| http://www.w3.org/ns/prov#value | - In more recent art, in which individual tracks on magnetic tapes are erased, several factors including the period of a sinusoidal AC field of constant amplitude; the weakening of that field with distance from its source, such as an erase head; and the motion of tape with respect to that source; cooperate to cause the decaying AC effect, which generally serves to reduce tape noise by randomizing th
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