| 摘要 |
PROBLEM TO BE SOLVED: To reduce a risk of generation of a noise sound in switching of a voice signal with simple constitution.SOLUTION: In a voice utterance system (100), a voice switching part (12) of home electric equipment (1) alternates a voice PWM signal of home electric equipment with a voice PWM signal of a home electric adapter device (2). An adapter-side voice control part (21) of the home electric adapter device (2) sets a logical level of the voice PWM signal of the home electric adapter device (2) in voice signal alternation timing according to the logical level of the voice PWM signal of the home electric equipment (1). |
