[sc-users] [DSP] zero padding = interpolation ?

[Zlatko Baracskai <quattrophobia@xxxxxxxxxxxxxx>]

Hi All,

A quick debate here - 

JOS states in one of his online bits that zeropadding a signal before FFT would obviously give you 
a larger FFT size but that it will not contain significant spectral info as it is essentialy intrepolation of the magnitude values anyway.

This was in contrast to what my good old DSP teacher Peter Pabon taught me and yesterday I found a graph
describing zero padding in Udo Zolzers DAFX first chapter that clearly shows that the new magnitude points in
his example do give a better frequency resolution. It was also explicitly advised to increase frequency resolution
without compromising time resolution.

Anyone?

If someone has a zeropadding snippet, I'dd love to see it and try a few things,
can it be done with existing UGens anyway?


Cheers

Zlatko