[Discuss-gnuradio] CIC stop band

[Hans Glitsch]

Hello,

What is the stop band of the FPGA CIC filter?  How do I figure out the 
attenuation at a given frequency outside my bandwidth?

I'm decimating by 250.

Thanks,
Hans


----- Original Message ----- 
From: "Vincenzo Pellegrini" <address@hidden>
To: "gnuradio mailing list" <address@hidden>
Sent: Wednesday, May 16, 2007 3:13 PM
Subject: [Discuss-gnuradio] wise big block interleaving in GNURadio


> Hi everybody,
> I need to do interleaving on very big blocks of data, I have tried to
> demultiplex my stream into several (6048) output streams in order to be
> able to act on it and then re-multiplex it to something serial.
>
> unfortunately this seems to be too much, could anybody tell me what is
> the wise way to do interleaving on big blocks in gnuradio?
> (or point me towards some useful example?)
>
> the error i get is:
>
> gr_vmcircbuf_sysv_shm: shmget (2): No space left on device
> gr_buffer::allocate_buffer: failed to allocate buffer of size 32 KB
> terminate called after throwing an instance of 'std::bad_alloc'
>  what():  St9bad_alloc
> ./run_tests: line 37:  9751 Aborted                 $file
> FAIL: run_tests
> ===================
>
> Many Thanks
> vincenzo
>
>
>
>
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