Forum: GNU Radio Fw: Re: Error in executing filtering example

--- On Fri, 2/1/13, Ghulam Rasool Begh <grbegh136@yahoo.com> wrote:

From: Ghulam Rasool Begh <grbegh136@yahoo.com>
Subject: Re: [Discuss-gnuradio] Error in executing filtering example
To: "Tom Rondeau" <tom@trondeau.com>
Date: Friday, February 1, 2013, 8:28 PM

Thanks for reply.
Actually from the presentation I could get all values but for variable 
block with ID as taps , i was not sure what value I should choose as it 
was not clear from the presentation i downloaded. I guess if proper 
value is given to that block, the flow graph will run.




--- On Fri, 2/1/13, Tom Rondeau <tom@trondeau.com> wrote:

From: Tom Rondeau <tom@trondeau.com>
Subject: Re: [Discuss-gnuradio] Error in executing filtering example
To: "Ghulam Rasool Begh" <grbegh136@yahoo.com>
Cc: "Gnu Radio" <discuss-gnuradio@gnu.org>
Date: Friday, February 1, 2013, 8:04 PM

On Fri,
 Feb 1, 2013 at 12:00 AM, Ghulam Rasool Begh <grbegh136@yahoo.com> 
wrote:




Hi all,

I was simulating filtering.grc example fromDigital Modulation Primer 
using GNU Radio by Tom Rondeau.However during execution it gives 
following error. Can anybody
 help it out.


Executing: "/home/ehsan/mygn/filtering.py"


Traceback (most recent call last): File "/home/ehsan/mygn/filtering.py", 
line 119, in <module>

  tb = filtering() File "/home/ehsan/mygn/filtering.py", line 83, in 
__init__

  self.fft_filter_xxx_0 = filter.fft_filter_ccc(1, (), 1) File 
"/usr/local/lib/python2.7/site-packages/gnuradio/filter/filter_swig.py", 
line 677, in make

  return _filter_swig.fft_filter_ccc_make(*args, **kwargs)
RuntimeError: fft_impl_fftw: invalid fft_size


>>> Done


With RegardsG R Begh


Can you tell us what you were doing when you go this error? Was it 
running at all?
Tom

On Fri, Feb 1, 2013 at 9:59 AM, Ghulam Rasool Begh 
<grbegh136@yahoo.com>wrote:

>
>
> Thanks for reply.
> Actually from the presentation I could get all values but for *variable
> block* with ID as taps , i was not sure what value I should choose as it
> was not clear from the presentation i downloaded. I guess if proper value
>  is given to that block, the flow graph will run.
>
>
The 'taps' variable are the filter taps that go into the FFT Filter 
block.
As you change these taps, you change the response of the filter. It is
already filled in as " firdes.low_pass_2(1, samp_rate, bw, bw/10.0, 80)"
Where 'samp_rate' is static variable set to 100 ksps and the 'bw' is a
dynamic variable that can be changed at runtime by the Qt slider.

Tom

Thanks it worked.
--- On Fri, 2/1/13, Tom Rondeau <tom@trondeau.com> wrote:

From: Tom Rondeau <tom@trondeau.com>
Subject: Re: [Discuss-gnuradio] Fw: Re: Error in executing filtering 
example
To: "Ghulam Rasool Begh" <grbegh136@yahoo.com>
Cc: "Gnu Radio" <discuss-gnuradio@gnu.org>
Date: Friday, February 1, 2013, 8:32 PM

On Fri, Feb 1, 2013 at 9:59 AM, Ghulam Rasool Begh <grbegh136@yahoo.com> 
wrote:






--- On Fri, 2/1/13, Ghulam Rasool Begh <grbegh136@yahoo.com> wrote:



From: Ghulam Rasool Begh <grbegh136@yahoo.com>
Subject: Re: [Discuss-gnuradio] Error in executing filtering example
To: "Tom Rondeau" <tom@trondeau.com>


Date: Friday, February 1, 2013, 8:28 PM

Thanks for reply.
Actually from the presentation I could get all values but for variable 
block with ID as taps , i was not sure what value I should choose as it 
was not clear from the presentation i downloaded. I guess if proper 
value is given to that block, the flow graph will
 run.

The 'taps' variable are the filter taps that go into the FFT Filter 
block. As you change these taps, you change the response of the filter. 
It is already filled in as "firdes.low_pass_2(1, samp_rate, bw, bw/10.0, 
80)" Where 'samp_rate' is static variable set to 100 ksps and the 'bw' 
is a dynamic variable that can be changed at runtime by the Qt slider.


Tom







--- On Fri, 2/1/13, Tom Rondeau <tom@trondeau.com> wrote:



From: Tom Rondeau <tom@trondeau.com>


Subject: Re: [Discuss-gnuradio] Error in executing filtering example
To: "Ghulam Rasool Begh" <grbegh136@yahoo.com>
Cc: "Gnu Radio" <discuss-gnuradio@gnu.org>


Date: Friday, February 1, 2013, 8:04 PM

On Fri,
 Feb 1, 2013 at 12:00 AM, Ghulam Rasool Begh <grbegh136@yahoo.com> 
wrote:






Hi all,



I was simulating filtering.grc example fromDigital Modulation Primer 
using GNU Radio by Tom Rondeau.However during execution it gives 
following error. Can anybody
 help it out.




Executing: "/home/ehsan/mygn/filtering.py"




Traceback (most recent call last): File "/home/ehsan/mygn/filtering.py", 
line 119, in <module>



  tb = filtering() File "/home/ehsan/mygn/filtering.py", line 83, in 
__init__



  self.fft_filter_xxx_0 = filter.fft_filter_ccc(1, (), 1) File 
"/usr/local/lib/python2.7/site-packages/gnuradio/filter/filter_swig.py", 
line 677, in make



  return _filter_swig.fft_filter_ccc_make(*args, **kwargs)


RuntimeError: fft_impl_fftw: invalid fft_size




>>> Done




With RegardsG R Begh




Can you tell us what you were doing when you go this error? Was it 
running at all?
Tom



_______________________________________________

Discuss-gnuradio mailing list

Discuss-gnuradio@gnu.org

https://lists.gnu.org/mailman/listinfo/discuss-gnuradio