| 摘要 |
PROBLEM TO BE SOLVED: To provide an AM radio receiver that conducts correction so as to make a level of a desired signal constant and does not respond to temporary electric field fluctuations while a noise is small in order to prevent the desired signal component from being deteriorated when the electric field strength is deteriorated. SOLUTION: The receiver detects an electric field strength of a received AM radio broadcast signal, calculates a mean value of the detected electric field strength for each prescribed period, decides a correction amount of sound output with respect to the averaged electric field strength and changes the sound output depending on the correction amount.
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