>  I try not to let it get to me ...

It's easy enough -

Just apply an inverse fourier "view world through vinegar colo[u]red
glasses" convolution (VWTVCG) against "average response with 3 sigma +
outliers removed", apply a boxcar filter based on this and deal with
what's left. Often it's very good. If the only signal you get is more
than 10 dB below the noise floor you can, if you can be bothered,
repeat the above but reducing the boxcar to 2 sigma+. This will
usually but not always get at least something worthwhile. If not you
could try 1 sigma+ acceptance bounds but that's almost certain to
produce such a noisy signal if the other attempts have failed that
it's unlikely to be useful.

Warning: In applying above be sure to apply the INVERSE 'vinegar'
convolution or truly horrid things could happen. (This approach is
useful if a 'shock jock' generator is required but is not apposite
here).

In place of continuous inverse Fourier VWTVCG convolution a discrete
form or Winograd transform could be utilised.

While this does involve both real and complex issues, the discrete
versions are susceptible to window length errors which may allow out
of band signal to be aliased into the passband to produce undetected
subharmonic vinegarising. This may no longer be overly acerbic but is
liable to noise up the otherwise often useful or even highly valuable
residual signal. The Winograd transform (formally known as the
Winograd Fourier Transform Algorithm (or usually just WFTA*, **)
allows complexity bounds to be set on the devinegaring but, as may be
imagined, application of WFTA is fraught with hazards which need not
be mentioned here.

Suggestions to try to emulate a be a Cool(ey) Tu(r)key or to not get
butterflies, are liable to be beyond the pale into insignificance.
Sometimes its better, and almost always easier, if transformation
doesn't seem to produce redemption, to just dump the sample and walk
away, walk away, walk away, rather than trying to sort wheat, gold and
sheep from Goats, chaff and dross (in no particular order). There will
always be more data.


           Russell


* Really.

** Gus may want to sue them, depending on precedence. Terry developed
his transform in

Further reading:

WTFA:

http://en.wikipedia.org/wiki/Fast_Fourier_transform
http://cnx.org/content/m16335/latest/
http://www.springerlink.com/content/911956337j3n2873/
http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=3D1162924
http://eprints.iisc.ernet.in/8237/
http://www.eda.org/VIUF_proc/Spring94/WAILES94A.PDF

WA WA WA ...

- http://www.eric-clapton.co.uk/ecla/lyrics/walk-away.html

- http://www.google.co.nz/search?q=3Dwalk+away+walk+away&hl=3Den&prmd=3Dv&s=
ource=3Duniv&tbs=3Dvid:1&tbo=3Du&ei=3DtfSCTNIqidS1A4iw4PYH&sa=3DX&oi=3Dvide=
o_result_group&ct=3Dtitle&resnum=3D1&ved=3D0CCUQqwQwAA

Vinegairette transform:

http://webcache.googleusercontent.com/search?q=3Dcache:OJlYelgDg2YJ:www.con=
tracostatimes.com/ci_6468260+%2Btransform+%2Bvinaigrette+%2Bfiltering&cd=3D=
3&hl=3Den&ct=3Dclnk&gl=3Dnz

http://www.google.co.nz/#q=3D%2Btransform+%2Bvinaigrette&hl=3Den&sa=3DX&prm=
d=3Dv&source=3Duniv&tbs=3Dvid:1&tbo=3Du&ei=3DVfKCTI2GLJT2swO1qoX4Bw&oi=3Dvi=
deo_result_group&ct=3Dtitle&resnum=3D2&ved=3D0CCEQqwQwAQ&fp=3D9b8c2d1298cd8=
951
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