Newbie question that I can't seem to find an answer to

Does a stream-to-vector block buffer the input stream? For example, if
I want to create a length 2048-sample vector from a stream, is the
vector updated every 2048 samples? Or is it updated every sample?

I want to feed an FFT block with a 2048-sample vector and I want to make
sure that I’m not doing a new FFT every sample.

Scott Bennett

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Stream-to-vector “does the right thing”, and is regularly used in front
of FFT blocks.