blur is a generic function used to add noise to a signal as defined
by various objects. The generic function invokes different methods
which depend on the class of the first argument.
# S4 method for ANY
blur(object, x, ...)The form of the value returned by blur depends on the
class of its argument. See the documentation of the particular methods
for details of what is produced by that method.
an object from which adding noise to its signal is desired
matrix containing signal to be affected
additional arguments affecting the noise addition
Kevin R. Coombes krc@silicovore.com,