A surname from Old Norse. / A city in Martin County, Minnesota, United States. / An unincorporated community in Langlade County, Wisconsin, United States.

plural of Ormsby

A filter of trapezoidal shape specified by four corner frequencies, f1 through f4. The filter rejects below f1 and above f4, is linear from f1 to f2 and from f3 to f4, and is flat from f2 to f3.

plural of Ormsby filter