On 2022-03-16 11:17, George Edwards wrote:
Hello GNURadio Community,
I have used the firdes.low_pass_2(...) function in many of my Gnuradio
blocks in the past to pass filter coefficients to my blocks and it has
always worked.
Yesterday I opened one of my GRC that uses his filter function and it
showed an error. The specific usage was:
firdes.low_pass_2(1,samp_rate1, fcut, ftrans,attenuation_dB=100,
window=filter.firdes.WIN_BLACKMAN_HARRIS)
Error message: There is no attribute WIN_BLACKMAN_HARRIS
I then opened several previously created GRCs blocks with this
function and all showed the same error. I then opened some radio
blocks which required a user to set thewindow and noticed that what
used to be set as WIN_BLACKMAN was now Blackman.
I searched the Gnuradio literature, but could not find anything to
help me. I made the changes below to the function, but all failed:
window=filter.firdes.Win_blackman_harris, window=Blackman_harris then,
I would leave out the word window, also in calling the function, I
tried low_pass_2 instead of firdes.low_pass_2.
I would appreciate getting some suggestions from someone who has
worked recently with this filter function.
Thank you!
Regards,
George
I suspect that you're dealing with differences between GR 3.7 and
GR3.8/3.9/3.10
See:
https://github.com/gnuradio/gnuradio/issues/4510
