filtering (signal processing)

[Nadav Horesh]

As Robert Kern wrote signal tools are part of scipy (www.scipy.org), but:

   1. Numeric package already contains the function "convolve" and
      "cross_correlate"
   2. The "numarray" package (www.sourceforge.net/projects/numpy) which
      intends to replace "Numeric" in the future, contains some
      additional routins in its "Convolve" module. You may be supprised
      or dissapointed by its speed --- depending on your data-set size.
   3. If your convolutions use large kernels, converting to the
      time-domain will save you 99% of computation time.

Nadav.