Specification example

A second recursive digital filter...

The specification describes the application.  It says what and not how.

It is often given with a graphical representation, particularly in signal processing. This graph is the dataflow programming of a digital filter.

A dataflow graph can handle a wide variety of data type, transformed with some operators. We call algebra the data type and associated operators.

One operator allows the time to be handled: it is named the Z-delay operator.

 GRONICS'96 article

 EUSIPCO'96 article