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Joris van Rantwijk joris at jorisvr.nlHi Steve, Thanks for your quick answer. On 2014-01-05, Steve Markgraf wrote: > We could return some sort of error in those cases, but such low rates > (< 1MS/s) aren't recommended in general. If you know that the hardware is going to freak out, I think returning -EINVAL is a more useful thing to do. Normally I expect a function to either do what it promised or return an error. Because RTL-SDR is reverse-engineered, it is not fair to judge it to such high standards. Still, it would be good to document known limitations of the RTL chip in the library via comments or error codes. > First of all, the > anti-aliasing filter we're using has a fixed bandwidth of 2 MHz, and > although the coefficients can be changed, I doubt you can get a nice > filter for lower bandwidths with such a low order. And then the ADCs > only have 8 bits resolution, so you want to improve that by > decimating, and also profit from decimation gain. That is good to know. So in general I should try to keep the hardware sample rate high, and resample in software if needed. Thanks, Joris.