Encoding hand-held microphone device with loudspeaker

Abstract

An encoding hand-held microphone device with a loudspeaker is used for completing a transfer function of conversation of a vehicle-mounted platform interphone and is composed of a transfer circuit and a hand-held microphone circuit. The transfer circuit is composed of an audio switching unit, a CPU control unit and an audio amplifier. The hand-held microphone circuit is composed of a call receiving unit, a call sending unit, an emitting switch unit and an encoding key control unit. The interphone hand-held microphone in the present invention can be flexibly applied to a vehicle-mounted interphone with a large volume, and the hand-held microphone is directly used for talking and listening to effectively solve the problems that because the hand-held microphone and the vehicle-mounted interphone have a certain distance in use or the vehicle-mounted interphone requires a specific installation position, the receiver on the vehicle-mounted interphone fails to effectively perform the sound amplification effect and the user cannot listen to the audio signals received by the vehicle-mounted interphone in time; and the hand-held microphone can guarantee that the user can effectively listen to the audio signals received by the vehicle-mounted interphone in the greatest range so as to guarantee clearer and more timely and convenient communication.

Description

technical field [0001] The invention relates to vehicle-mounted intercom equipment, in particular to a coded hand microphone device with a loudspeaker. Background technique [0002] The radio car walkie-talkie is a kind of wireless communication tool in mobile calls. Because it has the function of allowing many people to communicate with each other at the same time, so that many people can listen to the same person at the same time, communicate in real time, and respond to all calls. It is economical and practical, with low operating costs. It does not consume call charges and is easy to use; especially in dealing with emergencies or dispatching and commanding, its role cannot be replaced by other communication tools. [0003] At present, most of the existing vehicle-mounted walkie-talkies generally use an external regulated power supply due to their slightly larger volume, which makes it difficult to move. For convenience, the microphone and transmitting switch are usuall...

AI Technical Summary

Problems solved by technology

Mobile microphones can be connected wirelessly or wired. At present, the mobile microphones in the market do not have speakers at all. Due to the distance between the mobile microphone and the car walkie-talkie, or the installation requirements of the car walkie-talkie, the receiver on the car walkie-talkie cannot be effective. To play the sound effect, the user sometimes cannot listen to the audio signal received by the car walkie-talkie, which brings great inconvenience to the user

Images