Abstract
In this study we compare the recording performance of 4 mm metal particle (MP) and Ba-ferrite (BF) tapes using helical scan digital audio tape (DAT) mechanisms and heads. At low bit densities the MP tapes have higher output signal and SNR compared with the BF tapes, but at high bit densities the reverse is true. This superior recording performance of the BF tapes, along with their immunity to environmental corrosion, recommends them as the media of choice for 4 mm data recording applications.
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