We propose a method for calculating the reproducing outputs of magnetic heads from their impedance characteristics. The efficiency of a magnetic head is first calculated from the impedance characteristics, and the reproducing output is then calculated from this efficiency. In a study using ferrite heads and Sendust multilayer heads, the calculated reproducing outputs agreed with the measured ones; the differences between the values were generally lower than 1 dB. Using our method, we were able to evaluate the reproducing output characteristics in various conditions from the impedance characteristics of the magnetic heads.

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