[sdiy] Why do we need the buffers? - gm-C filter question

[René Schmitz]

JH. wrote:
> It's been a long time, but I think I got reduced HF attenuation even
> with buffers, when compared to buffers and amplifying / attenuation.

Hmm, if we're talking about the 100kHz+ region, then a simple passive 
network somewhere could have taken care of that. Or was that in the 
normal audio band?

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159