A walkie-talkie audio signal relay system

Abstract

The invention belongs to the technical field of digital communication, and discloses an intercom audio signal relay system, comprising: an intercom communication terminal for receiving voice signals in different frequency bands, and transmitting the voice signals to an automatic gain control module; an automatic gain control module, The voice signal is amplified to an inherent power, and sent to the voice recognition module; the voice recognition module filters the voice signal to generate an effective voice signal, and automatically generates a trigger signal and sends it to the voice packet processing module; the voice packet processing module, according to the trigger The signal selects the corresponding intercom communication terminal, and forwards the effective voice signal through the corresponding intercom communication terminal to realize the relay of the audio signal. The invention not only realizes the relay function of the walkie-talkie in the same frequency band, but also realizes the relay function of the walkie-talkie in different frequency bands and different formats; it also realizes the communication function between the walkie-talkie and different communication terminals, and can realize remote intercom and command functions, improving the practical value of the product.

Description

technical field [0001] The invention belongs to the technical field of digital communication, and relates to an audio signal relay system of a walkie-talkie. Background technique [0002] The walkie-talkie relay system is generally used as a device to increase the communication distance of the walkie-talkie, usually using radio frequency relay, which can effectively increase the communication distance of the walkie-talkie in the same frequency band. The traditional walkie-talkie repeater station is a high-sensitivity receiver that is responsible for receiving the signals of each radio station at one frequency point (frequency), and at the same time transmits them at another frequency by a high-power transmitter, that is, the transceiver works at different frequencies. Differential transfer mode, so as to achieve the effect of increasing the communication distance. However, the traditional walkie-talkie repeater station can only realize the relay function of the walkie-talki...

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Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to solve the problem that the relay system in the prior art can only realize the signal relay function between the walkie-talkies of the same frequency and the same frequency band, and provide a walkie-talkie audio signal relay system, which can not only realize the same Frequency, the signal relay function between intercoms in the same frequency band, can also realize the direct relay communication function between intercoms in different frequency bands and different standards, and even realize the intercom communication between the intercom and other intercom communication terminals (such as mobile phones, telephones, etc.) Intercom communication function, so as to realize remote communication and command functions, expand the scope of use of the product, and also improve the flexibility of product use

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