabread4~] go nuts after a while.
>
> The easiest fix around this is to create a [tabread4~] external which uses
> another float for large-scale index, so that the small-scale index can
> stay precise. In the long term it would be better if Pd had an option for
> higher-precision floats (double-floats have much more precision than you
> need).
>
>   _ _ __ ___ _____ ________ _____________ _____________________ ...
> | Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju
> | Freelance Digital Arts Engineer, Montréal QC Canada
>

Thank you guys, I now have the picture of the problem.

However, I am not a programmer which means that it is impossible for me to
create an external... So if any one has free time next weekend...

Or if anyone can figure out another solution, i would be grateful.

Thank you anyway!!!

-- 
Ypatios.
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