On Sat, May 17, 2014 at 9:53 PM, Tom Rondeau <t...@trondeau.com> wrote:
> So, yes and no on that. There's the information theoretic concept of > sample rate, which is what you are talking about here. But underneath, we > normalize all sample rates relative to 1. So it's the number of samples > relative to that which matters. We provide the concept of "sample rate" in > the signal generator block only to make it easy to use real values of Hz or > cycles/second here. But the frequency you're talking about gets divided by > the sample rate before anything else happens. So it's a convenience of > representation. > > Then there's the time-based concept of sample rate, which doesn't matter > to a GPP but matters a great deal to physical hardware like your sound card > or radio front end. That sample rate has a real physical meaning, and we > have to acknowledge this when connecting multiple pieces of hardware > together. Basically, we look at rate matching. But the computer or GNU > Radio itself doesn't really know anything about 1 us per sample. > > This is, I think, on of the more complicated concepts to get about > software radio. > > Tom > Thanks for the explanation.
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