[Discuss-gnuradio] complex bandpass vs real low-pass

[Marcus D. Leech]

I have been in the habit of using complex-bandpass filters even when I'm 
just looking for a symmetric response.  I did some measurements
  today and found a 40-45% performance advantage to using a low-pass 
real filter when a symmetric response is desired.  What's the "crux"
  of the performance difference?

Needless to say, I ran around and changed all my recent "stuff" to use 
low-pass filters :-)

--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org