Re: [Discuss-gnuradio] low frequency in GRC

2014-05-17 Thread Activecat
On Sat, May 17, 2014 at 9:53 PM, Tom Rondeau 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

Re: [Discuss-gnuradio] low frequency in GRC

2014-05-17 Thread Tom Rondeau
On Sat, May 17, 2014 at 2:38 AM, Activecat wrote: > On Fri, May 16, 2014 at 2:01 AM, Marcus Leech wrote: > >> Gnu Radio is a streaming architecture. Sample-rate is actually >> almost-entirely meaningless within the flowgraph, and only really >> has meaning "at the edges" when interfacing to th

Re: [Discuss-gnuradio] low frequency in GRC

2014-05-16 Thread Activecat
On Fri, May 16, 2014 at 2:01 AM, Marcus Leech wrote: > Gnu Radio is a streaming architecture. Sample-rate is actually > almost-entirely meaningless within the flowgraph, and only really > has meaning "at the edges" when interfacing to the real world. The only > exception is the throttle block,

Re: [Discuss-gnuradio] low frequency in GRC

2014-05-15 Thread Marcus Leech
Gnu Radio is a streaming architecture. Sample-rate is actually almost-entirely meaningless within the flowgraph, and only really   has meaning "at the edges" when interfacing to the real world.  The only exception is the throttle block, and even it doesn't   produce *precise* sample-rates.   For th

Re: [Discuss-gnuradio] low frequency in GRC

2014-05-15 Thread madengr
Regarding the low sample rate, I have had this issue too when decimating to narrow bandwidths. I assume sample rate is an integer for most blocks therefore one can't go below 1 samp/sec? Lou KD4HSO -- View this message in context: http://gnuradio.4.n7.nabble.com/low-frequency-in-GRC-tp48237p

Re: [Discuss-gnuradio] low frequency in GRC

2014-05-15 Thread jason sam
Actually i think the problem is that i have very low sample rate according to the 1024 FFT.. On Thu, May 15, 2014 at 7:38 PM, jason sam wrote: > > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discus

Re: [Discuss-gnuradio] low frequency in GRC

2014-05-15 Thread Mike Jameson
If you attach your GRC flowgraph I'll take a look at it for you. Mike -- Mike Jameson M0MIK BSc MIET Ettus Research Technical Support Email: supp...@ettus.com Web: http://ettus.com On Thu, May 15, 2014 at 10:06 AM, jason sam wrote: > I am using GNU Radio Companion 3.7.3...when i set the frequ

[Discuss-gnuradio] low frequency in GRC

2014-05-15 Thread jason sam
I am using GNU Radio Companion 3.7.3...when i set the frequency of my signal source to low values(in Hz or kHz),i get no signal on my scope or fft sink?? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/dis