Accession Number : ADD002859

Title :   Self-Adjusting Digital Notch Filter.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : McCown,Rainer F

Report Date : 29 Jun 1976

Pagination or Media Count : 4

Abstract : The patent relates to digital filter auto-adjustment to variations in input signals achieved by normalizing the output of the second of two substantially identical series-connected digital filter stages and subtracting the normalized output of the second filter stage from its input to provide a measure of filter signal residue power. Deviations of the signal residue power from the preset limits of a signal residue power standard are detected and signals responsive thereto are used to appropriately adjust variable bandwidth constants in both filter stages.

Descriptors :   *Bandstop filters, *Digital filters, *Patents, Setting(Adjusting), Self operation

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE