I developed several classes for ANN modulation.
Please, take a look at
http://wwwinfo.cern.ch/~zviagine/TANN/TANN-1998-08-05/html/TNeuron.html
http://wwwinfo.cern.ch/~zviagine/TANN/TANN-1998-08-05/html/TANN.html
http://wwwinfo.cern.ch/~zviagine/TANN/TANN-1998-08-05/html/TANNff.html
You can download sources from
http://wwwinfo.cern.ch/~zviagine/TANN/TANN-1998-08-05/TANN-1998-08-05.tgz
If you have any ideas of improvement, please, send me E-mail.
P.S. I am not ANN expert.
With best wishes,
Alexander Zvyagin.