| 摘要 |
PROBLEM TO BE SOLVED: To provide a hands-free call device which suppresses the voice or speech of a partner which a fellow passenger in a front passenger seat hears, realizes privacy and maintains confidentiality, and is suitable for a privacy purpose. SOLUTION: The hands-free call device is provided with 1st speakers 102a and 102b, which output the voice and the speech of the telephone conversation for the driver, a hands-free control unit 100 which performs hands free conversation using a mobile phone 101, and 2nd speakers 103a and 103b which output mask tone that masks the voice and speech of the speech to the fellow passenger in the front passenger seat, when hands-free call is made, using the hands-free control unit. COPYRIGHT: (C)2004,JPO
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