[PD] big soundfiles
Mathieu Bouchard
matju at artengine.ca
Thu Nov 25 13:52:58 CET 2010
On Tue, 23 Nov 2010, Derek Holzer wrote:
> And keep in mind that sound quality goes down as file size goes up. This is
> because of the interpolation. You might do better cutting your file up and
> putting it into several different arrays.
If you play at normal speed with [tabread~] (not 4), you hit that problem
anyway at index 16777216, and it's not because of any interpolation.
However, if you do use [tabread4~] with fractional floats, you hit the
problem at much lower indices, because fractions disappear gradually
first, then odd numbers disappear, etc.
Overall, it's because for a float, the numerator has to be between 8388608
and 16777215, while the denominator (or the multiplier) is a power of
two... so each time you cross a new power of two, you lose half of the
details, as the tiniest steps double in size.
_______________________________________________________________________
| Mathieu Bouchard ------------------------------------- Aix-en-Provence
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