Digital Filtering
December 7, 1998

• Today, filters are realized mostly in digital hardware.
• Advantages offered by digital filters include
  • More sophisticated filters can be implemented.
  • Digital filters can be miniaturized.
  • Component inaccuracies is of no concern (manufacturability).
• In general, digital filters can be implemented via microprocessors.
• The operations performed by a digital filter are multiplications and additions.
• The structure of a digital filter is reminiscent of the shift-register circuits discussed earlier.