Digital Filters - I.
Now that we have examined computers and how they represent information,
let us turn to how computers process information. We can, of course,
only examine a very few of the things they do, and will concentrate on
basics per usual.
Much of what computers process are signals from various sources, and
we have already discussed why they are often in the form of a stream
of numbers from an equally spaced sampling system. Linear processing,
which is the only one I have time for in this course, implies digital
filters. To illustrate "style" and how things actually happen in real
life, I propose to tell you first how I became involved in them,
and how I proceeded.
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