HANDS-FREE CAR ADAPTER FOR AN IMPORTED FM TRANSMITTER TELEPHONE, INCIDENT MANAGEMENT, INCIDENTALLY RECEIVED, ACCORDING TO THE STATE OF CONCORDANCE WITH THE FREQUENCY OF THE ASSOCIATED RADIO-RECEIVER.

摘要

This device (10) relays the signals from an audio source to a radio receiver such as a car radio. It comprises: means for producing a reference signal, for modulating the radio signal by said reference signal or for audio signals received by the coupling means, a microphone (20), for capturing the acoustic signals present in the environment the device, and means for analyzing the acoustic signals picked up by the microphone. On receipt of a request, for example an incoming call, the device executes an algorithm for detecting a known signal in a noisy environment, to recognize the presence or absence of the reference signal in the acoustic signals picked up by the microphone. . If so, it sends back an acceptance signal. In the opposite case, it activates a buzzer (22) and / or visual (30) to the user, so that the latter reacts and performs an action to restore the matching of the transmission frequencies, by example by setting a rotary knob (28) or pressing a push-button (32) frequency preselection.