Hi Tadilo, have you made sure that specest was correctly installed? (make && make install)
Greetings, Marcus On 30.07.2014 20:48, Bogale, Tadilo Endeshaw wrote: > Hello Martin > > Thank you for the help. I try to run "specest_noisy_sinusoid_mtm.py" (Python > script is also okey for me). However it does not run "it says no module > specest". > > By the way I am using windows 8 OS. > > My goal is is to write a simple python or gnuradio code to perform the > following task > > I have the following variables > > NFFT=1024 > Nav=512 > ampl=1 > seed=1 > Sampling_rate= 10k > > 1. Generate any real time signal (This could be done by using > "gr.noise_source_f (gr.GR_GAUSSIAN, ampl, seed1)). > > 2. Insert throttle to control the sampling rate (i.e., gr.throttle(1, > Sampling_rate)) > > 3. Compute the FFT (even without windowing) (i.e., NFFT samples at a time) > > Let me assume that after I compute FFT and I got an "x" vector of size > NFFT > > 4. Compute the square magnitude of x (This could be done by using > gr.complex_to_mag_squared(NFFT)) > > i.e., in matlab y=abs(x).^2 > > 4. sum the first and second Nav samples > > i.e., av1=sum(y(1:512))/Nav and > av2=sum(y(513:1024))/Nav > > 5. Then display "av1" and "av2" in a text box continuously. > > Note that in matlab (without GUI it is very easy task) > > And I feel that there should be some simple approach to do it in GNUradio > > Thank you again for your help > > --- > Tadilo Endeshaw > Postdoctoral Researcher > Institut National de recherche Scientifique > Centre Energie Matriaux Telecommunications > Place Bonaventure, > 800 de la Gauchetiere Ouest, Suite 6900 > H5A 1K6 > Montreal, QC > Canada > E-mail : tadilo.bog...@emt.inrs.ca > tadilo...@yahoo.com (private) > Personal home page: https://sites.google.com/site/tadilomypage/ > ________________________________________ > From: discuss-gnuradio-bounces+tadilo.bogale=emt.inrs...@gnu.org > [discuss-gnuradio-bounces+tadilo.bogale=emt.inrs...@gnu.org] On Behalf Of > Martin Braun [martin.br...@ettus.com] > Sent: July 30, 2014 10:01 AM > To: discuss-gnuradio@gnu.org > Subject: Re: [Discuss-gnuradio] Spectrum sensing Simulation Only > > On 07/30/2014 03:37 PM, Tom Rondeau wrote: >> The easiest way to average is to use the single_pole_iir_filter to >> smooth out the data stream. But note that you're coming out of the FFT >> block as a vector. You can set the vector length of the single pole IIR, >> but I'd have to review exactly what that means mathematically. It >> probably smooths the entire vector as one as opposed to smoothing over >> index i in each vector. You might have to play around with that. > gr-specest might help you with that (pybombs install gr-specest, or > https://github.com/kit-cel/gr-specest). > > M > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
