Abstract
A loudspeaker checking apparatus includes a signal generating unit configured to generate a test tone signal by adding first and second sinusoidal signals of different frequencies; a control circuit configured to allow the signal generating unit to generate a plurality of test tone signals by varying the frequencies; an output circuit configured to simultaneously supply the plurality of test tone signals to a plurality of loudspeakers, respectively; an analyzing unit configured to perform frequency analysis on an output signal from a microphone that picks up test tones output from the plurality of loudspeakers; and a determining unit configured to determine whether the respective loudspeakers are normal or abnormal on the basis of an analysis result made by the analyzing unit.
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