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:

1976-06-29

Pagination or Media Count:

4.0

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