Chris Stankevitz wrote:
Johnathan Corgan wrote:
You *may* be seeing an artifact of the truncation of the ADC samples.
Johnathan, others:
I believe this is not the case. When I download 16 bit samples from
the USRP and remove the 4LSBs myself, the spectrum looks normal. When
I ask the USRP for 8 bit samples, the spectrum shows a 1MHz wide sinc
lobe. Since it turns out the bottleneck for me is writing to the hard
drive, I'm happy removing the LSBs on the PC for now, but I'd love to
hear your ideas!
Also, for the comparison to be valid, you need to drop the bottom 8
bits, not 4. Remember that while the ADCs are 12 bits, we carry 16+
bits of precision throughout the signal processing.
Matt
_______________________________________________
Discuss-gnuradio mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
