[PD] tabread4~ interpolation at slooow playback?

[IOhannes m zmölnig]

On 06/29/2015 06:22 AM, Peter P. wrote:
> All this sounds surprisingly complicated for a very common task, that is
> reading audio data in normal quality from tables larger than 32k.

reading audio data in "normal" quality from tables larger than 32k is
indeed a common task.
however, upsampling a signal by a factor of 192 (you are trying to play
back 100 samples in 400ms, right?) without any artefacts is not.
you will need a high-order sinc interpolation to get that amount of
upsampling correct - which would eat enough CPU cycles and needs enough
surrounding points to make it unfit for a simple general-purpose
interpolator as used by [tabread4].


hdsr
IOhannes

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