In a call supporting device (10), a speaker unit, a first microphone unit, and a second microphone unit are housed in a casing of the call supporting device (10). Moreover, an opening (34) of the speaker unit, an opening (33-1) of the first microphone unit, and an opening (33-2) of the second microphone unit are arranged on one surface of the casing of the call supporting device (10). Furthermore, the opening (33-1) of the first microphone unit, and the opening (33-2) of the second microphone unit are arranged at uniform distances from the opening (34) of the speaker unit.
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