Thanks to all for your fast, detailed and so clear answers! Now I think I'm
able to set correctly this parameter!
Thank you so much,
Best regards
Thomas
Le 2 nov. 2017 10:30 AM, "Thom L" a écrit :
> Hi Marcus,
> Thank you for the detailed response!
> This is very clear now
> Best regards,
> Thom
Hi Marcus,
Thank you for the detailed response!
This is very clear now
Best regards,
Thomas
Le 2 nov. 2017 10:26 AM, "Marcus Müller" a écrit :
> Hi Thomas,
>
> a filter usually has a passband, where signal goes through relatively
> unattenuated, and a stop band, where signal is heavily
> attenua
Hi Thomas,
a filter usually has a passband, where signal goes through relatively
unattenuated, and a stop band, where signal is heavily
attenuated/suppressed.
The bandwidth between the edge of the pass band and the start of the
stop band is never 0 for filters that can be implemented in real
It's the width of the filter response from the -6 dB point to the -60 dB
point. On analog radios, it's called the "shape factor" of the filter
and expressed as a ratio (a 500 Hz filter at -6 dB with a 2.0 shape
factor will be 1000 Hz wide at -60 dB).
Here's a small flow graph that illustrates
Check this picture. Hope it helps
http://www.labbookpages.co.uk/audio/files/firWindowing/kaiser.png
If I am not wrong, a very small transition width will require more number
of filter taps.
On Thu, Nov 2, 2017 at 8:54 AM, Thom L wrote:
> Hello,
> I can't understand what the "transition width"
Hello,
I can't understand what the "transition width" parameter represents when
filtering in gnuradio .. And how to adjust it effectively?
Thanks
Thomas
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