[PD] band limited (anti-alias) techniques

cyrille henry ch at chnry.net
Tue Nov 24 16:22:25 CET 2015

yes, this can be very efficient when the table is pre computed.
using 32 bits int and a 8K sample table, I recently implement a BL saw~ in an arduino due with surprisingly fast and good result.


Le 24/11/2015 16:12, Frank Barknecht a écrit :
> Hi,
> On Tue, Nov 24, 2015 at 01:01:00PM -0200, Alexandre Torres Porres wrote:
>> Do any of you know the advantages and disadvantages between "*oversampling
>> + filtering*" and the other techniques?
> A big difference is CPU load: the bandlimited oscillators in the rj-library
> aimed at mobile devices of some years ago use the transition splicing technique
> because it's one of the fastest. It only needs a simple table lookup in
> addition to the phasor~ etc.  that are running anyway. We even replaced the
> tabread4~ with tabread~ to save even more CPU.
> Ciao

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