[PD] block size

[bsaylor at macalester.edu]

I'm not sure what the inlet is for, but yes, just put block~ anywhere in
a containing window.

The overlap factor is most useful for when you want to do FFT operations
on overlapping, windowed (e.g. Hanning) blocks.  It sort of means that
instead of just moving on to the next input block, the inlet~ will give
a block consisting of (say the overlap factor is 2) the last half of the
previous block and and the first half of the next block.  The outlet~
then adds the overlapping blocks back together.  You need an overlap
factor of at least 2 (which seems to be usually good enough) when
working with hanning-windowed blocks.  For convolution, windowing isn't
necessary, so depending on how your algorithm works, an overlap factor
of 1 (e.g. no overlap) might work.  I think this is all at least
conceptually correct; someone correct me if I'm wrong.. :)

Ben

On Tue, Aug 27, 2002 at 01:04:50PM -0700, J. Scott Hildebrand wrote:
> 
>        my block size needs to be 256, but how do i know what to use as the
> overlap factor? and also how do i use the block? it has one inlet, do i
> just need to leave it alone and have my block anywhere in my patch?
> 
>            thanks,
> 
>                     scott
> 
> 
> 
> 
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