| http://www.w3.org/ns/prov#value | - In FIG. 5, reference numeral 70 is a memory for storing an output signal S40 of the LPF 43 in the form of an AGC-amplifier control voltage S40A; and 71 is a switch to determine as to whether or not the output signal S40 of the LPF 43 is to be stored into the memory 70.
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