HANDS-FREE TALKING DEVICE AND TONE QUALITY ADJUSTER

摘要

Constant phone-call quality is kept irrespective of setting of a tone adjusting function of a cellular phone under connection. There is provided a sound collector 11 for collecting voices and converting the voices to a voice signal, a communication unit 12 for communicating with a cellular phone terminal 20 according to a predetermined communication protocol, and a reproducing unit 13 for reproducing the voice signal received in the communication unit 12. A hands-free phone-call device 10 for enabling the cellular phone terminal 20 to execute hands-free phone call is provided with a signal processor 14 for subjecting a voice signal to signal processing of adjusting tone quality to a predetermined state, and a controller 16 for obtaining information on a tone adjusting function from the cellular phone terminal 20 when the cellular phone terminal 20 having the tone adjusting function for adjusting the tone quality during phone call is connected to communicate, and transmitting a predetermined command when it is determined that the tone adjusting function of the cellular phone terminal 20 can be stopped or not, whereby the tone adjusting function of the cellular phone terminal 20 is stopped and then the signal processor 14 is made to execute the signal processing.