MOBILE INFORMATION TERMINAL AND CONTROL METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To complement the voice output function of a voice output device by a mobile information terminal.SOLUTION: Based on a first voice signal (#5) representing an output sound of a voice output device (200) and a second voice signal (#7) representing a detection sound of a microphone (104), a mobile information terminal (100) estimates a sound volume ratio of the output sound included in the detection sound to the sound volume of the output sound. Based on the estimated sound volume ratio, the mobile information terminal (100) selects the sound volume of a voice represented by the first voice signal output from a speaker (109).