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Tony Bigbee (@tonycolo)


Re: DC Blocking unexpected results

Reply posted 6 years ago (08/25/2018)
Rick - Yes, the boxes/nodes you see are all the processing that is going on once the raw I/Q samples reach the computer.  The nodes are 1) raw streaming source...

Re: DC Blocking unexpected results

Reply posted 6 years ago (08/19/2018)
Jeff - Thank you for the note.  In my just posted reply to Rick, I decided to post a screenshot of desired behavior from an existing implmentation tool that uses...

Re: DC Blocking unexpected results

Reply posted 6 years ago (08/19/2018)
Rick,Thank you for the pointer to the errata.The "first half and second half swapping" is exactly what I'm doing.The center frequency is the tuned center frequency...

Re: DC Blocking unexpected results

Reply posted 6 years ago (08/12/2018)
Rick - Thank you for the thoughtful reply.  It is because of your interactions on DSPRelated and reputation that I bought your book some time ago.Some comments,...

Re: DC Blocking unexpected results

Reply posted 6 years ago (08/12/2018)
I apply the DC blocker after the IQ samples have arrived from the SDR.  I don't down convert with my processing, but I know the SDR is doing that and then I have...

Re: DC Blocking unexpected results

Reply posted 6 years ago (08/12/2018)
Since the IQ samples are complex, the zero bin is N/2+1 or the center frequency of 407.8 MHz. But you also see is significant negative db values in adjacent bins...

Re: DC Blocking unexpected results

Reply posted 6 years ago (08/10/2018)
Bryant - The zero bin region is 407.8 MHz, the center frequency to which the SDR is tuned, and the center of the graph.   N = bins, and N/2 is the zero bin after...

DC Blocking unexpected results

New thread started 6 years ago
Hello,I am new to DSP processing and am using an implementation of the Yates and Lyons DC blocking algorithm, drawn from the GNU Radio DC Blocker plugin in order...

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