October 1991 | Contractor Report NTIA CR-91-43
Effective Erasure of Magnetic Tapes: 2. Criteria and Models Toward an Effective “Standard”
Cite This Publication
David Middleton, “Effective Erasure of Magnetic Tapes: 2. Criteria and Models Toward an Effective “Standard”,” Contractor Report NTIA CR-91-43, October 1991, U.S. Department of Commerce, National Telecommunications and Information Administration, Institute for Telecommunication Sciences.
Abstract: Erasure “standards” employing a saturating field which clips a test sinusoidal so that its 3Qharmonic is 12 dB down from the first harmonic is seen to be incomplete. The probability of (just) detecting the erased signal, under false alarm control, is not . . .
Keywords: magnetic tape; erasure standards; saturating field; erased signal; false alarm control; harmonics; signal duration; deflection criteria; deflection parameter; detection parameter; threshold coherent detection; probabilistic methods; background noise levels
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