Patent ID: 8442789

Claim:
A method for determining a frequency mask disposed above or below a frequency spectrum of a detected signal with the following method steps running automatically on a computer device: determining every individual ordinate value of a first envelope curve disposed completely above or below the frequency spectrum as a maximum value or respectively minimum value of a given number of respectively adjacent ordinate values (S Lin (n), S Log (n)) of the frequency spectrum linked to a window function (w Lin (n), w log (n)), determining every individual ordinate value of a second envelope curve disposed completely above or below the frequency spectrum and completely above or below the first envelope curve as a maximum value or respectively minimum value of a given number of respectively adjacent ordinate values (S Lin (n), S Log (n)) of the frequency spectrum linked to a window function (w Lin (n), w Log (n)) and determining a minimum number of ordinate values of the frequency mask disposed completely between the first and second envelope curve from ordinate values (E Lin,U1 (n), E Log,U1 (n), E Lin,D1 (n), E Log,D1 (n), E Lin,U2 (n), E Log,U2 (n), E Lin,D2 (n), E Log,D2 (n)) of the first and/or second envelope curve, wherein in each case two successive ordinate values of the frequency mask with a maximum horizontal spacing distance within the first and second envelope curve can be reached in a linear manner relative to one another.