| 摘要 |
The subject of the invention relates to a phonic transceiver device which can be incorporated within motorcycle helmets. It is constituted by firstly combining the positioning of the circuits and members inside the helmet 1, then by incorporating the microphone 4 into the transmitter circuit 5 and finally by the connections of the elements constituting the transmitter circuits 5, receiver circuits 6 and low-frequency switching circuits 8. It is intended to allow intercommunication with switchover between the transmitter and the receiver by voice pulse delivered to the microphone, whilst suppressing the Larsen effects and increasing the range of the wireless transmissions. <IMAGE> |
