[Matrix-SIG] Sigtools 0.40 released

Travis Oliphant Oliphant.Travis@mayo.edu
Tue, 23 Feb 1999 18:14:55 -0600 (EST)

I'm announcing the release of Sigtools 0.40 for Python with Numerical

This module provides several general-purpose signal processing functions
which can operate on Numerical Python arrays.  These modules provide
core functionality for signal/image/array processing using Numerical

The module currently has four methods:

(1) an N-D convolution filter (blurring, edge-detection, etc.)

(2) an N-D order filter (a median filter is an example of this type)

(3) a linear_filter function that operates on N-D (possibly
non-contiguous) arrays along an arbitrary axis.  The linear_filter
implements any linear system with a rational/polynomial transfer function.
(It is just like the filter function in MATLAB).

(4) a Parks-McClellan algorithm for designing optimal FIR filters:  This
is just a wrapper around GPL'd code written by Jake Janovetz.

Tarfiles (with a Setup file)
and RPM's are available at 


--Travis Oliphant