Re: [Discuss-gnuradio] Fw: Re: Error in executing filtering example

[Ghulam Rasool Begh]

Thanks it worked. 
--- On Fri, 2/1/13, Tom Rondeau <address@hidden> wrote:

From: Tom Rondeau <address@hidden>
Subject: Re: [Discuss-gnuradio] Fw: Re: Error in executing filtering example
To: "Ghulam Rasool Begh" <address@hidden>
Cc: "Gnu Radio" <address@hidden>
Date: Friday, February 1, 2013, 8:32 PM

On Fri, Feb 1, 2013 at 9:59 AM, Ghulam Rasool Begh <address@hidden> wrote:

--- On Fri, 2/1/13, Ghulam Rasool Begh <address@hidden> wrote:

From: Ghulam Rasool Begh <address@hidden>

Subject: Re: [Discuss-gnuradio] Error in executing filtering example

To: "Tom Rondeau" <address@hidden>
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 <address@hidden> wrote:

From: Tom Rondeau <address@hidden>
Subject: Re: [Discuss-gnuradio] Error in executing filtering example
To: "Ghulam Rasool Begh" <address@hidden>
Cc: "Gnu Radio" <address@hidden>
Date: Friday, February 1, 2013, 8:04 PM

On Fri, Feb 1, 2013 at 12:00 AM, Ghulam Rasool Begh <address@hidden> wrote:

Hi all,

I was simulating filtering.grc example from Digital 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 Regards

G R Begh

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

Tom

 

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