| 摘要 |
An earphone microphone 1 is connected to a mobile terminal 10 by radio waves. A user can preset each of levels of volume and tone quality that he/she considers as appropriate for each of the predetermined use states inside his/her mobile terminal via a volume setting section 15 and a tone quality setting section 16 . When a change in an internal use state is followed by the acquisition of a use state after the change, volume setting information 32 and tone quality setting information 33 both associated with the use state are read out from a memory. Volume and tone quality are each adjusted individually for each of a mobile terminal microphone 11 , a mobile terminal ear receiver 12 , an external microphone 2 , and an earphone 3.
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