Ie the sequence 1 2 3 4 5 becomes 1 1 3 3 5 5.

Is there a way to specify how the output of poly is upsampled to produce its output in the parent patch say to get something like 1 0 3 0 5 0 (ie zero padding). Or possible interpolating…

I seem to remember talking with somebody about this a while back but I can’t seem to find any info in the forum.

you would have to interpolate it yourself – outside the poly
patcher.
it was about 2 years ago here in the list where someone
gave an example, but i cant find it anymore. it was something
using count~ so that you know where you are …

which is what you would have to expect, you throw away information…

> Is there a way to specify how the output of poly is upsampled to
> porduce its output in the parent patch say to get something like 1 0
> 3 0 5 0 (ie zero padding). Or possible interpolating…

zero padding would screw your signal completely, why would you want that?…
Interpolating is just a low pass filter of half the samplerate (outside
of the poly~)…

Stefan

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Stefan Tiedje————x——-
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In a lot of DSP literature they all deal with upsampling thru zero insertion. I was trying to develope a multirate system that was based off of the perfect reconstruction filters. I used haar filters. The idea is to split a signals spectrum in half with the analysis filters… downsample each half and then upsample and filter using the resynthesis filters. Basically a one level realtime wavelet system. When you repeat sample values in the system I created it increases the overall power of the resultant signal which rendered the resythesis part of the patch inaccurate… after doing the zero insertion it worked. Unfortuneatly I cant’ get more than one stage to work properly….