NECKLACE TYPED REMOTE TRANSMITTING DEVICE

摘要

A necklace type remote transmitting device is provided to effectively transfer the voice of a user by using an audio amplifying system that has an improve SNR(Signal-To-Noise Ratio) and is not affected by FM interference, and provide convenience of portability. A microphone element(101) converts an audible sound into an input electrical signal and is attached to a necklace element. A battery pack element(102) provides portable energy. The necklace element is worn around the neck of a user and includes at least one infrared light emitting diode mounted on its surface. A pre-amplifier receives the input electrical signal and amplifies it into a pre-amplified signal. A voice processor(104) receives the pre-amplified signal and compresses it into a compressed vice signal. A buffer receives the compressed voice signal and modulates it into a modulated voice signal. A pulse generator receives the modulated voice signal and provides it as an electric pulse position modulation signal. At least one infrared light emitting diode receives the electric pulse position modulation signal and provides it to a mobile transmitter, and is attached to the necklace element.