Introduction - If you have any usage issues, please Google them yourself
Sound is usually considered as a mono-dimensional signal (i.e., a function
of time) representing the air pressure in the ear canal. For the purpose of this
book, a Single-Input Single-Output (SISO) System is defined as any algorithm
or device that takes a signal in input and produces a signal in output. Most of
our discussion will regard linear systems, that can be defined as those systems
for which the superposition principle holds: