I have written a couple of Tcl applets which can be used to analyse and create waveforms
using 16 Walsh
functions. To use it you will need a Tcl/Tk interpreter, freely available from
There is/was a browser plugin for Tclets, however it seems that plugins are no longer
supported in browsers, so while this page does use the
embed tag to
add the apps to this page it is highly likely your browser won't do anything with it.