| 摘要 |
PROBLEM TO BE SOLVED: To prevent a hands-free speech quality from being deteriorated, even while suppressing a speech with a mobile phone held by a hand.SOLUTION: A hands-free speech communication device is connected to a mobile phone, outputs a voice that is received from the outside of a vehicle by the mobile phone, from a speaker of the vehicle and transmits the voice collected by a microphone of the vehicle to the mobile phone. An interference wave interfering a communication between the outside of the vehicle and the mobile phone is outputted within a range around a driver's seat. On the basis of a result of communication by communication means for communicating with the mobile phone, it is determined whether the mobile phone is connected to the hands-free speech communication device and in the case where it is determined that the mobile phone is being connected to the hands-free speech communication device, the output of the interference wave is stopped. |
